A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications

Yuan, Bin; Du, Qing; Hao, Chengxiang; Zhao, Yan; Yu, Zhongjun

doi:10.3390/mi14010052

Open AccessArticle

A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications

by

Bin Yuan

^1,2

,

Qing Du

³,

Chengxiang Hao

¹,

Yan Zhao

¹ and

Zhongjun Yu

^1,2,*

¹

Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China

²

School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100190, China

³

School of Information and Communication Engineering, Communication University of China, Beijing 100024, China

^*

Author to whom correspondence should be addressed.

Micromachines 2023, 14(1), 52; https://doi.org/10.3390/mi14010052

Submission received: 12 December 2022 / Revised: 20 December 2022 / Accepted: 24 December 2022 / Published: 25 December 2022

(This article belongs to the Special Issue Novel Developments in Waveguides and Antennas)

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Abstract

In this paper, a novel wideband transition from a laminated waveguide (LWG) to an air-filled rectangular waveguide (RWG) is proposed for millimeter-wave integration solutions based on multilayer low-temperature co-fired ceramic (LTCC) technology. The integrated transition cavity is divided into several resonators by introducing five grounded via holes. Due to the magnetic wall existing in the symmetry plane, the equivalent circuit of the proposed transition can be simplified as a three-pole filter model to explain the working mechanism with wideband performance. A W-band integrated LWG-to-RWG transition is designed as an example using LTCC technology. Two back-to-back prototypes with different lengths are fabricated and measured. A measured 25.7% bandwidth from 76 GHz to 101 GHz can be achieved for return loss better than 14 dB. The average insertion loss of a single transition is about 0.5 dB. The compact structure and wideband performance give it potential in high-density millimeter-wave and terahertz packaging.

Keywords: air-filled rectangular waveguide; laminated waveguide; low-temperature co-fired ceramic (LTCC); transition; W-band; wideband

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MDPI and ACS Style

Yuan, B.; Du, Q.; Hao, C.; Zhao, Y.; Yu, Z. A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications. Micromachines 2023, 14, 52. https://doi.org/10.3390/mi14010052

AMA Style

Yuan B, Du Q, Hao C, Zhao Y, Yu Z. A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications. Micromachines. 2023; 14(1):52. https://doi.org/10.3390/mi14010052

Chicago/Turabian Style

Yuan, Bin, Qing Du, Chengxiang Hao, Yan Zhao, and Zhongjun Yu. 2023. "A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications" Micromachines 14, no. 1: 52. https://doi.org/10.3390/mi14010052

APA Style

Yuan, B., Du, Q., Hao, C., Zhao, Y., & Yu, Z. (2023). A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications. Micromachines, 14(1), 52. https://doi.org/10.3390/mi14010052

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A Novel Wideband Transition from LTCC Laminated Waveguide to Air-Filled Rectangular Waveguide for W-band Applications

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