Broadband microwave slot antennas, and antenna arrays including

Details Broadband microwave slot antennas, and antenna arrays including Broadband microwave slot antennas, and antenna arrays including

1990-01-25

1991-11-26

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Slot type

343770, 343862, 343864, H01Q 1310

Patent

active

050686704

ABSTRACT:
A broadband microwave antenna exhibiting high radiation efficiency over a broad frequency band in which the VSWR is less than 2.5:1 over at least 15% of the frequency band, includes a ground plane at one side of a dielectric substrate and formed with at least one slot, and a feed strip at the other side of the substrate. The feed strip is of uniform width for substantially its complete length, but includes a change in width at the feed end of the slot to produce a first impedance matching network effective to bring the slot impedance to the level of the feed line over the broad frequency band, and another change in width at the load end of the slot to produce a second impedance matching network which reduces the slot reactance to match the reactive impedance of the load to the reactive part of the slot impedance over the broad frequency band.

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