Novel Reconfigurable Full-Metal Cavity-Backed Slot Antennas Using Movable Metal Posts

Chen, Rui‐Sen; Li, Zhu; Yu, Xu-Zhou; Li, Yin; He, Wei; Zhang, Long; He, Yejun

doi:10.1109/tap.2021.3069584

Cited by 14 publications

(2 citation statements)

References 29 publications

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“…For example, the SIW based filtenna in [5] exhibits an efficiency of 59% at 3.7 GHz. Fully-metallic waveguidebased filtennas exhibit lower loss and higher efficiency as shown in [6] for a cavity-backed slot antenna with a realized gain of 6 dBi and an efficiency of 88%. However, these types of approaches exhibit large volume (>0.25𝜆 ).…”

Section: Introductionmentioning

confidence: 99%

Monolithically Integrated Coaxial Resonator-Based Filtennas Using SLA Three-Dimensional Printing

Zhao

Psychogiou

2023

Antennas Wirel. Propag. Lett.

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Section: Introductionmentioning

confidence: 99%

Monolithically Integrated Coaxial Resonator-Based Filtennas Using SLA Three-Dimensional Printing

Zhao

Psychogiou

2023

Antennas Wirel. Propag. Lett.

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“…Mechanical tuning elements like metallic tuning screws [10] or posts [11], and piezo-enabled tuners [12], [13] can be used to attain frequency-agility with high power handling and high linearity, unlike the semiconductor junction devices. In [13], a mechanically tunable evanescent-mode (EVA-mode) cavity-backed slot antenna (CBSA) is presented with a Power Handling Capability (PHC) of up to 80 W. The EVA-mode antenna's center frequency is tuned by changing the critical gap between the post and cavity ceiling of the EVA-mode cavity with a piezoelectric disk that is bonded onto the cavity [13].…”

Section: Introductionmentioning

confidence: 99%

Tunable SIW-Based Evanescent-Mode Cavity-Backed Slot Antenna With Contactless Tuning

et al. 2023

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This paper presents a frequency reconfigurable evanescent-mode cavity-backed slot antenna (ECBSA) with a wide tuning range, high-power handling capability, and simplified manufacturing. The tuning mechanism consists of external long-range linear actuators and a contactless tuner disc to vary the capacitive loading of an evanescent-mode cavity. The antenna's operating frequency is tuned by changing the cavity's critical gap size. Radiation occurs through an annular slot aperture on the cavity's ground plane. The design is realized on a printed circuit board (PCB) using substrate-integrated waveguide (SIW) technology to facilitate easier system integration with other planar circuits. The fabricated prototype of the antenna shows 40% tuning from 1.71-2.58 GHz when the contactless tuner is displaced vertically across a distance of 508 µm. Measurement results for the peak realized gain of ECBSA is as high as 5.48 dB at the maximum operating frequency of 2.58 GHz. Due to a larger range of the cavity's critical gap sizes, achieved using external linear actuators, the power handling capability is higher than the typically used piezoelectric disk tuners in ECBSA design. The proposed antenna also exhibits the largest tuning range among the highpower mechanically-tuned cavity-backed slot antennas presented in the literature.INDEX TERMS Tunable slot antennas, evanescent-mode cavity, high-power, contactless tuning, substrateintegrated waveguide (SIW)

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Additively-Manufactured Coaxial Resonator-Based Filtennas

Zhao

Psychogiou

2022

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)

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Novel Reconfigurable Full-Metal Cavity-Backed Slot Antennas Using Movable Metal Posts

Cited by 14 publications

References 29 publications

Monolithically Integrated Coaxial Resonator-Based Filtennas Using SLA Three-Dimensional Printing

Monolithically Integrated Coaxial Resonator-Based Filtennas Using SLA Three-Dimensional Printing

Tunable SIW-Based Evanescent-Mode Cavity-Backed Slot Antenna With Contactless Tuning

Additively-Manufactured Coaxial Resonator-Based Filtennas

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