Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems
With the growing demand for spectrum utilization, the concept of full duplex transceivers has become attractive. These simultaneous transmit and receive systems (STAR) are attractive as they double bandwidth utilization. To realize STAR, we must suppress self-interference (SI) between transmit and r...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2018-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8245776/ |
| _version_ | 1818927931690319872 |
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| author | Satheesh Bojja Venkatakrishnan Elias A. Alwan John L. Volakis |
| author_facet | Satheesh Bojja Venkatakrishnan Elias A. Alwan John L. Volakis |
| author_sort | Satheesh Bojja Venkatakrishnan |
| collection | DOAJ |
| description | With the growing demand for spectrum utilization, the concept of full duplex transceivers has become attractive. These simultaneous transmit and receive systems (STAR) are attractive as they double bandwidth utilization. To realize STAR, we must suppress self-interference (SI) between transmit and receive antennas. Doing this across a wide bandwidth presents an even greater challenge. Further, for antenna arrays, SI can be higher due to mutual coupling among neighboring elements. In this paper, we achieve 100 dB isolation for practical STAR, across a large 500 MHz bandwidth. Specifically, four stages of the self-interference cancellation are proposed. In addition to high isolation cross-polarized array elements, we employ multi-tap filters at the transceiver RF front-end for interference cancellation. These filters emulate direct SI coupling using frequency-domain optimization techniques. Measured results show an average of 25 dB filter cancellation is possible across 500 MHz. |
| first_indexed | 2024-12-20T03:20:51Z |
| format | Article |
| id | doaj.art-2d935cf17eeb4bfe8d6ea24fedd4d7c4 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T03:20:51Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-2d935cf17eeb4bfe8d6ea24fedd4d7c42022-12-21T19:55:13ZengIEEEIEEE Access2169-35362018-01-0163425343210.1109/ACCESS.2017.27881798245776Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive SystemsSatheesh Bojja Venkatakrishnan0https://orcid.org/0000-0003-0364-5747Elias A. Alwan1John L. Volakis2Department of Electrical and Computer Engineering, Florida International University, Miami, FL, USADepartment of Electrical and Computer Engineering, Florida International University, Miami, FL, USADepartment of Electrical and Computer Engineering, Florida International University, Miami, FL, USAWith the growing demand for spectrum utilization, the concept of full duplex transceivers has become attractive. These simultaneous transmit and receive systems (STAR) are attractive as they double bandwidth utilization. To realize STAR, we must suppress self-interference (SI) between transmit and receive antennas. Doing this across a wide bandwidth presents an even greater challenge. Further, for antenna arrays, SI can be higher due to mutual coupling among neighboring elements. In this paper, we achieve 100 dB isolation for practical STAR, across a large 500 MHz bandwidth. Specifically, four stages of the self-interference cancellation are proposed. In addition to high isolation cross-polarized array elements, we employ multi-tap filters at the transceiver RF front-end for interference cancellation. These filters emulate direct SI coupling using frequency-domain optimization techniques. Measured results show an average of 25 dB filter cancellation is possible across 500 MHz.https://ieeexplore.ieee.org/document/8245776/RF Cancellationself-interference cancellationwideband interference cancellationin-band full duplexsimultaneous transmit and receive |
| spellingShingle | Satheesh Bojja Venkatakrishnan Elias A. Alwan John L. Volakis Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems IEEE Access RF Cancellation self-interference cancellation wideband interference cancellation in-band full duplex simultaneous transmit and receive |
| title | Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems |
| title_full | Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems |
| title_fullStr | Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems |
| title_full_unstemmed | Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems |
| title_short | Wideband RF Self-Interference Cancellation Circuit for Phased Array Simultaneous Transmit and Receive Systems |
| title_sort | wideband rf self interference cancellation circuit for phased array simultaneous transmit and receive systems |
| topic | RF Cancellation self-interference cancellation wideband interference cancellation in-band full duplex simultaneous transmit and receive |
| url | https://ieeexplore.ieee.org/document/8245776/ |
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