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- W3035648781 abstract "A novel gain/bandwidth enhanced leaky-wave microstrip line antenna with circular polarisation (CP) is proposed. Different from common leaky-wave antennas with an open, short or resistive termination, this antenna consists of a leaky-wave rampart-line antenna terminated with a CP patch radiator. The energy from the feeding point is first radiated by the rampart-line antenna, while the remaining part is radiated through the CP patch element. As a result, the size of the leaky-wave part can be reduced. The resulting size of this antenna is only 1.6 × 1.6 λ 2.4G (λ 2.4G is free space wavelength at 2.4 GHz). Energy loss caused by the resistive termination is avoided, so that high efficiency is achieved – higher than 85% within the whole band. By introducing slight CP centre frequency difference between the patch and rampart antenna, two CP resonances were generated and the 3 dB axial ratio (AR) bandwidth is substantially broadened. Measured AR bandwidth is 9.9% (2.30–2.54 GHz). Its − 10 dB impedance bandwidth is 2.25 GHz to higher than 3 GHz, and peak gain is 13.2 dBic. The proposed antenna has a fully used radiation aperture, achieving a favourable performance, such as wide bandwidth, high gain, and a relatively stable (less tilted) boresight radiation." @default.
- W3035648781 created "2020-06-19" @default.
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- W3035648781 date "2020-07-07" @default.
- W3035648781 modified "2023-10-14" @default.
- W3035648781 title "Circularly polarised microstrip line leaky‐wave antenna terminated with patch" @default.
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- W3035648781 doi "https://doi.org/10.1049/iet-map.2020.0330" @default.
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