DocumentCode
2107988
Title
A millimeter-wave wideband balanced amplifier using multilayer MMIC directional couplers
Author
Imaoka, Toshikaz ; Banba, Seiichi ; Imai, Nobuaki
Author_Institution
ATR Optical and Radio Communications Research Laboratories 2-2 Hikari-dai, Seika-cho, Souraku-gun, Kyoto 619-02, Japan. TEL.: +81-774-95-1511; FAX.: +81- 774-95-1508; E-mail: imaoka@atr-rd.atr.co.jp t
Volume
2
fYear
1995
fDate
4-4 Sept. 1995
Firstpage
1001
Lastpage
1005
Abstract
This paper describes a millimeter-wave wideband balanced amplifier using novel multilayer MMIC directional couplers. The 3 dB-couplers designed for a center frequency of 50 GHz show coupling losses of 3.9 dB ± 0.3 dB. The balanced amplifier fabricated in a 1.2 mm × 2.3 mm areas, shows a gain of 10-14 dB with input and output return losses of better than 14 dB from 34 to 52 GHz. The utilized directional couplers can be applied without degrading the circuit performance or increasing the circuit area. To our knowledge, this is the first millimeter-wave active circuit employing multilayer MMIC´s.
Keywords
Active circuits; Broadband amplifiers; Circuit optimization; Degradation; Directional couplers; Frequency; Gain; MMICs; Millimeter wave circuits; Nonhomogeneous media;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1995. 25th European
Conference_Location
Bologna, Italy
Type
conf
DOI
10.1109/EUMA.1995.337113
Filename
4137327
Link To Document