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A 1.2 V 15–32 GHz low-power single-balanced gate mixer with a miniature rat-race hybrid

  • Chung-Chun Chen (a1), Chun-Hsien Lien (a2), Hen-Wai Tsao (a3) and Huei Wang (a4)


A 15–32 GHz miniature single-balanced gate mixer is proposed and analyzed. It achieves a smaller chip area with acceptable conversion gain and port-to-port isolation. In addition, the design procedure is described in detail. This mixer, fabricated in 90 nm digital CMOS technology, demonstrates a measured conversion loss of 1 dB and higher than 30 dB RF-to-LO port isolation from 17 to 32 GHz, at a local oscillator (LO) driver power of −4.3 dBm. The total dc power consumption is only 6 mW from a 1.2 V supply, including output buffer. The low dc power consumption and LO driver power reduce the power budget, and the proposed miniature rat-race hybrid facilitates integration in a receiver.


Corresponding author

Corresponding author: C.-C. Chen Email:


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[1]Maas, S.A.: Microwave Mixers, 2nd ed., Artech House, Norwood, MA, 1993.
[2]Razavi, B.: RF Microelectronics, Prentice Hall PTR, Upper Saddle River, NJ, 1998.
[3]Lee, T.H.: The Design of CMOS Radio-Frequency Integrated Circuits, 2nd ed., Cambridge University Press, New York, 2004.
[4]Kuo, C.C.; Kuo, C.L.; Kuo, C.J.; Maas, S.A.; Wang, H.: Novel miniature and broadband millimeter-wave monolithic star mixers. IEEE Trans. Microw. Theory Tech., 56 (4) (2008), 793802.
[5]Kuo, C.L.; Kuo, C.C.; Lien, C.H.; Tsai, J.H.; Wang, H.: A novel reduced-size rat-race broadside coupler and its application for CMOS distributed sub-harmonic mixer. IEEE Microw. Wirel. Compon. Lett., 18 (3) (2008), 194196.
[6]Yang, H.Y. et al. : Design and analysis of a 0.8–77.5 GHz ultra-broadband distributed drain mixer using 0.13 µm CMOS technology. IEEE Trans. Microw. Theory Tech., 57 (3) (2009), 562572.
[7]Chen, J.H.; Kuo, C.C.; Hsin, Y.M.; Wang, H.: A 15–50 GHz broadband resistive FET ring mixer using 0.18 µm CMOS technology, in IEEE MTT-S Int. Microwave Symp. Digest, Anaheim, May 2010, 784787.
[8]Ellinger, F.: 26.5–30 GHz resistive mixer in 90 nm VLSI SOI CMOS technology with high linearity for WLAN. IEEE Trans. Microw. Theory Tech., 53 (8) (2006), 25592565.
[9]Tseng, S.C.; Meng, C.; Chang, C.H.; Chang, S.H.; Huang, G.W.: A silicon monolithic phase-inverter rat-race coupler using spiral coplanar striplines and its application in a broadband Gilbert mixer. IEEE Trans. Microw. Theory Tech., 56 (8) (2008), 18791888.
[10]Lien, C.H.; Wang, C.H.; Lin, C.S.; Wu, P.S.; Lin, K.Y.; Wang, H.: Analysis and design of reduced-size Marchand rat-race hybrid for millimeter-wave compact balanced mixers in 130 nm CMOS process. IEEE Trans. Microw. Theory Tech., 57 (8) (2009), 19661977.
[11]Lien, C.H.; Wu, P.S.; Lin, K.Y.; Wang, H.: A 60 GHz single-balance gate-pumped down-conversion mixer with reduced-size rat-race hybrid on 130-nm CMOS process, In IEEE MTT-S Int. Microwave Symp. Digest, Atlanta, June 2008, 1481–1484.
[12]Lien, C.H.; Huang, P.C.; Kao, K.Y.; Lin, K.Y.; Wang, H.: 60 GHz double-balanced gate-pumped down-conversion mixers with a combined hybrid on 130 nm CMOS process. IEEE Microw. Wirel. Compon. Lett., 20 (3) (2010), 160162.
[13]Razavi, B.: A millimeter-wave CMOS heterodyne receiver with on-chip LO and divider. IEEE J. Solid-State Circuits, 43 (2) (2008), 477485.
[14]Lee, J.; Liu, M.; Wang, H.: A 75-GHz phase-locked loop in 90 nm CMOS technique. IEEE J. Solid-State Circuits, 43 (6) (2008), 14141426.
[15]Wu, C.R.; Hsieh, H.H.; Lu, L.H.: An ultra-wideband distributed active mixer MMIC in 0.18 µm CMOS technology. IEEE Trans. Microw. Theory Tech., 55 (4) (2007), 625632.
[16]Bao, M.; Jacobsson, H.; Aspemyr, L.; Carchon, G.; Xiao, S.: A 9–31 GHz subharmonic passive mixer in 90 nm CMOS Technology. IEEE J. Solid-State Circuits, 41 (10) (2006), 22572264.



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