A New Method for Reducing the Input Impedance of the Archimedean Spiral Antenna

Zhou, Yang; Huang, Jingjian; Wu, Weiwei; Yuan, Naichang

doi:10.2991/ceie-16.2017.91

Cited by 2 publications

(2 citation statements)

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“…This analysis is restricted to avoid unintended resonance modes while having a relatively small antenna diameter (α = 45 • ), and a comparative study of various expansion rates (τ = 1.238, 1.322, 1.496) is included [15], [31]. Initially, to reduce the input impedance, the parallel radiator structure is applied to the four-arm sinuous antenna [30].…”

Section: A Parallel Radiator Structurementioning

confidence: 99%

See 1 more Smart Citation

Four-Arm Sinuous Antenna With Low Input Impedance for Wide Gain Bandwidth

Kim

Park

Kim³

et al. 2022

IEEE Access

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An improved method of reducing the input impedance of a four-arm sinuous antenna is demonstrated for a wide gain bandwidth. The proposed antenna has a dual-linear polarized response for electronic support measures (ESM) systems and is designed with a planar substrate. The structure for reducing the input impedance is developed based on the transmission and coupled line theory and is shown to be in excellent agreement with theoretical predictions. The proposed antenna achieves an impedance bandwidth in the range of 0.45-6 GHz with a reference impedance of 100 . Simulations for comparison according to the difference in input impedance of designed antennas with feeding structures are also presented. Finally, the performance of the fabricated antenna with wideband balun is verified by measuring co-and cross-polarization radiation patterns. As a result, the proposed antenna achieves a wide gain bandwidth (>2.5 dBi) and a cross-polarization isolation (>−13 dB) of more than 12:1 in the frequency range over 0.6 GHz, which can be used in ESM systems.INDEX TERMS Four-arm sinuous antenna, low input impedance, electronic support measures, wide gain bandwidth.

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Section: A Parallel Radiator Structurementioning

confidence: 99%

“…They are unsuitable for a sinuous antenna with a non-uniform arm width. Another approach to overcome these problems is the parallel radiator structure applied only to the Archimedean spiral antenna [30]. The parallel resistance synthesis principle is used in this structure to reduce the input impedance.…”

Section: Introductionmentioning

confidence: 99%