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ISSN 2415-3400 (Online)
ISSN 1028-821X (Print)

PROPERTIES OF THE TUNABLE WAVEGUIDE-DIELECTRIC RESONATOR OF THE MILLIMETER BAND WITH THE INCREASED Q-FACTOR

heading: 
APPLIED RADIOPHYSICS
Bilous, RI, Martynyuk, SP, Motornenko, AP, Skuratovskiy, IG
Organization: 

O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
12, Proskura st., Kharkov, 61085, Ukraine
Е-mail: briz@ire.kharkov.ua
https://doi.org/10.15407/rej2015.01.081
Language: Russian
Abstract: 

The resonance structures serve as the basis for many electronic devices. Therefore the creation of the effective tunable resonator is the actual and important problem. Using of the waveguide-dielectric resonator insures opportunity for the mechanical frequency tuning over a wide range but at the same time the Q-factor is changed. The last investigations suggested that the decrease of the eigen Q-factor of the tuning waveguide-dielectric resonator in the section of the circular cut-off waveguide can be decreased by using the resonance short-circuit plunger calculated on the given frequency. The investigations have been conducted for the 3-cm waveband. This paper is devoted to investigation of the possibility to increase Q-factor of the resonator of the waveguide-dielectric type in the millimeter band where influence of the contact imperfection between the plunger and waveguide walls is essential. As a result of the conducted investigations the Q-factor more than 2 000 in over the band of the tuning frequency was obtained for the resonator made of the section of the circuit cut-off waveguide with the Teflon dielectric in the 8-mm waveband.
Keywords: eigen frequency and Q-factor, evanescent waveguide, waveguide-dielectric resonator

Manuscript submitted 07.10.2014
PACS 07.57.-c; 77.22.-d
Radiofiz. elektron. 2015, 20(1): 81-84
Full text (PDF)

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