Dual frequency antenna

Details Dual frequency antenna Dual frequency antenna

1992-07-13

1994-06-21

Hajec, Donald

Communications: radio wave antennas

Antennas

Microstrip

343769, 343830, H01Q 138

Patent

active

053231686

ABSTRACT:
Antenna apparatus for receiving two distinct frequencies in the MHz or GHz range. A resonator layer of electrically conducting material is positioned in the interior of a dielectric layer that has first and second opposed surfaces (front and back). First and second ground planes are positioned on the first and second opposed surfaces of the substrate. The resonator is electrically connected to an annular strip of conducting material, positioned on the first substrate surface and surrounding the first ground plane. Two receiver feed connections, positioned at selected first and second positions on the patch resonator, receive distinct first and second frequencies. This apparatus may be used to receive the two GPS operating frequencies, the two GLONASS operating frequencies or two wireless LAN operating frequencies.

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Munson, "Microstrip Antennas," Antenna Engineering Handbook, pp. 7-1 to 7-28.

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