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Microstrip Antenna

 
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Ajrocker
Antenna-Theory.com Newbie


Joined: 01 May 2009
Posts: 1

PostPosted: Fri May 08, 2009 3:18 am    Post subject: Microstrip Antenna Reply with quote

Hi,
Can anyone tell me what effect does the width of the microstrip antenna have on the radiation pattern and gain and any other parameters of a microstrip antenna. Assume any kind of feed line.

Thanks
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Schubert
Antenna Wizard


Joined: 08 Apr 2009
Posts: 161

PostPosted: Fri May 08, 2009 5:58 am    Post subject: Patch or Microstrip Antenna Width Reply with quote

Primarily, the width controls the impedance of the microstrip antenna. The wider it is made, the lower the impedance is. A square microstrip or patch antenna fed at the end would have an impedance of about 200 or so Ohms. If it was made much wider (for a given length), the impedance can be reduced to 50 Ohms, over a small bandwidth. The efficiency and directivity don't change much.
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