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Microstrip antennas and multiple radiator array antennas

  • US 4,914,445 A
  • Filed: 12/23/1988
  • Issued: 04/03/1990
  • Est. Priority Date: 12/23/1988
  • Status: Expired due to Term
First Claim
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1. A microstrip antenna comprising:

  • a ground reference,a radiator in the form of a microstrip patch,a microstrip feedline connected at one end to an edge of said radiator, said radiator and feedline being coplanar,a first dielectric layer having a selected first dielectric constant disposed between said radiator and said ground reference,a second dielectric layer having a selected second dielectric constant disposed between said feedline and said ground reference,said first dielectric constant being different than said second dielectric constant,said first dielectric constant being selected to provide for a selected bandwidth, a selected beamwidth and a selected gain for said radiator,said second dielectric constant being selected to provide for selected low conductive losses and selected low dielectric losses for said feedline.

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