A Novel Design Technique for mm-Wave Mismatch Terminations

Elsaadany, Mahmoud; Ali, Mohamed Mamdouh M.; Shams, Shoukry I.; Denidni, Tayeb A.; Gagnon, Ghyslain

doi:10.1109/tmtt.2020.3048149

Cited by 4 publications

(2 citation statements)

References 18 publications

(16 reference statements)

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“…Millimeter-wave (mm-wave) frequency band starting from 30 to 300 GHz is a good candidate for the proposed purpose. mm-wave spectrum with massive available bandwidth is a promising technology for the next generation to boost the data-rate transmission on the order of multigigabit/s and triumph the bandwidth shortage at saturated traditional microwave spectrum 3 , 4 . This evolution of wireless data communications from today's microwave and lower frequency bands to mm-wave bands has created challenges and opportunities for mobile service designers 5 – 7 .…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model

Mousavirazi

Ali

Gheisanab

et al. 2022

Sci Rep

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In this paper, a new method to facilitate the design of Printed Ridge Gap Waveguide (PRGW) structures is introduced. One of the main difficulties in designing such structures is related to their simulation process which is really time and energy-consuming. Therefore, a suitable boundary condition is considered to bring about the primary structure without involving the bed of nails or mushroom unit cells. Using this technique, a wideband PRGW 3 dB hybrid double-box coupler is designed to serve in mm-wave frequencies at a center frequency of 30 GHz, which can be deployed for the next generation of mobile communication. The designed coupler provides a wide matching and isolation bandwidth with low output amplitude imbalance, which is unique in comparison with current couplers. The prototype of the proposed coupler is fabricated and measured where the simulation and measurement results show a good agreement indicating the strength of the proposed method in PRGW structure design as well. The measured results show the couplers achieve better than 10-dB return loss and isolation over the frequency range from 25 to 40 GHz (46% BW) with the power-split unbalance and phase error within ± 1 dB and ± 5°, respectively. In addition, square mushrooms are chosen here to satisfy the high impedance surface. Not only do they bring about larger stop bandwidth, but also their configuration facilitates the arrangement of them around the coupler. The proposed design has superb characteristics such as low profile, low loss, and easy integration with microwave circuits and systems that can be suitable for designing mm-wave beamforming networks.

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Section: Introductionmentioning

confidence: 99%

Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model

Mousavirazi

Ali

Gheisanab

et al. 2022

Sci Rep

Self Cite

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mentioning

confidence: 99%

A Novel Low‐Loss Planar PRGW Crossover Design for 5G Applications

et al. 2023

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With the rapid move toward 5G and 6G technologies, millimeter-wave (mm-wave) wireless systems have attracted more and more consideration because of their huge unlicensed bandwidth that provides multi-gigabit per second data rates (Elsaadany et al., 2021;Farahani et al., 2017;Rashidian et al., 2022). However, this evolution of wireless communications to high-frequency bands is limited due to the high propagation loss and atmospheric absorption (Quan et al., 2022). Beam-switching antenna arrays are one of the good approaches to overcome these limitations and enhance coverage areas for mm-wave communication applications (Ali, Al-Hasan, Ben Mabrouk, & Denidni, 2022;Razi & Rezaei, 2020). Among all the various technologies that can be applied to design beam-switching networks, a Butler matrix network has widely been used due to the simplest configuration compared to other matrix-based beam-switching networks (Mousavi & Rezaei, 2019;. Crossovers that are considered 0-dB hybrid couplers are one of the fundamental components of Butler matrix network designs (Wong & Cheng, 2011). The ideal crossover has four ports to pass through two independent crossing signals with a high amount of isolation between the two paths while maintaining a zero insertion loss (Cao et al., 2020;Chu & Tang, 2018). Several research works have proposed various configurations of crossovers for example, microstrip line (MSL) (Xue et al., 2022), rectangular waveguides (RWG) (Ohta et al., 2005), and stripline (Wight et al., 1976). However, dielectric losses represent a huge drawback at high frequencies and lead to a critical problem for microstrip and stripline designs (Razi et al., 2015). Although RWGs have a lower attenuation, they are bulky and suffer from the inability to integrate with monolithic microwave integrated circuits, especially at mm-wave . Recently, substrate-integrated waveguide (SIW) and ridge-gap waveguide (RGW) technologies as one of the most recent guiding structures have significantly attracted the attention of the research community to address the loss problems at mm-wave. In Diman et al. (2021), Guntupalli et al. (2012, various types of SIW-based structures have been developed. A SIW crossover structure by cascading two 3-dB hybrid couplers with 16.6% bandwidth at 35 GHz has been designed in Guntupalli et al. (2012). Using this technique yields a large physical area. In Cao et al., 2020 and, a compact two-layer crossover based on SIW and stripline techniques at 26 GHz has been presented to miniaturize the size of the crossover but suffers from complex design. RGW and printed RGW (PRGW) are other promising technologies suitable for implementing high-frequency components (Afifi & Sebak, 2020). Compared with the SIW, the PRGW structures have better performance and simpler designs with minimal transmission losses at the mm-wave

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Design methodology for high‐performance low‐cost microstrip termination load for mmWave applications

Azari,

Skrivervik,

Aliakbarian

2023

Electronics Letters

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Millimetre wave (mmWave) has been a popular research topic in recent years. Termination loads are useful for RF components and integrated circuits. Commercially available terminators are expensive and not easily applicable for integration to MMICs. In this letter, a wideband, high‐performance, and cost‐effective microstrip termination load is proposed based on the combination of a printed monopole antenna and an absorber sheet. The results show an excellent matched termination between 20 and 67 GHz that can be used as integrated with microstrip lines in RF circuits and MMICs and as loaded dummy ports for test and measurements for mmWave applications. The proposed high‐quality termination is compact and cost‐effectively competitive with commercial products.

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A Novel Design Technique for mm-Wave Mismatch Terminations

Cited by 4 publications

References 18 publications

Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model

Analysis and design of ultra-wideband PRGW hybrid coupler using PEC/PMC waveguide model

A Novel Low‐Loss Planar PRGW Crossover Design for 5G Applications

Design methodology for high‐performance low‐cost microstrip termination load for mmWave applications

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