A novel microstrip mixer using complex coupler and high-performance low-pass filter

Author

Yongle Wu ; Zixuan Ning ; Yuanan Liu

Author_Institution

Sch. of Electron. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

A novel microstrip mixer is proposed in this paper by using inherent complex impedance-matching coupler and highperformance low-pass filter. Based on accurate complex terminated impedances and analytical design method, the designed coupler can directly match the complex load impedances to the desired real source impedance 50 Ohm. Due to coupled-line circuit, the used low-pass filter has advantages of small size and wide up stop band. The designed mixer operates at 2 GHz. The measured conversion loss is about 8.5 dB when the 2-GHz 2-dBm Local Oscillator (LO) and 2.3-GHz-20-dBm Radio Frequency (RF) are inputted. This proposed mixer features compact size and high linearity performance.

Keywords

coupled circuits; low-pass filters; microstrip circuits; mixers (circuits); waveguide couplers; complex impedance-matching coupler; coupled-line circuit; frequency 2 GHz; high-performance low-pass filter; local oscillator; microstrip mixer; radiofrequency input; Couplers; Gain; Low-pass filters; Microstrip filters; Mixers; Power measurement; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6929330

Filename

6929330