A 20-31 GHz high image rejection ratio subharmonic mixer

Y. C. Lee; C. H. Liu; S. H. Hung; C. C. Su; Y. H. Wang

doi:10.2528/PIERC12011115

A 20-31 GHz high image rejection ratio subharmonic mixer

Y. C. Lee, C. H. Liu, S. H. Hung, C. C. Su, Y. H. Wang

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A broadband monolithic image rejection subharmonic mixer using a standard 0.18 μm CMOS technology is proposed. This circuit is composed of a band-pass filter with an intermediate frequency (IF) extraction function that can simplify the block diagram of the image rejection mixer. The entire passive circuit is constructed using a broadside coupling structure to achieve a high level of integration. Based on measured results, the proposed mixer exhibits conversion loss of 15.5-18.5 dB at a local oscillator (LO) power of 13 dBm, whereas the 3 dB bandwidth ranges from 20 to 31 GHz (43.1%) with a miniature chip dimension of 0.77 × 0.81 mm ². The LO-to-radio frequency (RF), 2LO-to-RF, and RF-to-IF isolation levels are higher than 22.5, 42.9, and 34.5 dB, respectively. The best image rejection ratio of 29 dBc with 20° phase compensation at 24.5 GHz can be achieved.

Original language	English
Pages (from-to)	197-207
Number of pages	11
Journal	Progress In Electromagnetics Research C
Volume	27
DOIs	https://doi.org/10.2528/PIERC12011115
Publication status	Published - 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials

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10.2528/PIERC12011115

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title = "A 20-31 GHz high image rejection ratio subharmonic mixer",

abstract = "A broadband monolithic image rejection subharmonic mixer using a standard 0.18 μm CMOS technology is proposed. This circuit is composed of a band-pass filter with an intermediate frequency (IF) extraction function that can simplify the block diagram of the image rejection mixer. The entire passive circuit is constructed using a broadside coupling structure to achieve a high level of integration. Based on measured results, the proposed mixer exhibits conversion loss of 15.5-18.5 dB at a local oscillator (LO) power of 13 dBm, whereas the 3 dB bandwidth ranges from 20 to 31 GHz (43.1%) with a miniature chip dimension of 0.77 × 0.81 mm 2. The LO-to-radio frequency (RF), 2LO-to-RF, and RF-to-IF isolation levels are higher than 22.5, 42.9, and 34.5 dB, respectively. The best image rejection ratio of 29 dBc with 20° phase compensation at 24.5 GHz can be achieved.",

author = "Lee, {Y. C.} and Liu, {C. H.} and Hung, {S. H.} and Su, {C. C.} and Wang, {Y. H.}",

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T1 - A 20-31 GHz high image rejection ratio subharmonic mixer

AU - Lee, Y. C.

AU - Liu, C. H.

AU - Hung, S. H.

AU - Su, C. C.

AU - Wang, Y. H.

PY - 2012

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