@inproceedings{e3c306abbb6b492290be387940c19ee6,
title = "Continuously Tunable True- Time- Delay Phase Shifter Using Switchable Varactor- Tuned Transmission Lines",
abstract = "This work reports on a continuously tunable true-time-delay phase shifter using switchable varactor-tuned transmission lines. The phase shift tuning range is extended by using p-i-n diodes to switch different varactor-tuned transmission lines without increasing the capacitance tuning range. Two phase shifters are fabricated on a 0.787 mm-thick Rogers RT/Duroid 5880 substrate with ϵr=2.2 and tanδ= 0.0009. For a I-unit phase shifter, the measured phase shift is about 28° at 1 GHz with insertion loss of less than 1.4 dB, and return loss of better than 15 dB. For a cascaded 2-unit phase shifter, the measured phase shift is about 49° at 1 GHz with insertion loss of less than 1.5 dB and return loss of better than 15 dB.",
keywords = "Phase shifter, true-time-delay, tunable, varactor",
author = "Huizhong Deng and Feng Lin",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
year = "2018",
month = aug,
day = "17",
doi = "10.1109/MWSYM.2018.8439401",
language = "English",
isbn = "9781538650677",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "514--517",
booktitle = "Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018",
address = "United States",
}