Broadband sub-harmonic mixer with a compact band pass filter

Shih Han Hung, Kai Wen Cheng, Yeong Her Wang

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

7 Citations (Scopus)

Abstract

This paper presents a 28 GHz to 72 GHz isolation enhanced down-conversion broadband sub-harmonic mixer using the 0.15 μm GaAs pHEMT process with chip dimensions of 1.8 × 0.76 mm2. The configuration of the sub-harmonic mixer consists of one intermediate frequency (IF) amplifier, one compact band pass filter, and one Lange coupler utilizing an anti-parallel diode pair (APDP). To reduce line length and achieve broad operation bandwidth, the proposed grounded capacitor in the band pass filter can also enhance the local oscillation (LO)-radio frequency (RF) isolation of the sub-harmonic mixer. Both high conversion gain and isolation can be achieved between LO and RF-IF in the IF amplifier. The measured results indicate that the conversion gain of the mixer is 5.02 dB to 11.5 dB from RF frequency of 28 GHz to 72 GHz at the LO power of 9 dBm; the isolation of RF-IF, LO-IF, LO-RF, and 2LO-RF is 21 dB to 51.52 dB, 22.13 dB to 30.97 dB, 10.64 dB to 27.9 dB, and 48.9 dB to 72.35 dB, respectively.

Original languageEnglish
Title of host publication2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings
Pages208-210
Number of pages3
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 Asia-Pacific Microwave Conference, APMC 2012 - Kaohsiung, Taiwan
Duration: 2012 Dec 42012 Dec 7

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Other

Other2012 Asia-Pacific Microwave Conference, APMC 2012
CountryTaiwan
CityKaohsiung
Period12-12-0412-12-07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Broadband sub-harmonic mixer with a compact band pass filter'. Together they form a unique fingerprint.

  • Cite this

    Hung, S. H., Cheng, K. W., & Wang, Y. H. (2012). Broadband sub-harmonic mixer with a compact band pass filter. In 2012 Asia-Pacific Microwave Conference, APMC 2012 - Proceedings (pp. 208-210). [6421548] (Asia-Pacific Microwave Conference Proceedings, APMC). https://doi.org/10.1109/APMC.2012.6421548