Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. No. 2

Full text in Russian (pdf)

Russian page


DOI https://doi.org/10.30898/1684-1719.2021.2.9

UDC 621.396


Miniaturization of Quadrature Stub Directional Couplers


D. A. Letavin

Ural Federal University named after the first President of Russia B.N.Yeltsin, Mira str., 32, Yekaterinburg 620002, Russia


The paper was received on January 14, 2021, after correction - on February 10, 2021


Abstract. The method of designing stub quadrature couplers with reduced dimensions relative to the standard design is considered. This technique is based on replacing quarter-wave sections of a microstrip transmission line (MTL) with low-pass filters (LPF), with equivalent frequency characteristics in the vicinity of the central frequency of the device. In addition, the circuit and design implementations of compact couplers with a controlled operating frequency and different wave impedances of the supply lines of the coupler are considered.

Key words: microwave filter, microstrip line, miniaturization, branch-line coupler.


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For citation:

Letavin D.A. Miniaturization of quadrature stub directional couplers. Zhurnal Radioelektroniki [Journal of Radio Electronics]. 2021. No.2. https://doi.org/10.30898/1684-1719.2021.2.9 (In Russian)