СПИСОК патентов США - подгруппа МПК16 H04B1/30


Выделить слова в названиях патентов:


№ п/п Номер патента Название патента

2017

19608569Linearizing scheme for baseband filter with active feedback
29595991Low power radio receiver
39577689Apparatus and methods for wide bandwidth analog-to-digital conversion of quadrature receive signals
49543997System and method for a mixer

2016

59509355Calibration of quadrature imbalance via loopback phase shifts
69509354Homodyne receiver with improved linearity
79496840Radio receiver
89491646Measuring device and a method for measuring a signal with several component signals
99491013Device and method for removing direct current offset using randomized control pulse
109490858Transmitter capable of reducing local oscillation leakage and in-phase/quadrature-phase (I/Q) mismatch and adjusting methods thereof
119450629Systems and methods for controlling local oscillator feed-through
129444666Device for generating a vector-modulated output signal and method for generating a vector-modulated output signal
139431962Coefficient estimation for digital IQ calibration
149413407Conversion system
159401732Receiver and receiving method of receiver
169391578Low intermediate frequency receiver
179385822Wideband calibration method and wideband calibration apparatus for calibrating mismatch between first signal path and second signal path of transmitter/receiver
189385688Filter auto-calibration using multi-clock generator
199374197Methods and arrangements for direct current estimation of a wireless communication packet
209374121Transceiver with super-heterodyne and zero intermediate frequency (ZIF) topologies
219356810Semiconductor integrated circuit and operating method thereof
229344130Leakage calibration for a frequency converter
239337965Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment
249325358Method for reducing second order distortion in harmonic rejection mixer
259319084Noise cancellation apparatus and method
269300336Direct conversion receiver device with first and second stages and related methods
279294178Method and apparatus for transceiving for beam forming in wireless communication system
289288586Method and apparatus for signal reception using dynamically selectable modes
299270316Radio frequency front-end based on high-intermediate frequency superheterodyne and zero intermediate frequency structure
309270301Method and arrangement for transmitting and receiving RF signals through various radio interfaces of communication systems
319264080Reducing second order distortion in an amplifier
329262653Reader for data interchange with a mobile data memory
339246722Device for providing a differential output signal and method for providing a differential output signal
349246719High dynamic range radio architecture with enhanced image rejection
359246529Photonic RF down-converter based on optomechanical oscillation
369246436Low power radio receiver
379240892Method and apparatus for reduction of communications media energy consumption
389240816Timing synchronization system and method of super regenerative receiver based on ultra low power communication
399231637Adaptive DC offset cancellation for direct conversion RF receivers

2015

409225565Device for generating a vector-modulated output signal and method for generating a vector-modulated output signal
419219512Integrated receiver and integrated circuit having integrated inductors and method therefor
429219459Receiving device and remote control system
439197279Estimation and reduction of second order distortion in real time
449191048Quadrature impulse noise remover
459176234Systems and methods for managing power consumption
469172416Simplified high frequency tuner and tuning method
479166643Method for correcting receiver in TDD system and devices associated therewith
489166632Mixer circuits with programmable characteristics
499160588Radio receiver and frequency correcting method therefor
509160390Method and system for impairment shifting
519148184Power detection circuit and power detection method
529136893Receiver
539124467Receiver gain adjustment to reducing an influence of a DC offset
549124346Switching gates mixer
559124345If process engine and receiver having the same and method for removing if carriers used therein
569118439Receiver for imbalanced carriers
579118285Compensation of a transmitter distortion
589106502Apparatus, system and method of in-phase/quadrature (I/Q) imbalance compensation
599100243Dynamic Low-IF frequency for interference mitigation
609100094System and method for tuning a serial link
619083390Method and apparatus for mixed-mode spectrum communication
629065537Method and system for calibrating a multi-mode, multi-standard transmitter and receiver
639059879Test signal generation and application in receivers
649053474Systems and methods for handling point-of-sale transactions using a mobile device

2014

658874061Filtering apparatus and method for dual-band sensing circuit
668750346Method for integrating signals transmitted from a transmitter to at least one ultra wide band (UWB) receiver as well as device for the implementation of the method

2013

678452250DC offset compensation method and DC offset compensation device
688417206Methods and systems for blending between stereo and mono in a FM receiver
698416886Receiver

2011

707953184Direct sampling type wireless receiver and method using the same
717885632Automated noise measurement system

2010

727792215Direct-conversion receiver and sub-harmonic frequency mixer thereof
737668527Multi-function passive frequency mixer

2009

747634247Method of sampling an analogue radiofrequency signal
757603099Direct-conversion receiver system and method with quadrature balancing and DC offset removal
767567790Receiving device and integrated circuit for reception
777486131Quadrature demodulator and interrogator

2008

787433346Card device for high-speed wireless data communication
797415248Multiband radio antenna with a flat parasitic element
807356320Apparatus and method for removing DC offset in a frequency direct-conversion device

2007

817308246Emergency notification system and emergency notification device
8272926493G radio
837218685Direct conversion receiver

2006

847133657Channel calibrator for use with a quadrature mixing receiver and a method of operation thereof
857072424Adaptive direct conversion receiver
867054610Wireless terminal device
877047049Radio communications device including at least one light source
887027793Direct conversion with variable amplitude LO signals

2005

896968172DC offset cancel circuit
906963735Method and arrangement for receiving a frequency modulated signal
916957057Switched capacitor mixer circuit to attain high gain and linearity in radio frequency receivers
926957046System and method for reducing multipath interference in packetized wireless communication systems
936954628Radio receiver
946954626High frequency receiving device
956950641Apparatus, and an associated method, for increasing receiver sensitivity of a direct conversion receiver
966946989Transponder, including transponder system
976944436Direct conversion transceiver capable of reducing DC offset using multichip module
986941121Method for calibrating a DC offset cancellation level for direct conversion receivers
996937195Inverted-F ferroelectric antenna
1006931241Dual digital low IF complex receiver
1016927644Low-loss tunable ferro-electric device and method of characterization
1026922554Method for implementing a transceiver and a transceiver
1036914950Multi-protocol receiver
1046909882Signal processing semiconductor integrated circuit device and wireless communication system
1056909344Band switchable filter
1066907236Mixer for dual conversion receiver
1076907235Apparatus and method for canceling DC offset in communications signals
1086904101Tuneless narrow-band super-regenerative receiver
1096903606DC offset correction using unused LNA
1106891440Quadrature oscillator with phase error correction
1116885852Method and apparatus in a wireless communication device for mitigating a received power overload
1126885341Inverted-F ferroelectric antenna
1136885263Tunable ferro-electric filter
1146882834Direct conversion receiver apparatus
1156873838Superregenerative oscillator RF receiver with differential output
1166871055Direct conversion receiver, mobile radio equipment using the same, and RF signal receiving method
1176862439Offset compensation in a direct-conversion receiver
1186862313Direct conversion spread spectrum time division duplex radio
1196859104Tunable power amplifier matching circuit
1206856790Receiver with dual D.C. noise cancellation circuits
1216850742Direct conversion receiver

2004

1226826388Mobile communication apparatus including dividers in transmitter and receiver
1236823181Universal platform for software defined radio
1246816718DC offset correction using dummy amplifier
1256816712Radio apparatus
1266816006Method of adjusting the cutoff frequency of an electronic filtering system, and corresponding system
1276810307Thermostat having a temperature stabilized superregenerative RF receiver
1286788747Receiver capable of receiving analog broadcast and digital broadcast and IC for the same
1296785529System and method for I-Q mismatch compensation in a low IF or zero IF receiver
1306784727Fast-settling DC offset removal circuits with continuous cutoff frequency switching
1316782249Quadrature signal generation in an integrated direct conversion radio receiver
1326775530Direct conversion of narrow-band RF signals
1336771945Dynamic DC balancing of a direct conversion receiver and method
1346760577Alignment methods and apparatus for I/Q phase and amplitude error correction and image rejection improvement
1356760568Circuit and method for reducing local oscillator frequency transmission in a radio transceiver
1366757340Radio receiver and method for preloading an average DC-offset into a channel filter
1376748203Three port structure with modulated LO signal
1386748200Automatic gain control system and method for a ZIF architecture
1396745020Direct downconversion receiver
1406744327Tunable voltage controlled oscillator
1416735425Telephone with a demodulator circuit with an improved local oscillator
1426735422Calibrated DC compensation system for a wireless communication device configured in a zero intermediate frequency architecture
1436735261Calibration of a N-port receiver
1446727786Band switchable filter
1456725023Radio FM receiver
1466714602Demodulator and receiver
1476711397Structures and methods for direct conversion from radio frequency modulated signals to baseband signals
1486707858Low IF receiver
1496697611Method and apparatus for performing DC offset cancellation in a receiver
1506697438Circuit configuration for a multistandard communications terminal
1516690735Broad band digital radio receiver for multicarrier signal
1526690251Tunable ferro-electric filter
1536690225DC offset cancel circuit
1546690176Low-loss tunable ferro-electric device and method of characterization
1556674998System and method for detecting and correcting phase error between differential signals

2003

1566668164Method and apparatus for reducing intermodulation distortion in a low current drain automatic gain control system
1576658237Multi-Band transceiver utilizing direct conversion receiver
1586658070Direct conversion receiver and method of compensating interference signals generated during processing
1596654596Homodyne radio receiver having DC compensation
1606654593Combined discrete automatic gain control (AGC) and DC estimation
1616653411Anti-reflective coating compositions comprising polymerized aminoplasts
1626650178N-port direct receiver
1636639909Receiver having functions for cancelling DC offset and measuring carrier detection threshold value, and control method thereof
1646631256Simplified high frequency tuner and tuning method
1656631170Radio frequency receiver
1666625424Autocalibration of a transceiver through nulling of a DC-voltage in a receiver and injecting of DC-signals in a transmitter
1676614403Radiation synthesizer receive and transmit systems
1686608999Communication signal receiver and an operating method therefor
1696606484Distortion correction circuit for direct conversion receiver
1706600913Two-port demodulation device
1716600911Even harmonic direct-conversion receiver, and a transmitting and receiving apparatus using the same
1726597748Method and apparatus for receiving a signal
1736577855Low IF receiver
1746573864Receiver
1756560448DC compensation system for a wireless communication device configured in a zero intermediate frequency architecture
1766560447DC offset correction scheme for wireless receivers
1776549763Receiving apparatus and method
1786545516Frequency conversion
1796539215Down converter and demodulator using a three port junction
1806539066Integrable radio receiver circuit for frequency-modulated digital signals
1816535725Interference reduction for direct conversion receivers
1826516183Method and apparatus for disturbance compensation of a direct conversion receiver in a full duplex transceiver
1836512472Method and apparatus for optimizing dynamic range of a wideband analog-to-digital converter
1846510313Wireless communication device
1856509777Method and apparatus for reducing DC offset
1866507733Three port junction receiver
1876504885System and method for modeling mixed signal RF circuits in a digital signal environment

2002

1886498929Receiver having DC offset decreasing function and communication system using the same
1896459889DC offset correction loop for radio receiver
1906449471Wireless terminal device
1916445726Direct conversion radio receiver using combined down-converting and energy spreading mixing signal
1926442383Demodulator and digital wireless communication receiver
1936427068Simplified high frequency tuner and tuning method
1946424284Baseband receiver including dual port DAC
1956411646Direct conversion time division duplex radio, direct sequence spread spectrum cordless telephone
1966408035Simplified receiver for frequency shift keyed signals
1976377616Calibration of n-port receivers
1986370372Subharmonic mixer circuit and method
1996366765Receiver
2006366622Apparatus and method for wireless communications
2016363125Non-coherent six-port receiver
2026360087Direct conversion receiver
2036356748Spectrum control for direct conversion radio frequency reception
2046356747Intermediary low-frequency frequency-conversion radiofrequency reception
2056356746Direct converting receiver
2066339711Radio apparatus
2076337976Selective-calling radio receiver using direct conversion method
2086337888In-phase and quadrature signal regeneration
2096335656Direct conversion receivers and filters adapted for use therein

2001

2106334051Direct conversion receiver with wide band analog frequency conversion front end and digital demodulating and selecting back end
2116332083Apparatus and associated method, for operating on receive signals received at a receiver
2126324389Method and circuit arrangement for processing a received signal
2136321073Radiotelephone receiver and method with improved dynamic range and DC offset correction
2146317006Frequency synthesizer utilizing phase shifted control signals
2156308057Radio receiver having compensation for direct current offset
2166307897Radio receiving apparatus for receiving communication signals of different bandwidths
2176307896Instrumentation receiver for digitally modulated radio frequency signals
2186304751Circuits, systems and methods for digital correction of phase and magnitude errors in image reject mixers
2196282414Wireless selective call receiving apparatus which can reduce current consumption and wireless selective call receiving method
2206275540Selective call receiver having an apparatus for modifying an analog signal to a digital signal and method therefor
2216271737Communication device with feedback for cancellation of perturbations
2226246866Dual band receiver
2236236690Direct-conversion receiver for digital-modulation signal
2246233444Radio receiving method and radio receiving apparatus
2256233431Radio page receiver with automatic cyclical turn on
2266192225Direct conversion receiver
2276188880Apparatus and method for reducing low-frequency distortion in frequency converted signals
2286181754System and method for modeling mixed signal RF circuits in a digital signal environment
2296175726Receiver architecture for the receiving of angle-modulated/angle-keyed carrier signals

2000

2306151369Digital broadcast receiver
2316150891PLL synthesizer having phase shifted control signals
2326144243Method and circuit arrangement for reducing offset voltage of a signal
2336134429Direct digital down conversion of a 10.8 MHz intermediate frequency signal in the personal handy phone system
2346134425Digital module RF section
2356122487Communication unit
2366118828Digital super-regenerative detector RF receiver
2376118810Multi-channel base station/terminal design covering complete system frequency range
2386115593Elimination of D.C. offset and spurious AM suppression in a direct conversion receiver
2396115584Transmitter-receiver for use in broadband wireless access communications systems
2406115432High-frequency signal receiving apparatus
2416112069Radio receiver and method for suppressing attenuation properties of a low frequency signal
2426104764Radio receiving apparatus for receiving communication signals of different bandwidths
2436101226Radio receiving apparatus for receiving communication signals of different bandwidths
2446088581Method and apparatus for reducing amplitude modulated interference in a receiver
2456085075Communication system, a communication device and a frequency synthesizer
2466081697Multi-carrier radio system and radio transceiver implementation
2476073002Mixer circuit and communication device using the same
2486073000Direct conversion receiving circuit and direct conversion receiver
2496072997Frequency discriminator for a direct conversion receiver
2506052024Monolithic, low-noise, synchronous direct detection receiver for passive microwave/millimeter-wave radiometric imaging systems
2516035186Integrated receiver
2526035002Digital super-regenerative detector RF receiver
2536034990Digital radio transmission and reception system applying a direct modulation and demodulation method
2546032054Vehicle telecommunication apparatus with RF antenna switching arrangement
2556029058Spectrum control for direct conversion radio frequency reception
2566026129Radio receiving apparatus for receiving communication signals of different bandwidths
2576023614Method for decoding a suppressed-carrier modulated signal in the presence of a pilot tone, particularly for FM signals
2586021323Direct conversion receiver with reduced even order distortion
2596021164Digital radio communication system having reduced phase-locked loop, and its synchronization
2606020839Analog technique to detect asymmetric radio frequency pulses
2616016422Method of and apparatus for generating radio frequency quadrature LO signals for direct conversion transceivers

1999

2626009126Zero-IF receiver
2636006081Communications receivers
2646006079Radio having a fast adapting direct conversion receiver
2655999574Digital filter system, carrier reproduction circuit using the digital filter system, and demodulation circuit using the carrier reproduction circuit
2665983081Method for generating frequencies in a direct conversion transceiver of a dual band radio communication system, a direct conversion transceiver of a dual band radio communication system and the use of this method and apparatus in a mobile station
2675982823Direct frequency selection and down-conversion for digital receivers
2685970046Apparatus for demodulating AM data multiplexed modulated wave signal
2695963856Wireless receiver including tunable RF bandpass filter
2705955783High frequency signal processing chip having signal pins distributed to minimize signal interference
2715953643Receiver circuit
2725949830Small wireless radio
2735946609Reduced-radiation radio signal receivers
2745937341Simplified high frequency tuner and tuning method
2755924024Method and circuit for achieving frequency conversion
2765918169Homodyne cellular base station
2775918167Quadrature downconverter local oscillator leakage canceller
2785909644AM radio receiver
2795907799Process for operating at least one receiver of radio signals, placed in the vicinity of a radiating facility or apparatus
2805901344Method and apparatus for improved zero intermediate frequency receiver latency
2815896306Group delay correction method and apparatus
2825896061Homodyne receiver and process for correcting the converted received signal
2835893029Baseband phase-locked direct conversion receiver with frequency offset
2845883548Demodulation system and method for recovering a signal of interest from an undersampled, modulated carrier
2855872538Frequency domain correction of I/Q imbalance
2865870669Radio receiver
2875864586Radio apparatus with offset compensating circuit

1998

2885852784Multiband mobile unit communication apparatus
2895850598Homodyne receiver and process for direct conversion
2905848355Frequency synthesizer correction using a temperature responsive divisor control
2915838799Digital sound broadcasting using a dedicated control channel
2925828955Near direct conversion receiver and method for equalizing amplitude and phase therein
2935826180Near homodyne radio frequency receiver
2945822704Mobile radio unit for use in dual-mode cellular communications system
2955822688Method for enhancing the reception sensitivity in homodyne recievers
2965822366Transceiver and method for generating and processing complex I/Q-signals
2975819157Reduced power tuner chip with integrated voltage regulator for a satellite receiver system
2985815113Monolithic, low-noise, synchronous direct detection receiver for passive microwave/millimeter-wave radiometric imaging systems
2995812942Balanced differential radio receiver and method of operation
3005793817DC offset reduction in a transmitter
3015793800Method and apparatus for minimizing phase error in a transmitter section of a transceiver
3025790817Configurable digital wireless and wired communications system architecture for implementing baseband functionality
3035764704DSP implementation of a cellular base station receiver
3045764700Digital radio link system and radio link terminal
3055761615Wide band zero if quadrature demodulator using a intermediate frequency and a single local oscillator
3065758296Mobile telephone receiver with adaptively inserted if filters and an if filter inserting method
3075757794Digital down converter and method
3085754601Jitter circuit for reduced switching noise
3095751197Low-power, self-quenching superregenerative detector
3105749051Compensation for second order intermodulation in a homodyne receiver
3115745531Automatic gain control apparatus, communication system, and automatic gain control method
3125742902Super-regenerative circuit apparatus for a door operator receiver and door operator incorporating the same
3135724653Radio receiver with DC offset correction circuit
3145715530Method for reducing spurious reception locations in homodyne receivers with time-variant carrier frequency
3155710998Method and apparatus for improved zero intermediate frequency receiver latency
3165710997Superheterodyne receiver apparatus

1997

3175697088Balun transformer
3185696437Intelligent low battery detection circuit for a paging receiver
3195678223Method and apparatus for an automatic frequency control receiver
3205663988Method and circuit arrangement for offset correction in a TDMA radio receiver
3215661485Homodyne receiver apparatus and method
3225633815Formatter
3235630228Double balanced mixer circuit with active filter load for a portable comunication receiver
3245630216Micropower RF transponder with superregenerative receiver and RF receiver with sampling mixer
3255619536Digital superheterodyne receiver and baseband filter method used therein
3265617451Direct-conversion receiver for digital-modulation signal with signal strength detection
3275617344Fixed coefficient high decimation filter
3285613233Apparatus with distortion cancelling feedback signal
3295606737Oscillator mixer and a multiplier mixer for outputting a baseband signal based upon an input and output signal
3305606731Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator
3315604929System for correcting quadrature gain and phase errors in a direct conversion single sideband receiver independent of the character of the modulated signal
3325604927Receiver having an adjustable bandwidth filter
3335604746Digital data receiver
3345603111Synchronous tracking AM receiver

1996

3355590413Radio transceiver having shared modulation and demodulation mixer circuits
3365584068Direct conversion receiver
3375584066Correcting circuit for mixing circuit receiver using same and frequency spectrum inverting circuit using same
3385579347Digitally compensated direct conversion receiver
3395570392Phase generator
3405555452Peak and valley signal measuring circuit using single digital-to-analog converter
3415533064Digital radio receiver having limiter amplifiers and logarithmic detector
3425530929Homodyne receiver minimizing oscillator leakage
3435509030RF receiver AGC incorporating time domain equalizer circuity
3445507036Apparatus with distortion cancelling feed forward signal
3455493581Digital down converter and method
3465483695Intermediate frequency FM receiver using analog oversampling to increase signal bandwidth

1995

3475471665Differential DC offset compensation circuit
3485465407Gain controller for a digital mobile radio receiver
3495446770Time division duplex transceiver
3505440586Receiver having reduced influence of oscillator radiation and parasitic crosstalk effects on gain control
3515438692Direct conversion receiver
3525428836Radio receiver for forming a baseband signal of time-varying frequencies
3535422889Offset correction circuit

1994

3545375255Radio receiver comprising analog dynamic compression and digital expansion
3555375146Digital frequency conversion and tuning scheme for microwave radio receivers and transmitters
3565371902Method and apparatus for recovering baseband signals from in-phase and quadrature-phase signal components having phase error therebetween
3575361408Direct conversion receiver especially suitable for frequency shift keying (FSK) modulated signals
3585355524Integrated radio receiver/transmitter structure
3595341431AM stereo detection and audio processing apparatus
3605339040AM demodulation receiver using digital signal processor
3615321852Circuit and method for converting a radio frequency signal into a baseband signal
3625309482Receiver having an adjustable matched filter
3635307378Digital radio communication apparatus
3645305086Two step demodulation synchronous detector
3655303417Mixer for direct conversion receiver
3665301364Method and apparatus for digital automatic gain control in a receiver
3675293408FSK data receiving system

1993

3685263197Dual port oscillator for two-stage direct conversion receiver
3695263196Method and apparatus for compensation of imbalance in zero-if downconverters
3705263195Superheterodyne radio receiver with digital automatic frequency control for a local oscillator
3715263194Zero if radio receiver for intermittent operation
3725241702D.C. offset compensation in a radio receiver
3735233632Communication system receiver apparatus and method for fast carrier acquisition
3745230099System for controlling phase and gain errors in an I/Q direct conversion receiver
3755212827Zero intermediate frequency noise blanker
3765212826Apparatus and method of DC offset correction for a receiver
3775212825Synthetic heterodyne demodulator circuit
3785204977Apparatus and method of automatic gain control in a receiver
3795179730Selectivity system for a direct conversion receiver
3805179728Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers

1992

3815146613Low power UHF data transceiver
3825142695Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength
3835140703Modulation distortion analyzer
3845109531Sideband receiver with pilot lock
3855095536Direct conversion receiver with tri-phase architecture

1991

3865065107Phase-locked loop bandwidth switching demodulator for suppressed carrier signals
3875008939AM noise reducing
3885003621Direct conversion FM receiver

1990

3894980687Digital demodulator
3904979230Up-conversion homodyne receiver for cable television converter with frequency offset to avoid adjacent channel interference
3914953182Gain and phase correction in a dual branch receiver
3924944025Direct conversion FM receiver with offset
3934912773Communications system utilizing a pilot signal and a modulated signal
3944905087UHF FM receiver having improved frequency stability and low RFI emission
3954903331Quadrature detection receiver with separate amplitude and phase control

1989

3964852123Nearly DC IF phase locked transceiver
3974814715Mixer arrangement for suppression of oscillator interference in quadrature demodulators

1988

3984742566AM receiver
3994736390Zero IF radio receiver apparatus
4004718113Zero-IF receiver wih feedback loop for suppressing interfering signals

1987

4014641368Radio frequency receiver

1986

4024633315Receiver for RF-signals comprising a pair of parallel signal paths
4034631499Phase-locked loop for a directly mixing synchronous AM-receiver
4044625331Automatic frequency control system or an SSB receiver

1985

4054535286Radio frequency receiver

1984

4064485487Method of, and a receiver for, demodulating a double sideband amplitude modulated signal in a quasi-synchronous area coverage scheme utilizing sideband diversity
4074464770Synchronous radio or television receiver with analog high frequency section followed by digital low frequency section

1983

4084408351Directly mixing receiving system
4094403348Single sideband receiver with intersyllabic gain correction limit control

1982

4104363139Radio frequency receiver
4114352210Linear mixer with reduced spurious responses
4124328590Single sideband receiver
4134313211Single sideband receiver with pilot-based feed forward correction for motion-induced distortion

1981

4144292594Method and apparatus for carrier regeneration and synchronous amplitude demodulation

1980

4154241452Automatic frequency control system
4164228546AM Radio receiver
4174206410Automatic frequency control system for single sideband signal receiver
4184193035Circuit arrangement for receiving one of the sidebands from a double sideband signal

1978

4194123712Symmetrical polyphase network
4204100376Pilot tone demodulator

1977

4214013964Automatic gain control means for a single sideband radio receiver

1976

4223984835Homodyne communication system
4233973203Carrier isolation system
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017