3D printed waveguide step‐twist with bandpass filtering functionality. Issue 11 (1st May 2020)

• Record Type: Journal Article
• Authors: Zhang, Yi; Zhang, Fan; Gao, Yang; Xu, Jun; Guo, Cheng; Shang, Xiaobang
• Is Part Of: Electronics letters. Volume 56:Issue 11(2020)
• Page Start: 527
• Page End: 528
• Publication Date: 2020-05-01
• Subjects: band‐pass filters -- stereolithography -- optical waveguide filters -- optical waveguides -- integrated optics -- three‐dimensional printing -- light polarisation -- optical rotation -- optical losses; polarisation rotation -- bandwidth 1.0 GHz -- frequency 32.0 GHz -- return loss -- insertion loss -- metal plating -- equally rotated cavity -- bandpass filtering functionality -- 3D printed waveguide step‐twist -- stereolithography apparatus 3D printing -- waveguide technology -- Ka‐band; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2019.4263
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A novel waveguide step‐twist integrated with a bandpass filter is presented in this Letter. The twist is composed of four equally rotated cavities to achieve polarisation rotation and filtering functionalities simultaneously. Such step‐twist can achieve a significant reduction in size and weight. The design is demonstrated at Ka‐band using waveguide technology and is fabricated using a stereolithography apparatus 3D printing together with metal plating. The device is designed to have a centre frequency of 32 GHz and a bandwidth of 1 GHz. The measured result shows good agreement with simulations, with a measured average insertion loss of 0.84 dB and a return loss better than 15 dB across the passband.