Abstract
A uniformly excited slotted waveguide (WG) antenna array for point-to-point communication is presented. The European Telecommunications Standards Institute class-II sidelobe level requirements are satisfied in all planes at almost all frequencies by the aperiodic arrangement of several parallel ridge WGs in the E-plane, each with a different number of equally spaced radiating slots along the H-plane. Both the optimal separation and number of slots per WG are determined through a compressive sensing approach. This results in 160 slots organized in 16 columns offering 29 dBi peak gain at Ka-band. A dedicated 16-way analog beamforming network is designed to provide the optimal nonuniform and in-phase excitation of the 16 WG channels, thereby compensating for the variable number of slots per column and the phase difference due to the E-plane aperiodicity. The measurements confirm the simulated reflection coefficient and radiation pattern characteristics, as well as the high aperture efficiency (70%-90%) over a 13.6% relative bandwidth (27.5-31.5 GHz) and <2 dB gain variation over 3.75 GHz (12.7%).
| Language | English |
|---|---|
| Article number | 8606072 |
| Pages | 2992-2999 |
| Number of pages | 8 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 67 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2019 |
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Keywords
- Aperiodic array
- compressive sensing
- irregular array
- slotted waveguide (WG) antenna
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High-efficiency and wideband aperiodic array of uniformly excited slotted waveguide antennas designed through compressive sensing. / Shi, Lei; Bencivenni, Carlo; Maaskant, Rob; Wettergren, Johan; Pragt, Johan; Ivashina, Marianna (Corresponding author).
In: IEEE Transactions on Antennas and Propagation, Vol. 67, No. 5, 8606072, 01.05.2019, p. 2992-2999.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - High-efficiency and wideband aperiodic array of uniformly excited slotted waveguide antennas designed through compressive sensing
AU - Shi,Lei
AU - Bencivenni,Carlo
AU - Maaskant,Rob
AU - Wettergren,Johan
AU - Pragt,Johan
AU - Ivashina,Marianna
PY - 2019/5/1
Y1 - 2019/5/1
N2 - A uniformly excited slotted waveguide (WG) antenna array for point-to-point communication is presented. The European Telecommunications Standards Institute class-II sidelobe level requirements are satisfied in all planes at almost all frequencies by the aperiodic arrangement of several parallel ridge WGs in the E-plane, each with a different number of equally spaced radiating slots along the H-plane. Both the optimal separation and number of slots per WG are determined through a compressive sensing approach. This results in 160 slots organized in 16 columns offering 29 dBi peak gain at Ka-band. A dedicated 16-way analog beamforming network is designed to provide the optimal nonuniform and in-phase excitation of the 16 WG channels, thereby compensating for the variable number of slots per column and the phase difference due to the E-plane aperiodicity. The measurements confirm the simulated reflection coefficient and radiation pattern characteristics, as well as the high aperture efficiency (70%-90%) over a 13.6% relative bandwidth (27.5-31.5 GHz) and <2 dB gain variation over 3.75 GHz (12.7%).
AB - A uniformly excited slotted waveguide (WG) antenna array for point-to-point communication is presented. The European Telecommunications Standards Institute class-II sidelobe level requirements are satisfied in all planes at almost all frequencies by the aperiodic arrangement of several parallel ridge WGs in the E-plane, each with a different number of equally spaced radiating slots along the H-plane. Both the optimal separation and number of slots per WG are determined through a compressive sensing approach. This results in 160 slots organized in 16 columns offering 29 dBi peak gain at Ka-band. A dedicated 16-way analog beamforming network is designed to provide the optimal nonuniform and in-phase excitation of the 16 WG channels, thereby compensating for the variable number of slots per column and the phase difference due to the E-plane aperiodicity. The measurements confirm the simulated reflection coefficient and radiation pattern characteristics, as well as the high aperture efficiency (70%-90%) over a 13.6% relative bandwidth (27.5-31.5 GHz) and <2 dB gain variation over 3.75 GHz (12.7%).
KW - Aperiodic array
KW - compressive sensing
KW - irregular array
KW - slotted waveguide (WG) antenna
UR - http://www.scopus.com/inward/record.url?scp=85059800523&partnerID=8YFLogxK
U2 - 10.1109/TAP.2019.2891647
DO - 10.1109/TAP.2019.2891647
M3 - Article
VL - 67
SP - 2992
EP - 2999
JO - IEEE Transactions on Antennas and Propagation
T2 - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 5
M1 - 8606072
ER -