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Abstract
A 28-GHz substrate-integrated filtering dielectric resonator antenna (DRA) and its 2 × 2 array are investigated. The cylindrical DRA, enclosed by two rings of air vias and metallic vias, is fabricated out of a high-permittivity substrate. It is excited by a microstrip feedline on a second substrate through four slots on the common ground plane of the antenna and feed substrates. The metallic vias and ground plane form a substrate-integrated cavity, which enhances the antenna gain in the passband by ~1 dB. A cavity mode, the DRA HEMy11δ mode, and a perturbed HEMy11δ mode are simultaneously excited, giving a wideband substrate-integrated DRA. A dual-loop structure is introduced to the DRA to provide two radiation nulls that give a filtering response. To demonstrate the idea, a 28-GHz filtering DRA and its 2 × 2 array were designed, fabricated, and measured. Reasonable agreement between the measured and simulated results is observed.
Original language | English |
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Pages (from-to) | 9900-9905 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 70 |
Issue number | 10 |
Online published | 12 Jul 2022 |
DOIs | |
Publication status | Published - Oct 2022 |
Funding
This work was supported in part by the GRF Grant from the Research Grants Council of Hong Kong Special Administrative Region, China, under Project CityU 11218020; and in part by the National Natural Science Foundation of China under Project 62101257.
Research Keywords
- Antenna feeds
- Antennas
- Dielectric resonator antenna (DRA)
- Filtering
- filtering antenna
- Microwave antenna arrays
- Microwave filters
- millimeter-wave (mmWave) antenna
- Slot antennas
- substrate-integrated antenna
- Substrates
Fingerprint
Dive into the research topics of '28 GHz Substrate-Integrated Filtering Dielectric Resonator Antenna Array'. Together they form a unique fingerprint.Projects
- 1 Finished
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GRF: Investigation of Dielectric Resonator Antenna Arrays for Wireless Communications
LEUNG, K. W. (Principal Investigator / Project Coordinator)
1/01/21 → 26/06/25
Project: Research