Microstrip antenna with bent feed board

Details Microstrip antenna with bent feed board Microstrip antenna with bent feed board

1990-04-10

1991-07-09

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Microstrip

343705, 343770, H01Q 138

Patent

active

050309617

ABSTRACT:
A microstrip antenna including an orthogonal planar array (12) of patch radiators (10) with specially configured feed boards (16) provided for each column of array elements. Each such board includes a portion disposed parallel to the plane of the array and one or more portions bent or folded to extend in the direction of the array axis for a distance sufficient to accommodate necessary circuitry (36) and active devices (40). A metal supporting frame (18) serves both as a common ground for the assembly and as a heat sink for conducting some of the heat generated by the active devices mounted to the feed boards. An additional planar circuit board (22) is positioned beneath the supporting frame to accommodate the power combining circuit and to interconnect all of the elements. Connection between feed boards (16) and combiner board (22) is accomplished using via-connections or a coaxial cable network. The hollows formed by the specially configured feed boards provide passageways for cooling air circulation and further enhance heat dissipation within the device.

REFERENCES:
patent: 4843400 (1989-06-01), Tsao et al.
patent: 4899164 (1990-02-01), McGrath
patent: 4903033 (1990-02-01), Tsao et al.

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