| 摘要 |
The present invention is directed to multi-element antennas that include, for each adjacent pair of antenna elements, at least one switch arranged to selectively connect that pair to thereby selectively alter an antenna dimension. Accordingly, a multi-element antenna (61,62, 63) can be configured to enhance its gain at different operational frequencies while a corresponding impedance matching network (44) can enhance the impedance match (i.e., reduce reflected signal energy) between the antenna (20) and a corresponding system (40) (e.g., a transceiver system). The antenna (20) and system (40) can thus be effectively tuned across a wide operational band. The antenna (20) and impedance matching network (44) are configured with switch (36) command signals and match command signals that are provided in response to each of a plurality of frequency codes. |
