LandOfFree - US Patents

Pulse or digital communications – Transmitters – Quadrature amplitude modulation

Quadrature modulator with integrated distributed RC filters

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Quadrature modulator with pulse-shaping

Modulators – Phase shift keying modulator or quadrature amplitude modulator – Including logic element

Quadrature modulator with set-and-forget carrier leakage...

Utility Patent

Pulse or digital communications – Spread spectrum – Direct sequence

Quadrature multi-frequency ranging (QMFR) applied to GPS...

Pulse or digital communications – Spread spectrum – Direct sequence

Quadrature multi-frequency ranging (QMFR) applied to GPS...

Pulse or digital communications – Repeaters – Testing

Quadrature multiplexed post correlation IF channel

Quadrature multiplying four-channel demodulator

Amplifiers – With semiconductor amplifying device – Including plural amplifier channels

Quadrature offset power amplifier

Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic

Quadrature optical phase modulators for lightwave systems

Oscillators – Plural oscillators

Quadrature oscillator

Oscillators – Plural oscillators

Quadrature oscillator and methods thereof

Telecommunications – Receiver or analog modulated signal frequency converter – Panoramic display

Quadrature oscillator and methods thereof

Oscillators – Ring oscillators

Quadrature oscillator having a variable frequency

Oscillators – Ring oscillators

Quadrature oscillator having amplitude control means based on a

Oscillators – Phase shift type

Quadrature oscillator network

Oscillators – Ring oscillators

Quadrature oscillator using inherent nonlinearities of impedance

Oscillators – Automatic frequency stabilization using a phase or frequency... – Afc with logic elements

Quadrature oscillator with phase error correction

Oscillators – Automatic frequency stabilization using a phase or frequency... – Particular frequency control means

Quadrature oscillator with simplified amplitude, phase and...

Amplifiers – With semiconductor amplifying device – Including differential amplifier

Quadrature output low noise transconductance amplifier...