A 3-D Millimeter-Wave Filtering Antenna With High Selectivity and Low Cross-Polarization

A three-dimensional (3-D) filtering antenna with features of high selectivity and low cross-polarization is proposed and experimentally verified in this communication. Thanks to the vertically 3-D integration, the high selectivity at either frequency sides of the filtering antenna is achieved by a n...

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Veröffentlicht in:	IEEE transactions on antennas and propagation 2015-05, Vol.63 (5), p.2375-2380
Hauptverfasser:	Chu, Hui, Jin, Chen, Chen, Jian-Xin, Guo, Yong-Xin
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna measurements Antennas Band-pass filters Bandpass filter (BPF) cavity resonator Cavity resonators Couplings Filtering theory low c ross-polarization
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container_title	IEEE transactions on antennas and propagation
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creator	Chu, Hui Jin, Chen Chen, Jian-Xin Guo, Yong-Xin
description	A three-dimensional (3-D) filtering antenna with features of high selectivity and low cross-polarization is proposed and experimentally verified in this communication. Thanks to the vertically 3-D integration, the high selectivity at either frequency sides of the filtering antenna is achieved by a novel cross-coupling scheme between in-band and out-of-band modes in a single cavity located in the lower substrate, while the low cross-polarization in the far-held is realized due to the symmetric feed and radiators on a cavity-backed dual-slot antenna at the upper substrate. In our design, the cavity-backed dual-slot antenna performs not only a radiator but also the last resonator of the bandpass filter (BPF). A prototype is demonstrated at Ka-band with a center frequency of 31.495 GHz and fractional bandwidth of 1.56%. Two radiation nulls [transmission zeros (TZs)] at either frequency band edges can be observed and a cross-polarization level lower than -30 dB is obtained.
doi_str_mv	10.1109/TAP.2015.2411282
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Thanks to the vertically 3-D integration, the high selectivity at either frequency sides of the filtering antenna is achieved by a novel cross-coupling scheme between in-band and out-of-band modes in a single cavity located in the lower substrate, while the low cross-polarization in the far-held is realized due to the symmetric feed and radiators on a cavity-backed dual-slot antenna at the upper substrate. In our design, the cavity-backed dual-slot antenna performs not only a radiator but also the last resonator of the bandpass filter (BPF). A prototype is demonstrated at Ka-band with a center frequency of 31.495 GHz and fractional bandwidth of 1.56%. Two radiation nulls [transmission zeros (TZs)] at either frequency band edges can be observed and a cross-polarization level lower than -30 dB is obtained.</abstract><pub>IEEE</pub><doi>10.1109/TAP.2015.2411282</doi><tpages>6</tpages></addata></record>
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subjects	Antenna measurements Antennas Band-pass filters Bandpass filter (BPF) cavity resonator Cavity resonators Couplings Filtering theory low c ross-polarization
title	A 3-D Millimeter-Wave Filtering Antenna With High Selectivity and Low Cross-Polarization
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