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

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

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Author(s): J.-H. Tsai¹ ; H. Xiao¹ ; J.-H. Cheng² ; R.-A. Chang¹
- Affiliations: 1: Department of Electrical Engineering , National Taiwan Normal University , Taipei 10610 , Taiwan ;
  2: Graduate Institute of Communication Engineering, National Taiwan University , Taipei 10617 , Taiwan
Source: Volume 54, Issue 3, 08 February 2018, p. 130 – 132
DOI: 10.1049/el.2017.4120 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 04/11/2017, Published 19/12/2017

An ultra-low-LO (local oscillator)-power X-band down-conversion ring mixer in 0.18-μm 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 (OP_{1 dB}) is −14 dBm.

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

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