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Abstract
A beam-switching array is designed using a $4\times 6$ Rotman lens as a beam-forming network to switch the beam towards -30°, -10°, 10°, and 30°. Six substrate integrated waveguide fed $1\times 4$ microstrip patch arrays are used as the radiating elements. The beam-switching array is designed on the LTCC substrate to operate at 71-76 GHz. In this work, the feasibility of implementing a beam-switching network with a vector modulator (VM) integrated circuit as switching element is studied for the first time. The measured radiation pattern of the beam-switching array with the VM is in line with the simulated radiation pattern. The measured peak realized gain of the beam port 1, 2, 3, and 4 with 3-dB backoff gain of the VM are 17, 17, 17.8, 16.9 dBi at 75 GHz, respectively. In addition, the work demonstrates the possibility of beam-reconfigurability in beam-switching array by simultaneous excitation of the beam ports in optimum phase using the VM. The simultaneous excitation of the adjacent two ports, 1-2, 2-3, and 3-4, steer the beam towards -19°, 0°, and 19°, respectively, which improves the beam cross-over level. With various combinations of simultaneous excitation, the half power beam-width of the beam-switching array is varied from 17.8° to 75°.
Original language | English |
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Article number | 9391662 |
Pages (from-to) | 52872-52882 |
Number of pages | 11 |
Journal | IEEE Access |
Volume | 9 |
DOIs | |
Publication status | Published - 2021 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Array
- beam reconfigurability
- beam-switching
- microstrip patch antenna
- millimeter-wave
- Rotman lens
- vector modulator
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Dive into the research topics of 'Beam-Reconfigurable Antenna Based on Vector Modulator and Rotman Lens on LTCC'. Together they form a unique fingerprint.Projects
- 3 Finished
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ADENN: Arrays with deep-neural-network backend for millimeter-wave beamforming applications
Ala-Laurinaho, J. (Principal investigator), Pälli, S.-V. (Project Member), Tamminen, A. (Project Member) & Karki, S. (Project Member)
01/01/2019 → 31/12/2021
Project: Academy of Finland: Other research funding
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5WAVE - RAD
Ala-Laurinaho, J. (Project Member), Viikari, V. (Principal investigator), Semkin, V. (Project Member), Kähkönen, H. (Project Member), Islam, M. (Project Member) & Karki, S. (Project Member)
01/01/2016 → 31/03/2019
Project: Business Finland: Other research funding
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5WAVE: Millimetre-wave front-ends for 5G wireless backhaul and access networks
Karaca, D. (Project Member), Parveg, D. (Project Member), Halonen, K. (Principal investigator), Varonen, M. (Project Member), Ahamed, R. (Project Member), Najmussadat, M. (Project Member) & Tawfik, Y. (Project Member)
01/01/2016 → 31/03/2019
Project: Business Finland: Other research funding