A 26–38 GHz Monolithic Doubly Balanced Mixer

Author

Lin, Che-Hung ; Lin, Chih-Ming ; Lai, Yu-Ann ; Wang, Yeong-Her

Author_Institution

Dept. of Electr. Eng., Nat. Cheng-Kung Univ., Tainan

Volume

18

Issue

9

fYear

2008

Firstpage

623

Lastpage

625

Abstract

A novel configuration of doubly balanced mixer is presented for operating over the 26-38 GHz band. The monolithic microwave integrated circuit (MMIC) was implemented by GaAs 0.15 mum pHEMT technology with the compact size of 1times2.5 mm². A 180deg hybrid circuit and two identical Marchand baluns were employed to achieve good port-to-port isolation. They also have wide band performance, make the mixer more compact, and simplify IF extraction. This mixer has a conversion loss of better than 6 dB, a dc-10 GHz IF bandwidth, and the LO-to-RF and LO-to-IF isolations are better than 20 dB and 29 dB, respectively.

Keywords

HEMT integrated circuits; III-V semiconductors; MMIC; baluns; gallium arsenide; mixers (circuits); GaAs; Marchand baluns; frequency 26 GHz to 38 GHz; monolithic doubly balanced mixer; monolithic microwave integrated circuit; pHEMT; size 0.15 mum; Gallium arsenide; Impedance matching; Integrated circuit technology; Isolation technology; MMICs; Microwave integrated circuits; Microwave technology; Monolithic integrated circuits; PHEMTs; Wideband; Doubly balanced mixer (DBM); Marchand balun; monolithic microwave integrated circuit (MMIC); pHEMT;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2008.2002465

Filename

4624627