X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity
In this paper, a waveguide reflectionless filtering antenna array with high selectivity is proposed. Instead of reflecting the out-of-band signal back to the source, the proposed antenna array dissipates the energy through a lossy network, which can reduce the interference to the former stage. The p...
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IEEE
2025-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
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| Online Access: | https://ieeexplore.ieee.org/document/10700742/ |
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| author | Jun Ma Fuchang Chen Kairan Xiang |
| author_facet | Jun Ma Fuchang Chen Kairan Xiang |
| author_sort | Jun Ma |
| collection | DOAJ |
| description | In this paper, a waveguide reflectionless filtering antenna array with high selectivity is proposed. Instead of reflecting the out-of-band signal back to the source, the proposed antenna array dissipates the energy through a lossy network, which can reduce the interference to the former stage. The prototype circuit of the reflectionless filtering antenna array based on the complementary duplex theory is established, consisting of a bandpass network and a bandstop network, whose responses are completely complementary. High selectivity is achieved by introducing non-resonating nodes (NRNs) and configuring the transmission zeros (TZs) of the bandpass network and the reflection zeros (RZs) of the bandstop network to be set at the same frequency. The synthesis of the prototype circuit is given and a fourth-order reflectionless filtering antenna array is designed and fabricated to verify the design method. Two TZs are generated at 9.62 GHz and 10.4 GHz, leading to an out-of-band suppression of more than 23 dB. The measured <inline-formula> <tex-math notation="LaTeX">$|S_{11}|$ </tex-math></inline-formula> is less than −10 dB from 8.3 GHz to 12 GHz, providing a wideband reflectionless filtering response with high selectivity and high gain. |
| format | Article |
| id | doaj-art-ecb1e620761c4687b987f37181a2e460 |
| institution | Kabale University |
| issn | 2637-6431 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj-art-ecb1e620761c4687b987f37181a2e4602025-01-31T00:02:14ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312025-01-016112012610.1109/OJAP.2024.347084310700742X-Band Waveguide Reflectionless Filtering Antenna Array With High SelectivityJun Ma0Fuchang Chen1https://orcid.org/0000-0001-9866-091XKairan Xiang2https://orcid.org/0000-0001-7618-0683School of Electronic and Information Engineering, South China University of Technology, Guangzhou, ChinaSchool of Electronic and Information Engineering, South China University of Technology, Guangzhou, ChinaSchool of Electronic and Information Engineering, South China University of Technology, Guangzhou, ChinaIn this paper, a waveguide reflectionless filtering antenna array with high selectivity is proposed. Instead of reflecting the out-of-band signal back to the source, the proposed antenna array dissipates the energy through a lossy network, which can reduce the interference to the former stage. The prototype circuit of the reflectionless filtering antenna array based on the complementary duplex theory is established, consisting of a bandpass network and a bandstop network, whose responses are completely complementary. High selectivity is achieved by introducing non-resonating nodes (NRNs) and configuring the transmission zeros (TZs) of the bandpass network and the reflection zeros (RZs) of the bandstop network to be set at the same frequency. The synthesis of the prototype circuit is given and a fourth-order reflectionless filtering antenna array is designed and fabricated to verify the design method. Two TZs are generated at 9.62 GHz and 10.4 GHz, leading to an out-of-band suppression of more than 23 dB. The measured <inline-formula> <tex-math notation="LaTeX">$|S_{11}|$ </tex-math></inline-formula> is less than −10 dB from 8.3 GHz to 12 GHz, providing a wideband reflectionless filtering response with high selectivity and high gain.https://ieeexplore.ieee.org/document/10700742/Bandstop filter (BSF)compactnon-resonating nodes (NRNs)reflectionless filtering antenna arraywaveguide antenna array |
| spellingShingle | Jun Ma Fuchang Chen Kairan Xiang X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity IEEE Open Journal of Antennas and Propagation Bandstop filter (BSF) compact non-resonating nodes (NRNs) reflectionless filtering antenna array waveguide antenna array |
| title | X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity |
| title_full | X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity |
| title_fullStr | X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity |
| title_full_unstemmed | X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity |
| title_short | X-Band Waveguide Reflectionless Filtering Antenna Array With High Selectivity |
| title_sort | x band waveguide reflectionless filtering antenna array with high selectivity |
| topic | Bandstop filter (BSF) compact non-resonating nodes (NRNs) reflectionless filtering antenna array waveguide antenna array |
| url | https://ieeexplore.ieee.org/document/10700742/ |
| work_keys_str_mv | AT junma xbandwaveguidereflectionlessfilteringantennaarraywithhighselectivity AT fuchangchen xbandwaveguidereflectionlessfilteringantennaarraywithhighselectivity AT kairanxiang xbandwaveguidereflectionlessfilteringantennaarraywithhighselectivity |