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| Number | Title | Issue Date |
| 7349679 | Integrated power amplifier A power amplifier develops a modulated high power signal by summing the outputs of multiple voltage controlled oscillators. A phase control circuit synchronizes the phase relationship of multiple voltage controlled oscillators. The voltage control oscillators provid... | 03/25/2008 |
| 7248844 | Radio frequency integrated circuit electo-static discharge circuit The radio frequency integrated circuit (RFIC) electrostatic discharge (ESD) circuit includes an integrated circuit pin and a radio frequency (RF) ESD circuit. The integrated circuit pin provides coupling to an antenna. The RF ESD circuit is operably coupled to the i... | 07/24/2007 |
| 6904274 | System and method for inverting automatic gain control (AGC) and soft limiting A soft limiter for a signal processor includes a variable-gain amplifier, and a threshold detector. The variable-gain amplifier includes a signal input for receiving an input signal, a signal output for providing an output signal representative of the input signal, ... | 06/07/2005 |
| 6405030 | System for interception of digital cellular phone communication A system for interception of digital cellular phone communication which is required by Communication Assistance for Law Enforcement Agency CALEA. The system includes a plurality of wide area networks which control the transmission of voice, data, file and... | 06/11/2002 |
| 5375255 | Radio receiver comprising analog dynamic compression and digital expansion A radio receiver for an RF signal which is phase or frequency modulated by an information signal. The receiver has an analog receiving section which provides non-linear dynamic compression. The resulting analog signal is sampled and the samples are digiti... | 12/20/1994 |
| 4555671 | Circuit for driving a signal meter for a receiver A signal meter driving signal is derived from first and second active elements connected in parallel and controlled by opposite phase differential outputs from an IF amplifier. The active elements are biased with a bias voltage which differs by a predeter... | 11/26/1985 |
| 4495469 | Differential amplifier output leading circuit, and intermediate frequency amplifier using same A differential output leading circuit forming a part of an IF amplifier includes a pair of common collector connected transistors which receive, at control electrodes, outputs from a differential amplifier, by way of emitter follower circuits having const... | 01/22/1985 |
| 4442549 | Meter drive circuit A circuit and method for producing a signal the magnitude of which varies with the logarithm of an input signal supplied to a plurality of cascaded differential amplifier stages each having substantially equal gain. As particular ones of the stages go int... | 04/10/1984 |
| 4429416 | Multistage cascade/cascode limiting IF amplifier and meter circuit A plurality of differential amplifier stages in cascaded in a directly coupled configuration to provide substantial signal gain. The first few stages are cascode coupled to a plural input differential signal combiner which has a single differential output... | 01/31/1984 |
| 4397040 | UHF Receiver with decreased distortion due to multipath reception In a UHF receiver in which volume control is carried out as a function of received field strength, distortion due to multipath reception is prevented by use of a band-pass filter connected to the output terminal of the IF section which furnishes a signal ... | 08/02/1983 |
| 4100500 | Angle-modulation detector having push-pull input applied through high-pass filters A circuit adapted to detect an angle-modulated signal including a pair of terminals to which the angle-modulated signal is supplied in push-pull relation and a high-pass filter circuit coupled to the pair of terminals for transmitting those frequencies of... | 07/11/1978 |
