Patents Represented by Attorney M. A. Lechter

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  • Stabilizing and calibration circuit for FM-CW radar ranging systems
    Patent number: 4008475
    Abstract: A frequency-modulated continuous wave (FM-CW) ranging system wherein continuous feedback to the FM oscillator of the system eliminates drift in frequency excursions of the FM waveform.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: February 15, 1977
    Assignee: RCA Corporation
    Inventor: Henry Charles Johnson
  • Dual mode automobile collision avoidance radar
    Patent number: 4003049
    Abstract: A frequency-modulated continuous-wave collision avoidance radar responsive to both reply signals from cooperating (tagged) targets and to skin reflections from proximate non-cooperating (non-tagged) targets.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: January 11, 1977
    Assignee: RCA Corporation
    Inventors: Fred Sterzer, Gerald Stanley Kaplan
  • Electronic license plate for motor vehicles
    Patent number: 4001822
    Abstract: An electronic license tag or plate formed into a unitary structure and including a single antenna system cooperating in a system comprising a harmonic radiator which transmits a pulse coded identification signal in response to an interrogation signal, and in a signal communication path for detecting and decoding code modulations in the interrogation signal and deriving therefrom an information signal which is communicated to the operator of a vehicle to which the tag or plate is affixed.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: January 4, 1977
    Assignee: RCA Corporation
    Inventor: Fred Sterzer
  • Transferred electron device pulse train generator
    Patent number: 4000415
    Abstract: A controlled interval pulse train generator comprising a plurality of three terminal transferred electron logic devices, and a delay line. The generator produces a train of small pulse-width voltage pulses at intervals determined by the delay line. The pulse train is started in response to an initial pulse and is terminated in response to a voltage step.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: December 28, 1976
    Assignee: RCA Corporation
    Inventor: Walter Richard Curtice
  • Linear amplifier utilizing adaptive biasing
    Patent number: 3996524
    Abstract: A linear amplifier for an amplitude modulated RF input signal wherein the DC output-port bias voltage is varied in accordance with the current into the DC output-port to prevent amplitude and phase distortion of the output signal. Amplifiers utilizing bipolar and field effect transistors are disclosed.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: December 7, 1976
    Assignee: RCA Corporation
    Inventor: Franco Nicola Sechi
  • Semipassive responder utilizing a low voltage, low power drain reflective varactor phase modulator
    Patent number: 3996587
    Abstract: A semipassive responder for use in a communication system wherein an interrogating unit transmits an interrogation signal to illuminate the responder. The responder generates, in response to incident interrogation signals, a phase-coded reply signal, utilizing a low voltage, low power-drain reflective varactor phase modulator.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: December 7, 1976
    Assignee: RCA Corporation
    Inventor: Jerome Rosen