Electronically switchable slot antenna fed by microstrip line

Author

Kolsrud, A.T. ; Ming-Yi Li ; Kai Chang

Author_Institution

Lucent Technol., Whippany, NJ, USA

Volume

2

fYear

1998

fDate

21-26 June 1998

Firstpage

1180

Abstract

Switching of antennas can be done with active components like PIN diodes, varactor diodes, or different types of transistors. In this paper varactor diodes were combined with transverse microstrip fed slot antennas to achieve electronic switching of slot antennas. The switching function of the transverse microstrip fed slot antenna was realized by turning the varactor diode on or off. When the diode was with the negative maximum DC bias voltage, the total impedance of the slot antenna was designed to be well matched to the feedline. The signal radiated out efficiently and the slot antenna was switched on. When the diode was with 0 VDC bias, the total impedance of the antenna structure was designed to be mismatched to the feedline. All power was reflected back due to the mismatch and hence the antenna was switched off.

Keywords

antenna feeds; electric impedance; microstrip lines; semiconductor diodes; slot antennas; switching circuits; varactors; PIN diodes; active components; electronic switching; electronically switchable slot antenna; impedance; microstrip line feeder; mismatch; negative maximum DC bias voltage; transistors; transverse microstrip fed slot antennas; varactor diodes; Antenna accessories; Antenna feeds; Diodes; Impedance; Microstrip antennas; Reflector antennas; Slot antennas; Turning; Varactors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1998. IEEE

Conference_Location

Atlanta, GA, USA

Print_ISBN

0-7803-4478-2

Type

conf

DOI

10.1109/APS.1998.702161

Filename

702161