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Quadrature modulation circuit

Pulse or digital communications – Repeaters – Testing
Patent

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Quadrature modulation circuit for use in a radio transmitter

Pulse or digital communications – Transmitters
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Quadrature modulation circuits and systems supporting...

Pulse or digital communications – Transmitters – Amplitude modulation
Reexamination Certificate

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Quadrature modulation transmitter

Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate

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Quadrature modulation with reduced phase-error distortion

Pulse or digital communications – Transmitters – Angle modulation
Reexamination Certificate

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Quadrature modulator

Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate

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Quadrature modulator

Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate

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Quadrature modulator and calibration method

Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate

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Quadrature modulator and demodulator

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

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Reexamination Certificate

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Quadrature modulator carrier quadrature error detection...

Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate

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Quadrature modulator for TDMA/TDD radio communication apparatus

Telecommunications – Transmitter and receiver at same station – With transmitter-receiver switching or interaction prevention
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Quadrature modulator having circuit for correcting phase error

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Quadrature modulator having compensation for local oscillator le

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Quadrature modulator having controlled phase shifter

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Quadrature modulator having phase shift and amplitude compensati

Modulators – Phase shift keying modulator or quadrature amplitude modulator – Including discrete semiconductor device
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Quadrature modulator imbalance estimator and modulator stage...

Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate

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Quadrature modulator malfunction estimator and modulator stage u

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Quadrature modulator operable in quasi-microwave band of digital

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Quadrature modulator with distortion compensation

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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