Dual-Ridge Gap Waveguide-Based Antenna With Diverse Beam Capabilities

Shi, Yan; Wang, Hua Jie

doi:10.1109/ojap.2022.3190225

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…By regarding the unit cell as a two-port network, we can establish a relationship between the voltages and currents present on each side of the nth unit cell within the periodic structure. This relationship can be expressed using the ABCD matrix, which encapsulates the transmission characteristics of the unit cell [1,4].…”

Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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In this paper, a pioneering and innovative approach for multiple-band ridge gap waveguide (MB-RGW) based narrowband bandpass filter for satellite applications is presented. The MB-RGW represents a significant and emerging technological advancement within the domain of microwave and millimeter-wave engineering. It comprises a periodic structure that enables the propagation of electromagnetic waves along its axis. We have provided a detailed analysis of the MB-RGW, which includes its design, simulation, and experimental results. A prototype filter, designed according to specifications, was successfully produced with a fabricated circuit area measuring 42.25 mm×76.25 mm× 8.8 mm. We demonstrate that the MB-RGW can achieve multiple bands with a single structure, making it a versatile and efficient device for a wide range of applications. We also present a detailed analysis of the factors that affect the performance of the MB-RGW, including the geometry of the ridge and the spacing between ridges. Our experimental results show that the MB-RGW can achieve high levels of attenuation and isolation, making it a promising candidate for the use in microwave and millimeterwave circuits and systems. The experimental results show S 11 smaller than −20 dB over relative bandwidths, and S 21 has a maximum of −0.07 dB. The proposed filter demonstrates four resonances at frequencies of 10.6 GHz, 12.6 GHz, 14.7 GHz, and 17.1 GHz, catering to mobile and fixed radio locations as well as satellite applications. It exhibits a fractional bandwidth of 0.44% at 3 dB in the X-Band and approximately 0.57% to 0.61% at 3 dB bandwidth in the Ku-band. The filter offers a compact, cost-effective, and easily implementable solution for satellite communication systems, including space operations, earth exploration, satellite TV broadcasting, and fixed satellite services (FSS). Overall, this paper provides a comprehensive overview of the MB-RGW and its potential for the use in a range of applications.

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Section: Unit Cell Designmentioning

confidence: 99%

Highly-selective Ridge Gap Waveguide Based Filters for Multi-band Satellite Applications

Chhasatia¹,

Chaudhari²,

Patel³

2023

PIER M

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H-plane gap-RGW horn antenna with very low side lobe level

Mohammadpour,

Mohajeri,

Parizi

2024

Sci Rep

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This paper presents and applies a new concept of gap-RGW to develop a new configuration for RGW H-plane horn antennas. The proposed antenna is fully metallic and can generate a very low side-lobe level along with a flat gain response over a reasonable bandwidth, which is one of the advantages of this antenna. A prototype of the presented structure is designed and fabricated which provides the impedance bandwidth (S11 < − 10 dB) of about 25% with SLL < − 20 dB and 2 dB gain variation over the operating bandwidth.

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