@inproceedings{b4cf21b498a04a73b9344a2c2599d954,
title = "Multilayer interdigital ultra-wideband filter",
abstract = "A miniature ultra wideband (UWB) bandpass filter that uses a multilayer interdigital structure is presented in this paper. The quarter-wavelength resonators including microstrip line resonator and coplanar waveguide (CPW) resonator are vertically stacked to achieve a strong coupling for the designed UWB filter. By adopting multilayer configurations, a miniature footprint is achieved. A seven-pole UWB bandpass filter is designed and fabricated using the multilayer liquid crystal polymer (LCP) lamination process, and is measured by using a vector network analyzer. The measured and predicted results are presented with good agreements. The fabricated prototype has a 10 dB return loss bandwidth from 2.8 GHz to 11.0 GHz and a compact size of 9.3 mm by 3.6 mm (0.38 λg by 0.15 λg, where λg is the guided wavelength of 50 Ω microstrip line at centre frequency).",
keywords = "Bandpass filter, coplanar waveguide (CPW), liquid crystal polymer (LCP), microstrip, ultra-wideband (UWB)",
author = "Zhang-Cheng Hao and Jia-Sheng Hong",
year = "2011",
month = aug,
day = "4",
doi = "10.1109/MWSYM.2011.5972595",
language = "English",
isbn = "9781612847542",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "IEEE",
booktitle = "2011 IEEE MTT-S International Microwave Symposium",
address = "United States",
note = "2011 IEEE MTT-S International Microwave Symposium, IMS 2011 ; Conference date: 05-06-2011 Through 10-06-2011",
}