Continuously tunable substrate integrated waveguide bandpass filter in liquid crystal technology with magnetic biasing. Issue 20 (1st October 2015)

• Record Type: Journal Article
• Authors: Prasetiadi, A.E.; Karabey, O.H.; Weickhmann, C.; Franke, T.; Hu, W.; Jost, M.; Nickel, M.; Jakoby, R.
• Is Part Of: Electronics letters. Volume 51:Issue 20(2015)
• Page Start: 1584
• Page End: 1585
• Publication Date: 2015-10-01
• Subjects: band‐pass filters -- Q‐factor -- Chebyshev filters -- microwave filters -- substrate integrated waveguides -- waveguide filters -- liquid crystal devices; high‐quality factor -- Q‐factor -- single resonator measurement -- magnetic biasing -- lab demonstrator -- three‐pole Chebyshev filter -- continuously tuneable substrate integrated waveguide bandpass filter -- liquid crystal filled substrate integrated waveguide filter -- frequency 22 GHz -- bandwidth 600 MHz -- loss 6 dB -- frequency 610 MHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.2494
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A liquid crystal filled continuously tunable substrate integrated waveguide filter is proposed which has a high‐quality ( Q ) factor. To measure the Q ‐factor, a single resonator measurement is performed by using magnetic biasing in a lab demonstrator for a proof of concept. The unloaded Q ‐factor is 102–105.6. The resonator is employed to create a three‐pole Chebyshev filter with a centre frequency of 22 GHz and a bandwidth of 600 MHz. Measurement results show a 6 dB insertion loss with a return loss of about 10 dB. The filter is continuously tunable within a tuning range of 610 MHz.