High Gain Windmill-shaped CP Antenna Using High-order Mode and Ground-edge Diffraction
(2018) In IEEE Antennas and Wireless Propagation Letters 17(3). p.368-372- Abstract
- In this letter, the high-order mode and ground-edge diffraction of a slot antenna are used to achieve a high gain. To inhibit the multilobes at the high-order mode, ground-edge diffraction is utilized to form a single main lobe by changing the size of the ground plane of the slot radiator. Then, this slot antenna is employed to construct a windmill-shaped array antenna for circular polarization. A four-way sequential-phase feeding network is designed to feed the four slot elements, which are placed in orthogonal positions to form a windmill shape. A reflector is placed under the four slot elements to make the proposed antenna unidirectional. The slot elements are excited in the high-order resonant mode, instead of the fundamental resonant... (More)
- In this letter, the high-order mode and ground-edge diffraction of a slot antenna are used to achieve a high gain. To inhibit the multilobes at the high-order mode, ground-edge diffraction is utilized to form a single main lobe by changing the size of the ground plane of the slot radiator. Then, this slot antenna is employed to construct a windmill-shaped array antenna for circular polarization. A four-way sequential-phase feeding network is designed to feed the four slot elements, which are placed in orthogonal positions to form a windmill shape. A reflector is placed under the four slot elements to make the proposed antenna unidirectional. The slot elements are excited in the high-order resonant mode, instead of the fundamental resonant mode, and ground-edge diffraction of the slot elements is used to make the radiation pattern form a single strong lobe with increased gain at the +z -direction. The antenna is studied and designed using simulation and measurement. Measured results show that the proposed antenna has a common bandwidth (overlapping of the impedance bandwidth, the axial-ratio bandwidth, and the 1 dB gain bandwidth) of 4.73–5.53 GHz (0.8 GHz, 15.6%), a realized peak gain of 13.4 dBi, and an efficiency higher than 89.2%. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1bf7697b-9214-4ff5-a225-8e5cbfbb07cd
- author
- Zhou, Changfei LU and Cheung, Sing Wai
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Antennas and Wireless Propagation Letters
- volume
- 17
- issue
- 3
- pages
- 368 - 372
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85040064743
- ISSN
- 1548-5757
- DOI
- 10.1109/LAWP.2018.2789355
- language
- English
- LU publication?
- no
- id
- 1bf7697b-9214-4ff5-a225-8e5cbfbb07cd
- date added to LUP
- 2018-03-16 09:11:51
- date last changed
- 2022-04-25 06:16:13
@article{1bf7697b-9214-4ff5-a225-8e5cbfbb07cd, abstract = {{In this letter, the high-order mode and ground-edge diffraction of a slot antenna are used to achieve a high gain. To inhibit the multilobes at the high-order mode, ground-edge diffraction is utilized to form a single main lobe by changing the size of the ground plane of the slot radiator. Then, this slot antenna is employed to construct a windmill-shaped array antenna for circular polarization. A four-way sequential-phase feeding network is designed to feed the four slot elements, which are placed in orthogonal positions to form a windmill shape. A reflector is placed under the four slot elements to make the proposed antenna unidirectional. The slot elements are excited in the high-order resonant mode, instead of the fundamental resonant mode, and ground-edge diffraction of the slot elements is used to make the radiation pattern form a single strong lobe with increased gain at the +z -direction. The antenna is studied and designed using simulation and measurement. Measured results show that the proposed antenna has a common bandwidth (overlapping of the impedance bandwidth, the axial-ratio bandwidth, and the 1 dB gain bandwidth) of 4.73–5.53 GHz (0.8 GHz, 15.6%), a realized peak gain of 13.4 dBi, and an efficiency higher than 89.2%.}}, author = {{Zhou, Changfei and Cheung, Sing Wai}}, issn = {{1548-5757}}, language = {{eng}}, number = {{3}}, pages = {{368--372}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Antennas and Wireless Propagation Letters}}, title = {{High Gain Windmill-shaped CP Antenna Using High-order Mode and Ground-edge Diffraction}}, url = {{http://dx.doi.org/10.1109/LAWP.2018.2789355}}, doi = {{10.1109/LAWP.2018.2789355}}, volume = {{17}}, year = {{2018}}, }