期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 68, 期 3, 页码 1238-1248出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2019.2925280
关键词
Electrically small antennas (ESAs); Huygens dipole antennas (HDAs); metamaterial-inspired antennas; pattern-reconfigurable antennas; ultralow-profile antennas
资金
- Graduate Scientific Research and Innovation Foundation of Chongqing, China [CYB18069]
- Funding of the Innovative Leading Talents in Science and Technology of Chongqing [CSTCCXLJRC201705]
- Funding of the Leading Research Talent Cultivation Plan of Chongqing University [cqu2017hbrc1A08]
- Funding of the Young Backbone Teachers in Colleges and Universities of Chongqing [0307001104102]
- Fundamental Research Funds for the Central Universities [2018CDQYTX0025]
- Australian Research Council [DP160102219]
An ultralow-profile, electrically small, pattern-reconfigurable metamaterial-inspired Huygens dipole antenna is presented that operates near 1.5 GHz. The design incorporates two pairs of magnetic and electric near-field resonant parasitic (NFRP) elements and a reconfigurable driven element. A pair of p-i-n diodes is integrated into the driven element to enable the antenna pattern reconfigurability. By switching the ON/OFF states of the diodes, the antenna can realize two independent unidirectional endfire radiating states whose peaks point in antipodal directions and a bidirectional endfire radiating state. The measured results, in good agreement with their simulated values, demonstrate that although the antenna is electrically small (ka = 0.98) and ultralow profile (0.0026 lambda(0)), it can realize uniform peak realized gains (RGs) of similar to 5.4 dBi, front-to-back ratios (FTBRs) of similar to 13.3 dB, and radiation efficiencies of (REs) similar to 85% in its two oppositely directed endfire states, and a RG of 3.55 dBi and RE of similar to 87% in its bidirectional endfire state.
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