A CMOS BPSK transmitter with a monitoring demodulator embedded

Hung Chi Wang, Jyh Ching Juang, Chun Lin Lu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A binary phase shift keying (BPSK) transmitter with a monitoring demodulator embedded using standard 0.13-μm CMOS process is presented in this paper. Three differential switches, an RF multiplexer and a sub-harmonic VCO are applied in the circuit design. The differential switches offer the frequency-doubling function for VCO, the modulation function for the transmitter, and the demodulation function for the monitor. The measurement results show that the free-running frequency of the VCO of the chip is around 11 GHz and the doubled frequency is around 22 GHz. A continuous-wave signal is applied to test the transmitter function. The measured results show that the modulator bandwidth is wider than 6 GHz. The LO-to-RF isolation is better than 55 dB. The monitor circuit is tested to show that un-wanted signal will appear if the quality of the transmitted signal is poor. The implemented chip size is 1 × 1 mm2.

Original languageEnglish
Title of host publication2010 Asia-Pacific Microwave Conference Proceedings, APMC 2010
Number of pages4
Publication statusPublished - 2010
Event2010 Asia-Pacific Microwave Conference, APMC 2010 - Yokohama, Japan
Duration: 2010 Dec 72010 Dec 10

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Other2010 Asia-Pacific Microwave Conference, APMC 2010

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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