Microstrip antenna device, in particular for telephone transmissions by satellite
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United States of America Patent
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-
Nov 30, 1999
Issued Date -
N/A
app pub date -
Feb 24, 1997
filing date -
Nov 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved microstrip antenna device, in particular for telephone transmissions by satellite. An antenna comprises a first dielectric layer including on one side a ground plane and on the other a first conductive patch of a chosen shape, a second dielectric lalyer surmounts the first dielectrica layer on the side adjacent to the first patch and supports, on the other side remote from the first patch, a second cnoductive patch of a chosen shape. A third dielectric layer surmounts the second. The second patch is of a size smaller than that of the first patch and this first patch is fed from below at at least one chosen point situated between its center and its circumference. Advantageously, the first patch is connected to a lead-in of the ground plane joining a feeding circuit implanted in a dielectric substrate of a three-plate structure.
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