Wideband Circularly Polarized Phased Array Antenna System for Wide Axial Ratio Scanning

Kim, Jeong-Wook; Chae, Soo-Chang; Jo, Hye-Won; Yeo, Tae-Dong; Yu, Jong‐Won

doi:10.1109/tap.2021.3078509

Cited by 27 publications

(14 citation statements)

References 26 publications

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“…The high purity of flat panel antennas has hardly been approached in the past, as also recently pointed out by other authors [1]. There are different methods to address the problem, as seen in the introductory part.…”

Section: A Coffee-bean Radiating Elementmentioning

confidence: 99%

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Single-Layer Sequential Rotation Network in Gap Waveguide for a Wideband Low-Profile Circularly Polarized Array Antenna

et al. 2022

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A low-profile circularly-polarized sequential rotation fed 4×4 array antenna working in the Ka-band from 27.5 GHz to 31 GHz is presented. The particularity of the antenna lies in its single-layer sequential rotation feed network implemented in a bed of nails using a combination of groove and ridge gap waveguides. The basic radiating element is one slot loaded by a simple coffee-bean-shaped parasitic element on top. Experimental results show an antenna matching below −10 dB in a 13.6% bandwidth and a measured axial ratio below 1.3 dB in the desired band.

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Section: A Coffee-bean Radiating Elementmentioning

confidence: 99%

“…C IRCULAR polarization (CP) purity in planar antennas is a challenge often pursued because of its multiple applications [1], [2]. In the particular context of the Kaband, it is especially desirable to have an antenna with good polarization purity apart from other features, such as low weight, low profile, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Single-Layer Sequential Rotation Network in Gap Waveguide for a Wideband Low-Profile Circularly Polarized Array Antenna

et al. 2022

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“…Existing CP beam scanning antennas mainly include sequential rotation CP spiral antenna [4], dielectric resonator antenna [5], switched-beam array antenna with Butler matrix [6], space-fed multi-beam reflectarray [7], reconfigurable patch array antenna [8], frequency scanning leaky wave antenna [9], and amplitude-and phasecontrolled dual-polarized antennas [10]. The above CP beam scanning antennas have achieved promising results in some respects, yet leave a lot to be desired in terms of wideband scanning, particularly in the scanning AR bandwidth and angle range in all scanning planes.…”

Section: Introductionmentioning

confidence: 99%

A Wideband Scanning Circularly Polarized Array Antenna Based on the Shorted Transmission Line Model

et al. 2022

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Due to the huge potential of application in the communications, electronic jamming, and radar fields, circularly polarized (CP) array antennas with wide axial ratio (AR) scanning performance at wide frequency bandwidth have received great attention. A wideband scanning CP planar array antenna built by new, tightly coupled dipole array (CP-TCDA) elements, which have achieved promising results in terms of both scanning AR bandwidth and angle range in all scanning planes, is presented in this paper. Based on the shorted transmission line model, a CP-TCDA element arranged along the ±45° direction is constructed, which can shift the middle-frequency scanning blind zone out of band and thus obtain a wideband scanning AR bandwidth. Furthermore, the proposed CP-TCDA element adopts four shorting pins and four square parasitic strips, which improve wide-angle CP performance for xz-plane and diagonal-plane scans, respectively. An 8×8 left-handed CP planar array antenna based on the proposed CP-TCDA elements is designed and prototyped. The results show that the array antenna is able to operate over a 3:1 (4-12 GHz) overlapping bandwidth, and it meets the requirements of AR < 3 dB and active VSWR < 2.9 within a ±45° scanning angle range.INDEX TERMS array antenna, circularly polarized, phased antenna, scanning antennas

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“…A CP reconfigurable transmitarray with beam‐steering capabilities of ±60° was designed [8] and obtained a measured 2 dB AR bandwidth of 14.6%. A CP phased array antenna with an AR control scheme was proposed [9]. Although the measured AR of array was less than 2 dB from 0° to ±57°, this scheme added approximately double the number of low noise amplifiers and digital phase shifters.…”

Section: Introductionmentioning

confidence: 99%

“…Beam scanning arrays have been widely used in military and civilian fields due to their unique advantages, such as their fast scanning and flexible beam pointing. To meet large scanning angle coverage and CP requirements at the same time, it is particularly important to study beam scanning CP arrays with wideband, and wide-angle scanning capabilities [6][7][8][9][10][11][12][13]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

A wide‐angle beam scanning circularly polarized, tightly coupled dipole array based on two‐layer parasitic ring structure elements

Zhao

Lei

Yi-Jun

et al. 2022

IET Microwaves Antenna & Prop

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In this paper, a wide-angle beam scanning circularly polarized (CP) phased array element, which consists of a concentric tightly coupled dipole array (TCDA) element with a twolayer parasitic ring structure and a wideband 90°phase shifter, is proposed. To solve the problem of the scanning blindness zone caused by a concentric layout, the grounded coupling patch for the traditional TCDA element is 'split' into a combination of a grounded parasitic ring and coupling patch. This combination structure can not only suppress the in-band common-mode resonance but also destroy the scanning blind zone mode formed by the dipole and grounded coupling patch. In addition, a two-layer parasitic ring structure is introduced to obtain a wider axial ratio (AR) beamwidth relative to a single-layer structure, so a wide-angle beam scanning AR is realized. An 8 � 8 left-handed CP planar array based on the proposed wide-angle beam scanning CP elements is designed and prototyped. Results show that the array can operate over a 3.2:1 (3.75-12.0 GHz) overlapping bandwidth, meeting an AR < 3 dB in the main beam and an active voltage standing wave ratio <2.8 within a �60°angle scanning range.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Wideband Circularly Polarized Phased Array Antenna System for Wide Axial Ratio Scanning

Cited by 27 publications

References 26 publications

Single-Layer Sequential Rotation Network in Gap Waveguide for a Wideband Low-Profile Circularly Polarized Array Antenna

Single-Layer Sequential Rotation Network in Gap Waveguide for a Wideband Low-Profile Circularly Polarized Array Antenna

A Wideband Scanning Circularly Polarized Array Antenna Based on the Shorted Transmission Line Model

A wide‐angle beam scanning circularly polarized, tightly coupled dipole array based on two‐layer parasitic ring structure elements

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