Reconfigurable SIW-Based Leaky-Wave Antenna Composed of Longitudinal Cells | IEEE Journals & Magazine | IEEE Xplore

Reconfigurable SIW-Based Leaky-Wave Antenna Composed of Longitudinal Cells


Backside of the fabricated leaky-wave antenna consisting of reconfigurable cells in longitudinal configuration.

Abstract:

A novel fixed frequency beam-steering leaky-wave antenna (LWA) is presented in this manuscript. Radiation occurs through thin offset longitudinal slots etched on a substr...Show More

Abstract:

A novel fixed frequency beam-steering leaky-wave antenna (LWA) is presented in this manuscript. Radiation occurs through thin offset longitudinal slots etched on a substrate integrated waveguide (SIW). The beam-steering is achieved by implementing GaAs varactor diodes on the backside of the antenna. Sweeping the bias voltage from 1V to 15V causes the phase constant variation, leading to the 25° beam-steering at 28.5 GHz. The key novelties of the proposed reconfigurable antenna are the low-profile and electronic beam-steering capability using a single varactor diode per cell located on the antenna's backside. Moreover, placing the components on the backside reduces the unwanted blockage effects on the radiation. The antenna's thickness, length, and width are 0.32 mm, 95 mm, 24 mm, respectively. The measured peak realized gain of the proposed antenna at 28.5 GHz is 9 ± 0.8 dBi. Low-profile, small gain variation, ease of fabrication, and electronic beam-steering capability make the proposed LWA suitable for the 5G beam-steering applications. A detailed sensitivity analysis along with the experimental validations were performed to prove the validity of the proposed novel design.
Backside of the fabricated leaky-wave antenna consisting of reconfigurable cells in longitudinal configuration.
Published in: IEEE Access ( Volume: 9)
Page(s): 102304 - 102311
Date of Publication: 19 July 2021
Electronic ISSN: 2169-3536

Funding Agency:


References

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