@inproceedings{4bf96f93f4ab4a55b32e0f87631313da,
title = "Miniature wideband rat-race coupler in silicon-based integrated passive device technology",
abstract = "In this paper, a novel miniature wideband rat-race coupler design is proposed. The proposed rat-race coupler employs differential bridged-T coils and a phase inverter as building blocks, such that both compact size and wide bandwidth can be achieved at the same time. Specifically, a miniature rat-race coupler for 2.5 GHz application is implemented in silicon-based integrated passive device technology. The circuit size is only 3.275 mm×2.247 mm. The measured to-dB return loss bandwidth for the difference port is larger than 93% while the 15-dB return loss bandwidth is larger than 63%. Very small amplitude and phase errors as well as good isolation performance are also achieved. To the best of our knowledge, the proposed one is the smallest ever reported rat-race coupler with a bandwidth larger than 30%.",
keywords = "Bridged-T coil, Integrated passive device, Rat-race coupler, Ring hybrid",
author = "Liu, {You Rong} and Chan, {Chung Hsien} and Lin, {Yo Shen}",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 ; Conference date: 04-08-2020 Through 06-08-2020",
year = "2020",
month = aug,
doi = "10.1109/IMS30576.2020.9224034",
language = "???core.languages.en_GB???",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "727--730",
booktitle = "IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium",
}