Microstrip antenna having an internal feed

Details Microstrip antenna having an internal feed Microstrip antenna having an internal feed

1999-01-19

2000-01-11

Wong, Don

Communications: radio wave antennas

Antennas

Microstrip

343767, H01Q 138

Patent

active

060141050

ABSTRACT:
A one half wavelength microstrip antenna which has its structural feed po positioned in a location which is different from the location of its electrical feed point. The microstrip antenna comprises a disc-shaped dielectric which has a radiating patch mounted on its upper surface and a ground plane affixed to its lower surface. Attached to the bottom surface of the ground plane is a threaded coaxial cable connecter for receiving a coaxial cable which supplies a microwave signal to the microstrip antenna. Extending vertically upward from the connector is a center contact pin which electrically couples the antenna element to the coaxial cable. The antenna element includes a V-shaped element of etched copper which has its rounded bottom portion positioned adjacent the center contact pin. The area enclosed by V-shaped element of etched copper forms a 50 ohm transmission line which electrically connects the center contact pin to the antenna feed point of the microstrip antenna which allows for the transmission of the microwave signal from the center contact pin to the antenna feed point.

REFERENCES:
patent: 4766440 (1988-08-01), Gegan
patent: 4771291 (1988-09-01), Lo et al.

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