MATEC Web Conf.
Volume 228, 20182018 3rd International Conference on Circuits and Systems (CAS 2018)
|Number of page(s)||4|
|Section||Circuits, Control and Mechatronic Engineering|
|Published online||14 November 2018|
Design and Simulation of a Tunable Stripline Wideband Coupler
School of Electronics & Communication Engineering, Guangdong Mechanical & Electrical College, Guangzhou 510515, China
The basic theory of coupler is introduced, and a tunable strip-line wideband coupler is designed by using radio-frequency/microwave software which is named ADS on the basis of theoretical calculations and analysis. The broadband coupler can be adjusted appropriately in different frequency regions by using a tunable band line. It has a wide bandwidth of 2G~4G, excellent return loss of (>30.5) dB, stable coupling coefficient of (9.85~10.81) dB, and high isolation of (>20.08) dB, the straight-through pass-band transmission coefficient of (0.41~0.62) dB. The coupler has high power tolerance and small size. It can reduce design costs by used in communication systems.
Key words: Tunable / Stripline / Wideband coupler / Return loss / Coupling coefficient / Simulation and analysis
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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