Gysel Power Divider Realized by Ridge Gap Waveguide Technology

Nobandegani, Abbas Karimi; Hosseini, S. Esmail

doi:10.1109/access.2021.3079811

Cited by 9 publications

(3 citation statements)

References 31 publications

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“…These unequal power dividers are typically employed to lower the side lobes level of the array antenna [54], [88]. Furthermore, the GW technology has been used to design several other forms of power dividers or couplers, such as the Gysel power divider, rat-race couplers, and 3 dB hybrid couplers [67], [89]- [93]. Another essential microwave component for beamforming is the phase shifter.…”

Section: A Beamforming Circuitmentioning

confidence: 99%

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Yong¹,

Bagheri²,

Ven³

et al. 2023

Preprint

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<p>Interest in the mmWave and sub-THz bands for next-generation communication and radar systems is increasingly growing due to the available electromagnetic spectrum. This has led to an urgent need to develop low-loss and low-fabrication-cost technologies that perform well at these frequencies. The Gap Waveguide (GW) technology is an emerging and viable contender for the development of radio frequency passive components and antenna systems. The GW technology is based on the parallel-plate waveguide principle. According to Maxwell's equations, ideally, no wave propagates within a structure if the top plate consists of a perfect electric conductor (PEC) while the bottom plate is a perfect magnetic conductor (PMC), and the distance between the plates is less than a quarter wavelength. This PMC structure creates high surface impedance characteristics which provide cutoff to all propagating modes within the airgap. In practice, these magnetic conductors can be created artificially using an Electromagnetic Band Gap (EBG) structure. Based on this simple principle, considerable research and development of novel components with high performance has seen the light in the past decade. The purpose of this paper is to present an overview of current advancements in the design and technical implementations of GW-based antenna systems and components. Practical applications and the industry interest in the developments of the GW technology for mmWave and sub-THz applications have also been scrutinized.</p>

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Section: A Beamforming Circuitmentioning

confidence: 99%

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Yong¹,

Bagheri²,

Ven³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/ make it suitable for various applications [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17]. Recently, RGW-based components have been considered in various designs functioning as antenna array feed networks [11], couplers [13], [14], combiners [15], filters [16], [25], and power dividers [18], [19], [20].…”

Section: Introductionmentioning

confidence: 99%

Broadband Three-Section Branch-Line Coupler Realized by Ridge Gap Waveguide Technology From 12 to 20 GHz

Mahdavi,

Hosseini,

Shojaadini

2023

IEEE Access

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The novel ridge-gap waveguide (RGW) technology which uses an entire metal structure has various advantages at high frequencies, such as broad bandwidth, low loss, low sensitivity to manufacturing errors, and uncomplicated integration with passive and active components. In this paper, a broadband RGWbased three-section branch-line coupler in the frequency band of 12 to 20 GHz is proposed, simulated, and experimentally demonstrated. The proposed structure employs four short stubs at the branches with a quarter wavelength for impedance matching. Also, four steps have been added for better power division on the coupling branch lines. The proposed structure with WR62 transition shows low-loss, equal-power division, 90-degree with good impedance matching, and isolation in the frequency band of 12-20 GHz containing the Ku band, and, the measured results are in good agreement with the simulations. The introduced structure can be extended to an arbitrary broadband power divider/combiner, which can find various applications, such as in array antenna feed networks and solid-state power amplifiers. It can be redesigned for broadband, high-power, and low-cost millimeter-wave applications.INDEX TERMS Branch-line coupler, Ku band, ridge gap waveguide (RGW), return loss, insertion loss.

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“…GPDs can handle more power by using grounded resistors, which transfer heat to the ground. A number of works have been published on Gysel power dividers [20][21][22][23], but these designs have a low ratio of frequency bandwidth. Figure 1 shows the structure of conventional Wilkinson and Gysel Power dividers.…”

Section: Introductionmentioning

confidence: 99%

A Novel Planar Power Divider/Combiner for Wideband High-Power Applications

Tadayon

Ardakani

Karimian

et al. 2022

Eng

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This manuscript presents a novel wideband power divider with high power handling capability. The power handling capacity of the power divider is increased through the use of grounded 50 ohm loads. The full circuit analysis of a single section of the proposed structure is presented utilizing even and odd modes and ABCD matrices. The final designed sections are cascaded and extended to achieve a high bandwidth response for the target of X-band. The structure was designed and optimized with the method of moments based on ADS software and simulated in HFSS for 3D full-wave analysis. A prototype module was fabricated and measured for experimental validation. The simulation results were confirmed by through measurements for the frequency band of 7–12 GHz (more than 52% fractional bandwidth). A divider such as the proposed one has a significantly higher power handling capacity than Wilkinson, as well as a wider frequency bandwidth than Gysel power dividers. As a wideband high-power power divider, the proposed device is ideal for high-data rate radar or satellite applications.

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Gysel Power Divider Realized by Ridge Gap Waveguide Technology

Cited by 9 publications

References 31 publications

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Broadband Three-Section Branch-Line Coupler Realized by Ridge Gap Waveguide Technology From 12 to 20 GHz

A Novel Planar Power Divider/Combiner for Wideband High-Power Applications

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