Broadband monolithic passive baluns and monolithic double-balanced mixer

Author

Chen, T.H. ; Chang, K.W. ; Wang, H. ; Dow, G.S. ; Liu, L.C.T. ; Bui, S.B.T. ; Lin, T.S.

Author_Institution

TRW, Redondo Beach, CA, USA

fYear

1991

fDate

10-14 July 1991

Firstpage

861

Abstract

The authors present the design and fabrication of four broadband monolithic passive baluns including CPW (coplanar waveguide) Marchand, multilayer MS Marchand, planar-transformer, and broadside-coupled line baluns. Operational frequencies range from 1.5 GHz to 24 GHz. Maximum relative bandwidths in excess of 3:1 are achieved. Simulated performances using full wave electromagnetic analysis are in good agreement with the measured results. The design of a monolithic double-balanced diode mixer using two planar-transformer baluns is also presented. Without DC bias, the mixer shows a minimum conversion loss of 6 dB with the RF at 5 GHz and a LO (local oscillator) drive of 15 dBm at 4 GHz. The measured input IP/sub 3/ (third-order intercept point) of this mixer is better than 15 dBm over the 4 to 5.75 GHz frequency band.<>

Keywords

MMIC; mixers (circuits); waveguide components; 1.5 to 24 GHz; 4 to 5.75 GHz; 6 dB; LO drive; broadband monolithic passive baluns; broadside-coupled line baluns; coplanar waveguide baluns; full wave electromagnetic analysis; minimum conversion loss; monolithic double-balanced mixer; multilayer MS Marchand; operational frequency; planar-transformer baluns; relative bandwidths; third-order intercept point; Analytical models; Bandwidth; Coplanar waveguides; Electromagnetic waveguides; Frequency; Impedance matching; Mixers; Nonhomogeneous media; Optical device fabrication; Planar waveguides;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1991., IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-87942-591-1

Type

conf

DOI

10.1109/MWSYM.1991.147143

Filename

147143