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Miniaturization and bandwidth enhancement of a cavity backed circular microstrip patch antenna

✍ Scribed by Nemai Chandra Karmakar

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
329 KB
Volume
17
Category
Article
ISSN
1096-4290

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✦ Synopsis

The resonant frequency of a circular patch antenna with and without circular cavity is measured. The patch miniaturization in the presence of the cavity is proved. Different methods of reducing resonant frequencies and broadening bandwidth without significantly reducing antenna gain are presented. Capacitively loaded patch and slits on the patch stimulate the patch at lower frequencies and multiple resonances, thus help miniaturization. Finally ferrite loading on the feed probe further increases the bandwidth without significantly reducing the antenna gain. The method is much more improved than that for a resistive loaded patch and a deformed patch. V

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