QUASI-ELLIPTIC MICROSTRIP FILTER

Author:

Razinkin V. P.1,Aubakirov K. Ya.2,Serikov T. G.3

Affiliation:

1. Novosibirsk State Technical University

2. Siberian State University of Geosystems and Technologies

3. Karagandy State Technical University

Abstract

Currently, modern telecommunication and radio-electronic systems widely use wireless information transmission technologies over the radio channel. Therefore, an urgent task is to ensure electromagnetic compatibility of a large number of simultaneously operating radio facilities using high-selective bandpass filters. This paper presents circuit solutions for microstrip filters using incomplete inclusion of loads and communication elements. This construction makes it possible to obtain additional attenuation poles in the near zone of the stop band, which frequencies are determined by the load inclusion factor. It is proposed to include a capacitor in the middle of the microstrip communication line to improve the selective properties. This made it possible to increase the order of the filter at constant dimensions. The frequency characteristics of a high-selective quasi-elliptic filter are given.

Publisher

CRI Electronics

Subject

General Medicine

Reference8 articles.

1. Zhang W., Wu Y., Liu Yu., et al. Planar wideband differential mode bandpass filter witch common mode noise absorption. IEEE Microwave and Wireless Components Letters, 2017, vol. 27, no. 5, pp. 458–460.

2. Belyaev B.A., Leksikov A.A., Shabanov V.F. Microstrip three mode resonator and miniature filter based on it with ultra wide bandwidth. Doklady Akademii nauk, 2017, vol. 474, no. 6, pp. 682–686. (In Russian).

3. Razinkin V.P. Mechtiev A.D., Polovnikov A.S., Serikov T.G. Synthesis of narrow band filters based on Norton transformations. Voprosy radioelektroniki, 2016, no. 4, pp. 93–98. (In Russian).

4. Unru N.E. Interresonators circuit of coupling in discrete tuning filters on pieces of homogeneous long lines. Voprosy radioelektroniki, 2016, no. 4, pp. 60–63. (In Russian).

5. Unru N.E. Circuits of connection quarter wave discrete tuning resonators on pieces of homogeneous long lines with external devices. Voprosy radioelektroniki, 2016, no. 4, pp. 64–68. (In Russian).

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