A MMIC Doubler Based on Novel Open/Short Stub Hybrids

Author

Lai, Yu-Ann ; Lin, Chih-Ming ; Su, Chun-Chi ; Chang, Chieh-Pin ; Wang, Yeong-Her

Author_Institution

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

Volume

19

Issue

4

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

242

Lastpage

244

Abstract

A new configuration of a balanced frequency PHEMT monolithic microwave integrated circuit doubler using open/short stub hybrids is proposed. With multi-coupled lines technology, the phase shifter is produced and applied to a Ka-band doubler successfully. As compared to the conventional lumped-element doubler, this phase shifter can make the doubler more compact in size and flexible in design. The doubler achieves an operation band width of 23 to 26 GHz with the best conversion loss of 7.4 dB at 25 GHz. In addition, the fundamental frequency suppression is better than 24.1 dB, and the chip dimension is as small as 0.85 times 1.1 mm².

Keywords

HEMT integrated circuits; MMIC; phase shifters; Ka-band doubler; MMIC doubler; PHEMT monolithic microwave integrated circuit doubler; bandwidth 23 GHz to 26 GHz; conventional lumped-element doubler; fundamental frequency suppression; loss 7.4 dB; multicoupled lines technology; open stub; phase shifter; short stub; Balanced doubler; PHEMT; coupled line; monolithic microwave integrated circuit (MMIC); phase shifter;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2009.2015510

Filename

4804620