A modified half U-slot microstrip patch antennas with shorting wall

Author

Nandgaonkar, A.B. ; Deosarkar, S.B. ; Shirbahadurkar, S.D.

Author_Institution

Dr. Babasaheb Ambedkar Technol. Univ., Lonere

fYear

2007

fDate

April 30 2007-May 2 2007

Firstpage

1

Lastpage

4

Abstract

The major limitations of microstrip antennas (MSAs) are their narrow impedance bandwidth, small gain and low power handling capability. A half U-slot MSA with shorting wall has been designed and experimentally verified. Its center frequency is observed at 2.66 GHz. The bandwidth is 688 MHz and percentage bandwidth is 25.6% has been obtained while radiation efficiency is above 94% for the operating band. A novel design for increasing the bandwidth of a rectangular patch antenna is introduced and implemented. The design concept involves cutting an extra slot on a half U-slot MSA with shorting wall loading. This new design is very useful since it improves the bandwidth of a traditional U-slot patch antenna with an advantage of reduction in size. Measured VSWR bandwidth of 20 % and average gain of 7 dBi have been achieved. The efficiency is above 95% in the entire operating range.

Keywords

bandwidth allocation; microstrip antennas; slot antennas; VSWR bandwidth; bandwidth 688 MHz; frequency 2.66 GHz; modified half U-slot microstrip patch antennas; narrow impedance bandwidth; radiation efficiency; rectangular patch antenna; shorting wall; Bandwidth; Dielectric substrates; Fabrication; Feeds; Frequency; Geometry; Impedance; Microstrip antennas; Patch antennas; Probes;

fLanguage

English

Publisher

ieee

Conference_Titel

Sarnoff Symposium, 2007 IEEE

Conference_Location

Nassau Inn, Princeton, NJ

Print_ISBN

978-1-4244-2483-2

Type

conf

DOI

10.1109/SARNOF.2007.4567369

Filename

4567369