Design of a low profile phased array filtenna with frequency agility and wide spurious rejection band
Antennas and Propagation(2013)
摘要
In the present work, the design of an X-band low-profile phased array antenna with inherent frequency selectivity properties is presented. While the radiating element consists of a slot-fed-patch antenna, the filtering function is carried out by a band-pass filter integrated in the antenna panel. An effective technique for the rejection of spurious resonances is also described. This is achieved by detuning the corresponding harmonics of the radiating element and filter, as a result of the perturbation of the higher order modes' currents on the patch. Furthermore, frequency reconfigurability is introduced at antenna level in order to extend the operational bandwidth from 8.5 to 10.5 GHz.
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关键词
antenna feeds,antenna phased arrays,antenna radiation patterns,band-pass filters,microstrip antenna arrays,microwave antenna arrays,x-band low-profile phased array antenna,antenna panel,band-pass filter,filtering function,frequency 8.5 ghz to 10.5 ghz,frequency agility,frequency reconfigurability,higher-order mode current perturbation,inherent frequency selectivity properties,low-profile phased array filtenna,radiating element,slot-fed-patch antenna,spurious rejection band,spurious resonance rejection,filtenna,reconfigurable phased array,spurious harmonics,harmonic analysis,band pass filter,resonant frequency,band pass filters
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