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.pi./4 differential encoding for digital cellular mobile systems

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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16 QAM modulator and method of 16 QAM modulation

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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90° phase generator

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Active 90-degree phase shifter with LC-type emitter...

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Adaptively self-correcting modulation system and method

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Amplitude and phase error normalization of subcarrier generator

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Amplitude imbalance compensation of quadrature modulator

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Apparatus and method for adjusting microwave BPSK modulator and

Modulators – Phase shift keying modulator or quadrature amplitude modulator – Including discrete semiconductor device
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Apparatus for correcting quadrature error in a modulator and/or

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Architecture for universal modulator

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

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Bi-phase modulator apparatus and method

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

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Bi-polar modulator

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Bias circuit for use in quadrature modulator

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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Binary phase shift key modulator with programmable level control

Modulators – Phase shift keying modulator or quadrature amplitude modulator – Including discrete semiconductor device
Patent

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Biphase modulaton circuit having continuous phase changes

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Biphase modulator and method without matching elements

Modulators – Phase shift keying modulator or quadrature amplitude modulator – Including discrete semiconductor device
Patent

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Biphase modulator with balun design

Modulators – Phase shift keying modulator or quadrature amplitude modulator
Patent

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Biphase shift keying modulation circuit having constant envelope

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

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CDMA modulation method and device therefor

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

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Circuit and method for compensating for non-linear distortion

Modulators – Phase shift keying modulator or quadrature amplitude modulator
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