Ultra-Compact Micromachined Beam-Steering Antenna Front-End for High-Resolution Sub-Terahertz Radar

Shah, Umer; Gómez, Andrés Ávila; Oberhammer, Joachim

doi:10.1109/irmmw-thz.2019.8874392

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) 2019

DOI: 10.1109/irmmw-thz.2019.8874392

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Ultra-Compact Micromachined Beam-Steering Antenna Front-End for High-Resolution Sub-Terahertz Radar

Umer Shah

Andrés Ávila Gómez

Joachim Oberhammer

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2023

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Sub-THz Silicon-Micromachined Reconfigurable Beam-Steering Frontend

Karimi,

Shah,

Oberhammer

2023

2023 53rd European Microwave Conference (EuMC)

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This paper presents a silicon micromachined reconfigurable beam-steering frontend chip in which multiple components are integrated within a single silicon chip. The size of the whole frontend chip is 14.3×20×1.2 mm3. The signal path includes a novel switching circuit, a beam-steering network, two power-dividing networks, and a 2×8 array antenna. The presented frontend chip is able to create two frequency steerable beam-shapes. The switching circuit determines which beamshape to be radiated. The first beam-shape is a steerable broad fan-beam with reduced sidelobe level (SLL) in the H-plane, and the second is a steerable notched fan-beam. The measured SLL of the broad beam is better than 18.5 dB in the H-plane, and the measured notch depth is better than 24 dB in the E-plane pattern. Both radiation patterns can be steered by frequency and move from -20 degrees at 238 GHz to +20 degrees at 248 GHz. The measured return loss of the fabricated device is better than 15 dB at 220-265 GHz, which is equal to almost 18.6 % fractional bandwidth.

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Sub-THz Silicon-Micromachined Reconfigurable Beam-Steering Frontend

Karimi,

Shah,

Oberhammer

2023

2023 53rd European Microwave Conference (EuMC)

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Ultra-Compact Micromachined Beam-Steering Antenna Front-End for High-Resolution Sub-Terahertz Radar

Cited by 1 publication

References 4 publications

Sub-THz Silicon-Micromachined Reconfigurable Beam-Steering Frontend

Sub-THz Silicon-Micromachined Reconfigurable Beam-Steering Frontend

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