E- and H-Plane Constant Beamwidth Horn Antenna Over 4:1 Frequency Band

被引：4
作者：
Isenlik, Turker [1 ]
Yegin, Korkut [2 ]
Barkana, Duygun Erol [3 ]
机构：
[1] Sci & Technol Res Council Turkey, Sensor & Antenna Syst Dept, TR-41380 Kocaeli, Turkey
[2] Ege Univ, Dept Elect & Elect Engn, TR-35100 Izmir, Turkey
[3] Yeditepe Univ, Dept Elect & Elect Engn, TR-34755 Istanbul, Turkey
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2021年 / 69卷 / 06期
关键词：
Broadband antennas; Horn antennas; Bandwidth; Antenna radiation patterns; Wideband; Admittance; Slot antennas; Broadband antenna; constant beamwidth; corrugated double-ridged horn antenna (DRHA); stepped-shape slot; wideband corrugation; DESIGN; GAIN;
D O I：
10.1109/TAP.2020.3044384
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A wideband corrugation slot, called stepped-shape slot, is proposed in the design of E-plane corrugated double-ridged horn antenna (DRHA) with H-plane pin sidewalls to extend the constant beamwidth bandwidth (BW) of horn antennas. Closed-form expressions for the input admittance of the new slot are derived, and the BW is compared with the BWs of other conventional corrugations. The proposed slot presents wideband characteristics with a BW ratio of more than 4:1. The use of stepped-shape slot in a corrugated wall keeps the surface reactance capacitive over a relatively large frequency band. The H-plane sidewalls of the designed antenna are formed by curved pinwalls. The flare includes ridges to extend the frequency range, and the E-plane walls are corrugated with a wideband slot to improve the beamwidth constancy in elevation. Thus, constant beamwidth horn antenna (CBWHA) is obtained at both azimuth and elevation planes over the desired frequency band from 4.5 to 18 GHz. The measured performance of the proposed CBWHA reveals wideband characteristics with 31.0 degrees +/- 2.5 degrees H-plane and 37.4 degrees +/- 5.2 degrees E-plane half power beamwidths over 4:1 frequency range.
引用
收藏
页码：3578 / 3583
页数：6
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