Resonant notch filters based on rectangular waveguide extensions

Author

Bogdashov, Alexander A. ; Denisov, G.G. ; Lukoynikov, D.A. ; Rodin, Yu V. ; Panin, A.N.

Author_Institution

Inst. of Appl. Phys., Acad. of Sci., Nizhny Novgorod, Russia

fYear

2002

fDate

17-19 Aug. 2002

Firstpage

1029

Lastpage

1032

Abstract

Notch filters based on resonant reflection of the incident guided wave of a single-mode rectangular guide designed for frequencies of 28 and 70 GHz are numerically and experimentally studied. As shown by experiments, the 28 GHz two-sectioned resonant notch filter provides the attenuation of -60 dB at the central frequency f=28 GHz, more than -30 dB attenuation within the frequency band δf=60 MHz and attenuation-free band up to 36 GHz. For the 70 GHz notch filter, the measured maximum attenuation is -60 dB at the operating frequency. The notch bandwidth at the level of -55 dB is 100 MHz. These characteristics allow use of the notch filters for protection of HF receivers of high sensitivity, for spectral measurements and other related purposes.

Keywords

microwave filters; microwave receivers; millimetre wave filters; millimetre wave receivers; notch filters; protection; rectangular waveguides; resonator filters; waveguide filters; 100 MHz; 28 GHz; 36 GHz; 70 GHz; HF receiver protection; attenuation; attenuation-free band; central frequency; frequency band; incident guided wave resonant reflection; notch bandwidth; operating frequency; rectangular waveguide extensions; resonant notch filters; sensitivity; single-mode rectangular guide; spectral measurements; two-sectioned resonant notch filter; Attenuation; Diffraction; Physics; Protection; Rectangular waveguides; Reflection; Resonance; Resonant frequency; Resonator filters; Scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on

Print_ISBN

0-7803-7486-X

Type

conf

DOI

10.1109/ICMMT.2002.1187880

Filename

1187880