期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 20, 期 8, 页码 1463-1467出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2021.3087479
关键词
Baluns; Switches; Antenna measurements; Antenna radiation patterns; PIN photodiodes; Gain; Antennas; Endfire antenna; feeding structure; pattern-reconfigurable antenna; switchable dual balun
资金
- National Natural Science Foundation of Jiangsu [BK20201438]
- Natural Science Research Project of Jiangsu Provincial Institutions of Higher Education [20KJA510002, 20KJB510010]
- Postgraduate Research and Practice Innovation Program of School of Information Science and Technology, Nantong University [NTUSISTPR21_001]
The letter proposes a microstrip switchable dual balun using a symmetrical three-coupled-line structure, which enables three-status operation for designing a pattern-reconfigurable endfire antenna. The simulated and measured results show good agreement, with peak gains reaching 5.8 dBi for directional statuses and 2.7 dBi for bidirectional status.
This letter proposes a microstrip switchable dual balun using a symmetrical three-coupled-line structure, which is used as a feeding network for designing a pattern-reconfigurable endfire antenna. By adding p-i-n diodes to the ends of the coupled quarter-wavelength lines, the proposed balun enables three-status operation while it has compact size and simple configuration. Based on this, a pattern-reconfigurable endfire antenna is designed, fabricated, and measured. Good agreement between the simulated and measured results can be observed. The peak gain of two directional statuses reaches 5.8 dBi and the front-to-back ratio (F/B) is more than 18 dB. Meanwhile, the peak gain of bidirectional status reaches 2.7 dBi and the F/B is less than 0.5 dB.
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