E- and H-Plane Constant Beamwidth Horn Antenna Over 4:1 Frequency Band
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ieee-Inst Electrical Electronics Engineers Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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.
Açıklama
Anahtar Kelimeler
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
Kaynak
Ieee Transactions On Antennas And Propagation
WoS Q Değeri
Q1
Scopus Q Değeri
Cilt
69
Sayı
6
