Design and simulation of ultra-wideband double-ridged horn antenna

Xu, Hengfei; Zhou, Yang; Li, En; Liu, Hongxiu; Wang, Qing; Zhong, Ziming

doi:10.1109/icmmt.2010.5525139

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…Pyramidal and semi-pyramidal cavities also evolved from of the traditional flare and wedge design (Figure 2, top right) [13,23,31,32]. These designs also allow wideband operation without pattern deterioration.…”

Section: Design Of the Coax To Ridged Waveguide Launchermentioning

confidence: 99%

Compact 0.5–18 GHz double‐ridged guide horn antenna

Jacobs

Odendaal

Joubert

2021

IET Microwaves Antenna & Prop

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Broadband double‐ridged guide horn (DRGH) antennas are extensively used in antenna measurement and electromagnetic compatibility and interference testing, especially the 1–18 GHz DRGH antenna which is widely accepted as a standard for this band. Certain deficiencies in the radiation patterns have been identified and corrected by several authors, but the use was still limited to the 1–18 GHz frequency band. The incorporation of absorber materials and lenses has resulted in horn antennas with wider bandwidths; however, this complicates the manufacturing process and restricts these designs to lower power applications. Simulated and measured results for a new 0.5–18 GHz (36:1) DRGH antenna are presented here. The wider bandwidth is made possible by a new cavity design and optimising the design of the other antenna sections to allow wideband operation without using a lens or absorber. The new design has double the bandwidth ratio and is very compact, with an aperture size of 26.4 cm × 15.2 cm; the aperture sides are less than 12% larger than the sides of the aperture of the conventional 1–18 GHz DRGH antenna (24.2 cm × 13.6 cm).

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Section: Design Of the Coax To Ridged Waveguide Launchermentioning

confidence: 99%

Compact 0.5–18 GHz double‐ridged guide horn antenna

Jacobs

Odendaal

Joubert

2021

IET Microwaves Antenna & Prop

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“…Although different ridge curvatures have been studied [22][23][24][25], most of them were generally based on exponential tapers with an additional linear term with slope. The general equation can be written as follows:…”

Section: Drha Designmentioning

confidence: 99%

Near‐constant beamwidth quadruple bandwidth double‐ridged horn antenna design

Isenlik

Yeğin²,

Barkana³

2019

IET Microwaves, Antennas & Propagation

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It is well known that the beamwidths of horn antennas are inversely proportional to frequency. Previous studies point to minimum ±12% beamwidth stability within a maximum of 2.5:1 bandwidth (BW) ratio. To extend this BW, a design methodology for broadband double‐ridged horn antenna (DRHA) is proposed and applied to 4.5–18 GHz frequency band. Firstly, a conventional DRHA is designed and studied to compare the beamwidth variation of wideband horn antennas. By explicitly addressing the shortcomings of conventional DRHA, DRHA is redesigned and near‐constant beamwidth DRHA is proposed using the modifications implemented on the sidewalls. The antenna utilises ridges to extend the frequency band, unlike other wideband constant beamwidth horns. The authors show that ridged horns, whose dimensions are appropriately designed and modified, can have stable beamwidths. Then, properly positioned curved pinwalls are designed to provide considerable improvement in H‐plane beamwidth constancy. Broadband double‐ridged waveguide‐to‐coaxial adapter is also designed for 50 Ω reference. The prototype is manufactured, and the measured antenna exhibits wideband characteristics with 30.9° ± 2.7° half power beamwidth in H‐plane over 4:1 BW ratio. This variation corresponds to ±8.7% beamwidth stability along with the target frequency band.

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“…Deficiencies in the radiation pattern above 12 GHz were exposed using ElectroMagnetic (EM) simulations [9][10][11] and led to renewed interest in the design of these antennas. Initially, the focus was on solving the pattern deterioration problem, which resulted in several improved designs [12][13][14][15][16][17][18][19][20]. Further work included manufacturing tolerance and sensitivity studies [21,22], extending the improvements to other frequency bands [23][24][25], and improvements in performance by investigating the ridge width, ridge profile, launcher cavity, and sidewalls [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Wideband 0.5–50 GHz double‐ridged guide horn antenna using coaxial‐to‐ridge waveguide launcher

Jacobs,

Odendaal,

Joubert

2023

IET Microwaves Antenna & Prop

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Ever‐increasing bandwidth requirements from various industries drive the need for the ever‐increasing bandwidth of antennas used for testing. Broadband Double‐Ridged Guide Horn (DRGH) antennas are used extensively in antenna measurement and ElectroMagnetic Compatibility/Interference (EMC/I) testing. The current state‐of‐the‐art broadband DRGH antennas reported in the literature for use in measurement applications cover bandwidth ratios as large as 36:1 (0.5–18 GHz). This paper presents the design and realisation of a DRGH antenna with a 100:1 bandwidth ratio (0.5–50 GHz). To achieve such a wide bandwidth, the ridge gap, width and feed were optimised, and a novel coaxial‐to‐ridge waveguide launcher section based on a typical Vivaldi antenna was developed. Backward radiation was reduced using an absorber‐filled cavity. A prototype DRGH antenna was manufactured using additive manufacturing, also referred to as 3D printing. Simulated and measured results obtained in an anechoic chamber are presented.

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Design and simulation of ultra-wideband double-ridged horn antenna

Cited by 9 publications

References 5 publications

Compact 0.5–18 GHz double‐ridged guide horn antenna

Compact 0.5–18 GHz double‐ridged guide horn antenna

Near‐constant beamwidth quadruple bandwidth double‐ridged horn antenna design

Wideband 0.5–50 GHz double‐ridged guide horn antenna using coaxial‐to‐ridge waveguide launcher

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