volume | PIER Journals

Abstract

A novel full W-band in-line waveguide-to-suspended stripline transition based on reversed single-sided fin-line structure is proposed. To achieve wideband mode conversion and impedance matching, a combination of an asymmetric antipodal fin-line and a reversed single-sided fin-line structure is employed. The electromagnetic (EM) wave undergoes a mode transition from TE10 mode to quasi-parallel plate waveguide(Q-PPW) mode through the asymmetric antipodal fin-line. Subsequently, the mode transforms into suspended stripline mode due to the reversed single-side fin-line structure. The proposed in-line transition achieves a wide bandwidth through a simplified structural design. To assess the performance of the proposed design, a back-to-back in-line transition operating at the W-band is fabricated and measured. The measured results of the back-to-back structure demonstrate that the reflection coefficient is better than -13 dB, and the insertion loss is less than 0.54 dB across the entire W-band (75-110 GHz). The advantages of the proposed transition, such as wide bandwidth and simple structure, render it highly promising for advanced millimeter-wave circuits and systems.

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Dr. Baochen Du

Dr. Yang Chen

Dr. Hongfu Meng