QPSK MODULATOR BASED ON INJECTION LOCKED RING VCO IN 250nm CMOS

Hemant Raghuwanshi, Shailendra Chouhan, Mr Sharma
unpublished
In proposed design, a Quadrature phase shift keying modulator is implemented using injection locking for the phase modulation based on ring voltage controlled oscillator. The proposed design reduces the area of fabrication and power consumption of VCO, by eliminating the blocks in the traditional QPSK modulator and by using injection locking. The proposed QPSK modulator is implemented and simulated in 0.25μm with an output frequency of 1.1GHz. The total power consumption of proposed design is
more » ... roposed design is 13.1mw using a 2.5 volt supply.
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