Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation
An eight element Subsampling Time Modulated Array (STMA) operating in receive mode with a carrier at 2.4 GHz is presented and demonstrated using bespoke Radio Frequency (RF) hardware. Each STMA cell incorporates subsampling functionality, with the sampling frequency significantly below the carrier f...
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10175620/ |
| _version_ | 1797770978484289536 |
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| author | Edward A. Ball Sumin David Joseph Alan Tennant |
| author_facet | Edward A. Ball Sumin David Joseph Alan Tennant |
| author_sort | Edward A. Ball |
| collection | DOAJ |
| description | An eight element Subsampling Time Modulated Array (STMA) operating in receive mode with a carrier at 2.4 GHz is presented and demonstrated using bespoke Radio Frequency (RF) hardware. Each STMA cell incorporates subsampling functionality, with the sampling frequency significantly below the carrier frequency and requiring minimal additional hardware. By using this concept, the hardware required for a receiver incorporating an antenna array can be reduced and costs saved. STMA design equations and architecture strategies are presented, and a prototype hardware demonstrator is introduced. Laboratory measurements confirm that a received radiated signal, arranged to use the fundamental or a harmonic beam pointed at the radiating source, can be resolved from the subsampled intermediate frequency (IF) output. The concept demonstration hardware provides a measured array conversion gain of 11.4 dBi on the boresight beam, 7.8 dBi on the first positive and 11.3 dBi on the first negative harmonic beams, as resolved at the final combined IF output. The array IF output Signal to Noise and Distortion ratio is 69 dB. The dependence of array sidelobe level performance on STMA sampling switch rise time is also uncovered, though good performance with real, imperfect, hardware is still obtained. |
| first_indexed | 2024-03-12T21:29:49Z |
| format | Article |
| id | doaj.art-b03834a1e6154e55949b0f58a7106c0f |
| institution | Directory Open Access Journal |
| issn | 2637-6431 |
| language | English |
| last_indexed | 2024-03-12T21:29:49Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj.art-b03834a1e6154e55949b0f58a7106c0f2023-07-27T23:00:18ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312023-01-01462664010.1109/OJAP.2023.329312310175620Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory InvestigationEdward A. Ball0https://orcid.org/0000-0002-6283-5949Sumin David Joseph1https://orcid.org/0000-0001-9756-7596Alan Tennant2Department of Electronic and Electrical Engineering, Communications Research Group, The University of Sheffield, Sheffield, U.K.Department of Electronic and Electrical Engineering, Communications Research Group, The University of Sheffield, Sheffield, U.K.Department of Electronic and Electrical Engineering, Communications Research Group, The University of Sheffield, Sheffield, U.K.An eight element Subsampling Time Modulated Array (STMA) operating in receive mode with a carrier at 2.4 GHz is presented and demonstrated using bespoke Radio Frequency (RF) hardware. Each STMA cell incorporates subsampling functionality, with the sampling frequency significantly below the carrier frequency and requiring minimal additional hardware. By using this concept, the hardware required for a receiver incorporating an antenna array can be reduced and costs saved. STMA design equations and architecture strategies are presented, and a prototype hardware demonstrator is introduced. Laboratory measurements confirm that a received radiated signal, arranged to use the fundamental or a harmonic beam pointed at the radiating source, can be resolved from the subsampled intermediate frequency (IF) output. The concept demonstration hardware provides a measured array conversion gain of 11.4 dBi on the boresight beam, 7.8 dBi on the first positive and 11.3 dBi on the first negative harmonic beams, as resolved at the final combined IF output. The array IF output Signal to Noise and Distortion ratio is 69 dB. The dependence of array sidelobe level performance on STMA sampling switch rise time is also uncovered, though good performance with real, imperfect, hardware is still obtained.https://ieeexplore.ieee.org/document/10175620/Microwave circuitsRF hardware platformtime-modulated antenna arrays (TMAs)signal sampling |
| spellingShingle | Edward A. Ball Sumin David Joseph Alan Tennant Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation IEEE Open Journal of Antennas and Propagation Microwave circuits RF hardware platform time-modulated antenna arrays (TMAs) signal sampling |
| title | Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation |
| title_full | Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation |
| title_fullStr | Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation |
| title_full_unstemmed | Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation |
| title_short | Receive Mode Time-Modulated Antenna Array Incorporating Subsampling—Theoretical Concept and Laboratory Investigation |
| title_sort | receive mode time modulated antenna array incorporating subsampling x2014 theoretical concept and laboratory investigation |
| topic | Microwave circuits RF hardware platform time-modulated antenna arrays (TMAs) signal sampling |
| url | https://ieeexplore.ieee.org/document/10175620/ |
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