Microstrip high-pass filter on two resonators of same shape

• Published in: 2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) pp. 1 - 4
• Main Authors: Letavin, Denis A., Knyazev, Nikolay S.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-11-2017
• Subjects: Band-pass filters; Filtering theory; high-pass filter; interdigital capacitor; Low pass filters; Microstrip filters; microstrip line; Microwave filters; miniaturization; resonator; Resonator filters; Resonators
• DOI: 10.1109/COMCAS.2017.8244722

This paper describes the design and study of the microstrip high-pass filter structure. The suggested filter is implemented on two resonators of same shape, situated on same side of the substrate, and two microstrip lines with serially connected interdigital capacitors on the other side. The filter design and the numerical results were obtained by means of specialized Ansoft HFSS software. Microwave material was selected for the purpose of mathematical simulation and prototype production, with dielectric permeability ϵ = 4.4 and thickness of h=1.5 mm. Filter cutoff frequency equals to 2000 MHz and working band is 1500 MHz. These results were obtained experimentally using vector network analyzer. The prototype was obtained using standard printed circuit boards production method and has a surface areas of 30 × 30 = 900 mm 2 .