Surface mounted chassis antenna atop dielectric base plate and h

Details Surface mounted chassis antenna atop dielectric base plate and h Surface mounted chassis antenna atop dielectric base plate and h

1995-11-09

1997-11-25

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

343702, 343828, 343846, H01Q 138

Patent

active

056917325

ABSTRACT:
An antenna device for surface mounting has a dielectric base plate, a chassis made of an electrically conductive material and attached to the dielectric base plate, a feed electrode and grounding electrodes. The chassis has a planar radiative part facing the upper surface of the dielectric base plate and side walls at its edges. The side walls are provided with slits which separate portions of the side wall into removable parts. The resonance frequency of the antenna device can be adjusted by cutting off and removing one or more of these removable parts of the side walls. These removable parts can be cut off and removed even after the chassis has been attached to the base plate or the antenna device has been mounted to a circuit board.

REFERENCES:
patent: 5262792 (1993-11-01), Egashira
patent: 5467095 (1995-11-01), Rodal et al.

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