A Low-Profile Broadband Circularly Polarized mmWave Antenna With Special-Shaped Ring Slot
| Autor: | Changhong Zhang, Chen Huakang, Shao Yu, Zhang Zhizhong, Yajing Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
business.industry Axial ratio Bandwidth (signal processing) Impedance bandwidth 020206 networking & telecommunications 02 engineering and technology Microstrip antenna Optics Broadband 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Broadband antennas Electrical impedance Circular polarization |
| Zdroj: | IEEE Antennas and Wireless Propagation Letters. 18:1492-1496 |
| ISSN: | 1548-5757 1536-1225 |
| DOI: | 10.1109/lawp.2019.2920875 |
| Popis: | A single-feed broadband circularly polarized microstrip antenna operating in millimeter-wave band is proposed. An Archimedean spiral radiator is used to realize circular polarization. By adding a special-shaped ring-slot structure with two stubs connecting the inner patch to the outer ground, the radiating direction, bandwidth, and axial ratio (AR) of the proposed antenna can be significantly improved. The antenna prototype is fabricated, and its performance is evaluated. Measured results show that its impedance bandwidth is 13 GHz from 21.1 to 34.1 GHz (46.43% referring to 28 GHz). The axial-ratio bandwidth is 8.35 GHz from 23.85 to 32.2 GHz (29.82% referring to 28 GHz). The gain at 28 GHz is 6.49 dBi. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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