On the Development of a Lens Phased-Array at 100GHz

Master thesis (2021)

Authors

N. van Rooijen Electrical Engineering, Mathematics and Computer Science

Contributors

M. Alonso Del Pino Tera-Hertz Sensing - EEMCS (supervisor 1)
S. Bosma Tera-Hertz Sensing - EEMCS (supervisor 1)
Nuria Llombart Tera-Hertz Sensing - EEMCS (supervisor 2)
M. Spirito Electronics - EEMCS (supervisor 2)
A. Neto Tera-Hertz Sensing - EEMCS (supervisor 2)
Faculty
Electrical Engineering, Mathematics and Computer Science
Copyright: © 2021 Nick van Rooijen
Antenna Phased-array Scanning High frequency Leaky lens Sub-mm WR-10
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Published Date

23-06-2021

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

This thesis is concerned with a first time demonstration of a high frequency scanning lens phased­-array with dynamic steering. Such phased­-array could provide the high gain, wide bandwidth, and steering capability that the next generation of wireless ap­plications requires. The phased-­array development was divided into three distinct parts. First, the electronic phase steering system was discussed and developed, and its stability was characterized over time. Results obtained over 24 hours indicated that the system would be stable to within 6° of high frequency output phase. The drifts in output amplitude remained to within 0.3dB. Next, the lens antenna elements were developed with a novel corrugated leaky ­wave feed that provides very high and broadband aperture efficiency. Antenna measurements have validated its ability to be a very aperture efficient radiator (>80%) with wide bandwidth (1:2). Scanning measurements have shown a 3dB scan loss at around 15°. Finally, the phase steer­ing and antenna elements were combined into a 4×1 array concept. Its behaviour was simulated and indicated again good performance with wide bandwidth (1:2) and high directivity (31.5dBi). Simulated scan loss was approximately 3dB at 20°. The amplitude and phase errors resulted in a SLL standard deviation of 0.63dB. The array prototype is currently awaiting completion of fabrication by DEMO at the TU Delft.