A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications
A low-profile dual-polarized shared-aperture phased array antenna is proposed for Ku-band satellite communications in this paper. The stacked octagonal patches loaded with Via-rings are proposed as dual-polarized shared-aperture radiation elements, with the characteristics of wide impedance bandwidt...
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2025-06-01
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| author | Yuhan Huang Jie Zhang Xiuping Li Zihang Qi Fan Lu Hua Jiang Xin Xue Hua Zhu Xiaobin Guo |
| author_facet | Yuhan Huang Jie Zhang Xiuping Li Zihang Qi Fan Lu Hua Jiang Xin Xue Hua Zhu Xiaobin Guo |
| author_sort | Yuhan Huang |
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| description | A low-profile dual-polarized shared-aperture phased array antenna is proposed for Ku-band satellite communications in this paper. The stacked octagonal patches loaded with Via-rings are proposed as dual-polarized shared-aperture radiation elements, with the characteristics of wide impedance bandwidth, high gain, and weak coupling. Furthermore, innovative minimized three-port ring couplers are utilized for the differential-fed antenna array, further suppressing the cross-polarization component. Substrate integrated coaxial line (SICL) and microstrip line (MS) feed networks are employed for the excitation of transmitting band (Tx) horizontal polarization and receiving band (Rx) vertical polarization, respectively. The non-uniform subarray architecture is optimized to minimize the sidelobe levels with the reduced number of transmitter and receiver (T/R) radio frequency phase-shifting modules. As proof-of-concept examples, 16 × 24 and 32 × 24 array antennas are demonstrated and fabricated. The measured impedance bandwidths of the proposed phased array antennas are around 21.1%, while the in-band isolations are above 36.7 dB. Gains up to 29 dBi and 32.4 dBi are performed by two prototypes separately. In addition, the T/R phase-shifting modules are utilized to validate the beam-scanning characteristic, which is of value for dynamic satellite communications. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-2f62b588dac5440083c839df6a9729bb2025-08-20T03:50:17ZengMDPI AGSensors1424-82202025-06-012513398610.3390/s25133986A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite CommunicationsYuhan Huang0Jie Zhang1Xiuping Li2Zihang Qi3Fan Lu4Hua Jiang5Xin Xue6Hua Zhu7Xiaobin Guo8Beijing Institute of Spacecraft System Engineering, Beijing Engineering Research Center of EMC and Antenna Test Technology, Beijing 100094, ChinaBeijing Institute of Spacecraft System Engineering, Beijing Engineering Research Center of EMC and Antenna Test Technology, Beijing 100094, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaBeijing Institute of Spacecraft System Engineering, Beijing Engineering Research Center of EMC and Antenna Test Technology, Beijing 100094, ChinaBeijing Institute of Spacecraft System Engineering, Beijing Engineering Research Center of EMC and Antenna Test Technology, Beijing 100094, ChinaBeijing Institute of Spacecraft System Engineering, Beijing Engineering Research Center of EMC and Antenna Test Technology, Beijing 100094, ChinaKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaA low-profile dual-polarized shared-aperture phased array antenna is proposed for Ku-band satellite communications in this paper. The stacked octagonal patches loaded with Via-rings are proposed as dual-polarized shared-aperture radiation elements, with the characteristics of wide impedance bandwidth, high gain, and weak coupling. Furthermore, innovative minimized three-port ring couplers are utilized for the differential-fed antenna array, further suppressing the cross-polarization component. Substrate integrated coaxial line (SICL) and microstrip line (MS) feed networks are employed for the excitation of transmitting band (Tx) horizontal polarization and receiving band (Rx) vertical polarization, respectively. The non-uniform subarray architecture is optimized to minimize the sidelobe levels with the reduced number of transmitter and receiver (T/R) radio frequency phase-shifting modules. As proof-of-concept examples, 16 × 24 and 32 × 24 array antennas are demonstrated and fabricated. The measured impedance bandwidths of the proposed phased array antennas are around 21.1%, while the in-band isolations are above 36.7 dB. Gains up to 29 dBi and 32.4 dBi are performed by two prototypes separately. In addition, the T/R phase-shifting modules are utilized to validate the beam-scanning characteristic, which is of value for dynamic satellite communications.https://www.mdpi.com/1424-8220/25/13/3986dual-polarizedphased arrayKu-Band satellite communicationsshared-aperturenonuniform subarraydifferential-fed |
| spellingShingle | Yuhan Huang Jie Zhang Xiuping Li Zihang Qi Fan Lu Hua Jiang Xin Xue Hua Zhu Xiaobin Guo A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications Sensors dual-polarized phased array Ku-Band satellite communications shared-aperture nonuniform subarray differential-fed |
| title | A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications |
| title_full | A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications |
| title_fullStr | A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications |
| title_full_unstemmed | A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications |
| title_short | A Low-Profile Dual-Polarized High-Gain Low Cross-Polarization Phased Array for Ku-Band Satellite Communications |
| title_sort | low profile dual polarized high gain low cross polarization phased array for ku band satellite communications |
| topic | dual-polarized phased array Ku-Band satellite communications shared-aperture nonuniform subarray differential-fed |
| url | https://www.mdpi.com/1424-8220/25/13/3986 |
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