Phys.org August 6, 2019
To reduce the level of interference, devices that carry out the frequency filtering of radio noise are used. Researchers in Russia have designed a miniature stripline resonator on a substrate with a double-sided pattern of strip conductors. The design demonstrates the unique steepness of the slopes of the pass band and the ultra-wide high-frequency stop band, which reaches 100 dB in frequency (attenuation power decay is 10 orders of magnitude) up to a frequency five times the center frequency of the pass band. As several oscillation modes are used in the cavity as working, they managed not only to reduce the size of the pass band filters based on such resonators, but also to significantly improve their selective properties. Better selectivity increases the immunity to interference, increase the quality and range of information transmission, for example, in cellular and satellite communication systems, radar and radio navigation…read more. TECHNICAL ARTICLE
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