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

Mahdavi, Parisa; Hosseini, S. Esmail; Shojaadini, Pedram

doi:10.1109/access.2023.3275084

Cited by 2 publications

(1 citation statement)

References 33 publications

(56 reference statements)

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“…The initial designs involved the use of EBGs, which required at least two rows of pins along the transmission line paths to minimize electromagnetic field leakage. Many devices and mmWave components were manufactured utilizing these pin-based unit cells, such as bandpass filters [8], D-band slot antenna array [9], horn antennas [10], Luneburg antennas [11], and other gap waveguide-based components [12][13][14][15][16][17][18]. However, as mentioned in [7], the disadvantage of manufacturing these nails or pins was the complexity of producing them on the mm and µm scale.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Gliding Walled Multilayer Waveguides

Shah Syed,

Yu,

Yao

et al. 2024

Electronics

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This article suggests a new waveguide design that utilizes a “walled” architecture. Instead of relying on conventional gap waveguide structures to create electronic bandgaps and prevent field leakage, the proposed design introduces a “walled” guiding mechanism. This technique preserves transmission while maintaining the multilayer approach and eliminates the need for nails or chemical bonds to attach the layers. Simulations were carried out in the W-band (75–110 GHz) and D-band (110–170 GHz) using several metals, and measurements were performed in the W-band using aluminum. The simulation results show that the reflection coefficient was less than −40 dB over the entire D-band. At the same time, the average insertion loss was around 0.0054 dB/mm and around 0.0065 dB/mm for silver and gold, respectively. Similarly, the reflection coefficient was less than −45 dB over the 75–110 GHz range, with an average insertion loss of 0.0018 dB/mm for silver and 0.003 dB/mm for gold, respectively. The aluminum model’s reflection coefficient was less than −35 dB, and the average insertion loss was 0.0035 dB/mm. The experimental results achieved a reflection coefficient of less than –30 dB and the average transmission coefficient was −0.2 dB, with an insertion loss of 0.002 dB/mm. The simple stacking ability of the weightless walled metal plates and easy fabrication makes the proposed transmission line a promising technology in mmWave and Terahertz applications.

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