A microstrip‐fed cavity‐backed circularly polarized horn antenna

Seong, Nak-Seon; Park, Seong‐Ook

doi:10.1002/mop.21952

Cited by 13 publications

(5 citation statements)

References 4 publications

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“…To generate circularly polarized (CP) waves for these antennas, numerous approaches have been proposed in the past, and they can be generally categorized into three types. One simple way is to use two feeding ports for a waveguide supporting degenerate modes [4]. The orthogonal components required by CP radiation come from the degenerate modes, and the 90-degree differential phase is provided by an external phase shifter.…”

Section: Introductionmentioning

confidence: 99%

3-D Printed Circularly Polarized Open-Ended Waveguide Antenna Array Based on an In-Built Antipodal Exponential Groove Polarizer

Long

Zhang

2023

International Journal of RF and Microwave Computer-Aided Engine

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This paper presents a novel 3-D-printed circularly polarized (CP) open-ended waveguide (OEW) antenna array. It aims to provide a lightweight scheme for OEW array design and concurrently address the high fabrication complexity problem of conventional OEW arrays. To realize these, the proposed design adopts dielectric 3-D printing technology to build the main body of the array and employs electroplating to form the waveguide walls. To attain CP radiation, an in-built antipodal exponential groove polarizer is proposed and applied to a square waveguide. With the perturbation of the grooves, degenerate modes T E 10 and T E 01 can be excited simultaneously, and their differential phase can be 90 degrees, resulting in CP radiation. Moreover, a novel matching cube based on effective medium theory (EMT) is proposed for the antenna to mitigate the reflections at the waveguide aperture and therefore realize good impedance matching. To validate the design idea, prototypes for a single element and a 2 × 2 array were fabricated and measured. Experimental results show that their weights are 15 and 76 grams, and their axial ratio bandwidths (ARBWs) are 16% (5.45-6.4 GHz) and 11.1% (5.52-6.17 GHz), respectively.

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Section: Introductionmentioning

confidence: 99%

3-D Printed Circularly Polarized Open-Ended Waveguide Antenna Array Based on an In-Built Antipodal Exponential Groove Polarizer

Long

Zhang

2023

International Journal of RF and Microwave Computer-Aided Engine

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“…To generate circularly polarized (CP) radiation, various methods have been proposed for this kind of antennas. One simple way is to adopt two feeding lines that are perpendicular to each other to excite the orthogonal modes in the waveguide and use external phase shifting circuit to obtain 90° differential phase 4 . However, this method may lead to extra feeding loss and the feeding circuit is complicated.…”

Section: Introductionmentioning

confidence: 99%

“…One simple way is to adopt two feeding lines that are perpendicular to each other to excite the orthogonal modes in the waveguide and use external phase shifting circuit to obtain 90 differential phase. 4 However, this method may lead to extra feeding loss and the feeding circuit is complicated. Other than this, one more common approach is to use polarizers to convert the linearly polarized waves into the CP ones.…”

Section: Introductionmentioning

confidence: 99%

Additively manufactured circularly polarized open‐ended waveguide antenna array based on a linearly tapered double‐ridge polarizer

Long

Peng

Chu

2022

Int J RF Mic Comp-Aid Eng

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This article presents a novel circularly polarized (CP) open‐ended waveguide antenna array based on additive manufacturing technology. It is a one‐dimensional four‐element linear array and has a single piece configuration. Its main body is made of dielectric material and partial surfaces are coated by copper films through electroplating to form necessary metal components. Regarding to each element, it is based on a circular waveguide and employs an inbuilt linearly tapered double‐ridge structure to act as a polarizer. To design such a polarizer, different shaped ridges are analyzed and a design evolution is presented and discussed. Compared to the conventional designs, the proposed element and array can avoid structure partitioning during the processing, and effectively reduce the fabrication difficulty and complexity, meanwhile, attain light weights. To validate the design idea, two prototypes corresponding to the element and the array are fabricated and tested. Experimental results indicate that their axial ratio bandwidth (ARBW) are 22% (8.9–11.1 GHz) and 11.8% (9.6–10.8 GHz), and the gain are 6.6 ± 1.1 and 10.6 ± 0.6 dBic, respectively. The proposed element and array could be potentially applied for satellite and other CP communication systems.

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“…Although recently millimeter-wave (mm-wave) frequencies are becoming more and more attractive for high-speed wireless communications [7,8], only handful of mm-wave CBAs are published [9,10]. Actually, they are one of the most suitable candidates for mm-wave applications due to their many advantages.…”

Section: Introductionmentioning

confidence: 99%

Broadband millimeter‐wave composite cavity backed antenna with bowtie exciter

2013

Micro & Optical Tech Letters

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A wideband cavity-backed antenna is proposed in this article. For performance improvement, an elliptical composite cavity is adopted and it is excited by a rounded bowtie dipole through a transition from a microstrip line to a parallel strip line. To reduce the fabrication errors, the antenna aperture is designed to be over 0.84 wavelength at the lowest operating frequency, and the exciter is built on a substrate along with the transition by the printed circuit board (PCB) techniques. Measurements show that the antenna can be operated in a frequency band of 30.6-70 GHz for SWR 2 and stable radiation patterns.

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A microstrip‐fed cavity‐backed circularly polarized horn antenna

Cited by 13 publications

References 4 publications

3-D Printed Circularly Polarized Open-Ended Waveguide Antenna Array Based on an In-Built Antipodal Exponential Groove Polarizer

3-D Printed Circularly Polarized Open-Ended Waveguide Antenna Array Based on an In-Built Antipodal Exponential Groove Polarizer

Additively manufactured circularly polarized open‐ended waveguide antenna array based on a linearly tapered double‐ridge polarizer

Broadband millimeter‐wave composite cavity backed antenna with bowtie exciter

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