초록 ▼

A loop directive antenna having improved front-to-back ratio and gain for given input power levels assembly for a hand-held radio frequency transceiver, such as a cellular telephone or PCS device operating in the 800-900 or 1850-1990 MHz. frequency ranges, respectively, is provided by the present in

A loop directive antenna having improved front-to-back ratio and gain for given input power levels assembly for a hand-held radio frequency transceiver, such as a cellular telephone or PCS device operating in the 800-900 or 1850-1990 MHz. frequency ranges, respectively, is provided by the present invention. The loop directive antenna assembly consists of a main loop antenna conductor disposed upon a dielectric element. The main loop antenna conductor and dielectric element are maintained a predetermined distance away from a ground plane, which may be the circuit board or other conductive element. The main loop antenna conductor may include a variety of feedpoint orientations to provide alternative polarizations of the transmitted signal. The ground plane may be a portion of the printed circuit board of the device, a conductive part of the device housing, the battery pack of the device, or a separate conductive panel.

대표청구항 ▼

[ I claim:] [1.]1. An antenna assembly for a hand-held radio frequency transceiver having a signal conductor and a ground conductor, said antenna assembly comprising:a conductive ground plane element;a dielectric substrate element having a first surface, said first surface maintained a predetermined

[ I claim:] [1.]1. An antenna assembly for a hand-held radio frequency transceiver having a signal conductor and a ground conductor, said antenna assembly comprising:a conductive ground plane element;a dielectric substrate element having a first surface, said first surface maintained a predetermined distance away from the conductive ground plane element; anda loop element disposed upon the first surface of the dielectric substrate element, said loop element having first and second ends disposed generally opposite each other, the signal conductor of the transceiver being coupled proximate said first end, and the ground conductor being coupled proximate said second end, said loop element having a plurality of side elements each having an associated width presented on the dielectric substrate, and wherein the widths of at least a pair of said plurality of side elements are substantially different.