Control of mode-switching in an active antenna using MESFET

Author

Minegishi, Masahiko ; Lin, Jenshan ; Itoh, Tatsuo ; Kawasaki, Shigeo

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

43

Issue

8

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

1869

Lastpage

1874

Abstract

New techniques of realizing mode-switching in an active antenna by using a MESFET are presented. Two types of control circuits are discussed. One is the control circuit using the reactance variation of the MESFET and the other is the control circuit using the resistance variation of the MESFET. The design of these two control circuits is discussed and the beam-switching phenomena of the antenna using these control circuits are compared. Important characteristics such as antenna patterns, operating frequencies and the insertion loss of the control circuits are also compared and discussed

Keywords

MESFET circuits; active antennas; antenna radiation patterns; losses; microstrip antennas; microwave integrated circuits; switching; MESFET circuit; MIC; active antenna; antenna patterns; beam-switching phenomena; control circuits; insertion loss; mode-switching control; operating frequencies; reactance variation; resistance variation; Antenna arrays; Antenna radiation patterns; Antenna theory; Capacitance; Communication system control; Coupling circuits; MESFET circuits; Microstrip antenna arrays; Microwave antennas; Optical control;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.402275

Filename

402275