A Full-Duplex Dual Wideband Horn Antenna with High Port-to-Port Isolation

Yulin Tao; Changjiang Deng; Xiaowei Cao; Kamal Sarabandi

doi:10.1109/TAP.2024.3467693

A Full-Duplex Dual Wideband Horn Antenna with High Port-to-Port Isolation

Yulin Tao, Changjiang Deng^*, Xiaowei Cao, Kamal Sarabandi

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Research output: Contribution to journal › Article › peer-review

Abstract

A highly isolated dual-band full-duplex antenna subsystem operating at 8-18 GHz (X-/Ku-band) and 32-40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.

Original language	English
Pages (from-to)	8876-8881
Number of pages	6
Journal	IEEE Transactions on Antennas and Propagation
Volume	72
Issue number	11
DOIs	https://doi.org/10.1109/TAP.2024.3467693
Publication status	Published - 2024

Keywords

Horn antenna
isolation improvement
simultaneous transmit and receive (STAR)
wideband

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10.1109/TAP.2024.3467693

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title = "A Full-Duplex Dual Wideband Horn Antenna with High Port-to-Port Isolation",

abstract = "A highly isolated dual-band full-duplex antenna subsystem operating at 8-18 GHz (X-/Ku-band) and 32-40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.",

keywords = "Horn antenna, isolation improvement, simultaneous transmit and receive (STAR), wideband",

author = "Yulin Tao and Changjiang Deng and Xiaowei Cao and Kamal Sarabandi",

note = "Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

year = "2024",

doi = "10.1109/TAP.2024.3467693",

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AU - Tao, Yulin

AU - Deng, Changjiang

AU - Cao, Xiaowei

AU - Sarabandi, Kamal

PY - 2024

Y1 - 2024

N2 - A highly isolated dual-band full-duplex antenna subsystem operating at 8-18 GHz (X-/Ku-band) and 32-40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.

AB - A highly isolated dual-band full-duplex antenna subsystem operating at 8-18 GHz (X-/Ku-band) and 32-40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.

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KW - wideband

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A Full-Duplex Dual Wideband Horn Antenna with High Port-to-Port Isolation

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Keywords

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