| 摘要 |
<p>A loop directive antenna (12) having improved front-to-back ratio and gain for given 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 (12) consists of a main loop antenna conductor (28) disposed upon a dielectric member (30). The main loop antenna conductor (28) and dielectric member (30) are maintained a predetermined distance away from a ground plane (32), which may be the circuit board or other conductive member. The main loop antenna conductor (28) can be formed as either a close loop or open loop and may include a variety of feedpoint orientations to provide alternative polarizations of the transmitted signal.</p> |
