A monolithic even harmonic quadrature mixer using a balance type 90 degree phase shifter for direct conversion receivers

Author

Shimozawa, M. ; Kawakami, K. ; Ikematsu, H. ; Itoh, K. ; Kasai, N. ; Sota, Yasuhiro ; Ishida, O.

Author_Institution

Inf. Technol. R&D Center, Mitsubishi Electr. Corp., Kanagawa, Japan

Volume

1

fYear

1998

fDate

7-12 June 1998

Firstpage

175

Abstract

This paper proposes a novel circuit configuration of an even harmonic quadrature mixer (EHQMIX) for direct conversion receivers. In this EHQMIX, a 90 degree phase shifter consists of balance type high pass and low pass filters, and it does not require any circuits connecting to the ground plane. So this configuration is suitable for low cost monolithic IC implementation without any via-holes, because amplitude and phase imbalance, caused by the inductance included in the wires and leads of a package, can be reduced for circuits connected to the ground plane. A developed L-band MMIC achieves good quadrature detection characteristics.

Keywords

MMIC mixers; UHF integrated circuits; UHF mixers; UHF phase shifters; radio receivers; 1.4 to 1.7 GHz; L-band MMIC; balance type 90 degree phase shifter; direct conversion receivers; high pass filters; low cost monolithic IC; low pass filters; monolithic even harmonic quadrature mixer; quadrature detection characteristics; Costs; Inductance; Integrated circuit packaging; Joining processes; L-band; Low pass filters; Monolithic integrated circuits; Phase shifters; Power harmonic filters; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1998 IEEE MTT-S International

Conference_Location

Baltimore, MD, USA

ISSN

0149-645X

Print_ISBN

0-7803-4471-5

Type

conf

DOI

10.1109/MWSYM.1998.689350

Filename

689350