Title:
SINGLE-ENDED INPUT AND DOUBLE-BALANCED PASSIVE MIXER
Document Type and Number:
WIPO Patent Application WO/2016/145950
Kind Code:
A1
Abstract:
A single-ended input and double-balanced passive mixer comprises a Balun transconductance stage, a passive local oscillator switch and a trans-impedance amplifier; the Balun transconductance stage is a transconductance stage circuit outputting double-channel differential current by using single-channel bias current; the output impedance of the transconductance stage is lowered at the local oscillator frequency and a similar AC virtual earth is constructed by the transconductance stage by utilizing the impedance transfer effect of the passive local oscillator switch; when input voltage is changed, transconductance transistors respectively pull current from differential outputs, and a function of outputting the double-channel differential current by using the single-channel bias current is realized. The single-ended input and double-balanced passive mixer saves half of transconductance stage current, is a passive mixer with the same equivalent transconductance and significantly reduced power consumption, and is suitable for single-ended input and differential output.
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Inventors:
CHEN CHAO (CN)
WU JIANHUI (CN)
LI HONG (CN)
WU JIANHUI (CN)
LI HONG (CN)
Application Number:
PCT/CN2016/072686
Publication Date:
September 22, 2016
Filing Date:
January 29, 2016
Export Citation:
Assignee:
UNIV SOUTHEAST (CN)
International Classes:
H03D7/16
Foreign References:
| CN104702219A | 2015-06-10 | |||
| CN103078593A | 2013-05-01 | |||
| CN101777877A | 2010-07-14 | |||
| CN102412786A | 2012-04-11 | |||
| CN102163955A | 2011-08-24 | |||
| US20100148849A1 | 2010-06-17 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO.,LTD (CN)
南京经纬专利商标代理有限公司 (CN)
南京经纬专利商标代理有限公司 (CN)
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