Ultra-low-LO-power X-band down-conversion ring mixer using weak-inversion biasing technique

J. H. Tsai*, H. Xiao, J. H. Cheng, R. A. Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


An ultra-low-LO (local oscillator)-power X-band down-conversion ring mixer in 0.18-μ.m CMOS process is presented. By using the weak-inversion biasing technique, the proposed X-band ring mixer exhibits low-dc-power consumption and low-LO-drive power while maintaining a reasonable conversion gain (CG). The measurement results show that the proposed mixer demonstrates a maximum CG of 1.75 dB with ultra-low-LO-power of -8 dBm at RF of 12 GHz and IF of 100 MHz. The dc power is only 2 mW. The 3-dB RF bandwidth is from 9 to 15 GHz and the output 1-dB compression point (OP1 dB) is -14 dBm.

Original languageEnglish
Pages (from-to)130-132
Number of pages3
JournalElectronics Letters
Issue number3
Publication statusPublished - 2018 Feb 8

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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