Miniature Multielement Antennas for Diversity Wireless Communications
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چکیده
We present a new reconfigurable broadband miniature antenna architecture that is able to change its working frequency, polarization, or radiation pattern to get single broadband or dualband behavior for a single widebeam or multibeam diversity configuration. First the basic so-called “dime” geometry is introduced. Numerical and experimental results for a prototype at 5.2 GHz are presented. Based on the dime antenna, a multielement architecture for use in diversity systems is presented. Short circuit striplines, having typical dimensions of RF MEMS switches, are appropriately located within the antenna structure to change its operating frequency and radiation pattern. Simulated results for a 4-element prototype with a frequency band operation from 5 to 6 GHz are presented. Circuital and radiation characteristics are discussed in terms of reconfigurability and diversity capabilities.
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تاریخ انتشار 2001