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Digital system for image rejection of low-intermediate-frequency receiver and implementation method thereof
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Digital to analog converter
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Frequency dividing method and frequency dividing device
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Transmitter local oscillator leakage reduction system
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Automatic gain control circuit
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Buck direct-current converter
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Passive frequency mixer and control method thereof
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Double-second-order active RC filter circuit and compensation method thereof
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LDO (low dropout regulator) quick starting circuit
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Transmitter gain distribution method and circuit
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Radio-frequency signal amplification circuit
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Orthogonal mismatch calibration method and device of direct frequency conversion transmitter
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Gain-device switching-on/off adjusting method and device in automatic gain control system
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Tuning circuit and tuning method of on-chip filter
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Phase-locked loop and circuit and method of closed loop frequency self-calibration of phase-locked loop
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Radio frequency transmitter, gain compensation circuit and method
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Circuit for stabilizing phase-locked loop characteristics
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Beidou satellite and GPS (global positioning system) double-passage radio frequency receiving machine
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Chip pin multiplex circuit
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Phase-locked loop frequency synthesizer
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