A three-stub waveguide impedance matching algorithm based on equivalent circuit analysis
Source abstract
Abstract
Three-stub waveguide is a common impedance matching device, which is widely used in microwave impedance matching system. In this paper, an impedance matching algorithm for three-stub waveguide with large stubs is proposed based on the equivalent circuit analysis method, which can be used to realize continuous real-time impedance matching. First, the equivalent circuit of a single stub is established by using series and parallel reactance, and the equivalent circuit of three-stub waveguide is further established by cascading three single-stub models. Then, the two-port scattering parameters of three-stub waveguide, the load impedance and the impedance of three-stub waveguide are derived. In the matching process, by using the currently detected reflection coefficient and two-port scattering parameters, the terminal load impedance is calculated, and the optimal insertion depths of the stubs are finally determined by using the impedance of three-stub waveguide with different stub depths. This algorithm can reduce the voltage standing wave ratio, and can be easily redesigned for other waveguides.
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Research context
OpenAlex topics: Microwave Engineering and Waveguides · Gyrotron and Vacuum Electronics Research · Microwave and Dielectric Measurement Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electronic Information Engineering, China West Normal University, Nanchong, China
College of Electronics and Information Engineering, Sichuan University, Chengdu, China
Funding
National Natural Science Foundation of China
References (24)
Show source-provided references
1. Bilik V. 2014. Automatic impedance matching in high-power microwave applications. In: IMPI 48 Microwave Power Symposium New Orleans Louisiana. p. 6–9.
2. 10.1080/08327823.2010.1168978610.1080/08327823.2010.11689786 ↗
3. 10.1080/08327823.1997.1168832010.1080/08327823.1997.11688320 ↗
4. Collin RE. 2007. Foundations for microwave engineering. New York: wiley.
5. Dwersteg B. 1990. SC-cavity operation via WG-transformer. Proceedings of the Fourth Workshop on RF Superconductivity KEK Tsukuba Japan. p. 593–604.
6. Ikeda Y Nishiyama A Wachi Y Kaneko M. 2009. Research and development of microwave plasma combustion engine (Part I: concept of plasma combustion and plasma generation technique). SAE Technical Paper 2009-01-1050.10.4271/2009-01-1050 ↗
7. 10.1109/JSTQE.2008.92443110.1109/JSTQE.2008.924431 ↗
8. 10.1080/08327823.2020.183805110.1080/08327823.2020.1838051 ↗
9. 10.1063/1.499679010.1063/1.4996790 ↗
10. 10.1063/5.009326810.1063/5.0093268 ↗
11. Marcuvitz N. 1951. Waveguide handbook. IEEE Electromagnetic Waves Series. London: IET.
12. 10.1063/1.114288410.1063/1.1142884 ↗
13. Muguira L Arredondo I Belver D Eguiraun M Fernandez FJ Feuchtwanger J. 2011. Automatic tuner unit design simulation and measurement for automatic operation of the RF system in the ESS-Bilbao h + ion source. In: THPS023 Proceedings of IPAC2011 San Sebastin Spain. p. 3469–3471.
14. Muguira L Arredondo I Belver D Eguiraun M Fernandez FJ Feuchtwanger J. 2012. Automatic tuner unit operation for the microwave system of the ESS-Bilbao h + ion source. In: WEPPD070 Proceedings of IPAC2012. New Orleans Louisiana. p. 2684–2686.
15. Parro VC Pait FM. 2003a. Design of an automatic impedance matching system for industrial continuous microwave ovens. Part I: modeling and off line tuning. In: Proceedings of 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Foz do Iguacu. p. 791–795.10.1109/IMOC.2003.1242680 ↗
16. Parro VC Pait FM. 2003b. Design of an automatic impedance matching system for industrial continuous microwave ovens. Part II: experimental results. In: Proceedings of 2003 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference Foz do Iguacu. p. 797–800.10.1109/IMOC.2003.1242681 ↗
17. 10.1109/TIM.2006.88740810.1109/TIM.2006.887408 ↗
18. 10.1016/j.fusengdes.2006.07.03210.1016/j.fusengdes.2006.07.032 ↗
19. 10.1063/1.499390210.1063/1.4993902 ↗
20. 10.1002/j.1538-7305.1950.tb02348.x10.1002/j.1538-7305.1950.tb02348.x ↗
21. Veshcherevich VG Belomestnykh S. 2002. Correction of the coupling of CESR RF cavities to klystrons using three-post waveguide transformers. Technical Report Cornell report SRF 020220-02:1-18.
22. 10.1080/00222739.1973.1168902110.1080/00222739.1973.11689021 ↗
23. Liu Y Mei KK. 1999. Generalized transmission line equations. In: IEEE antennas and propagation society international symposium. San Antonio TX: IEEE. p. 798–801.
24. Zhou L Kuang Y Li S Fan X Cheng QS. 2019. Automatic Impedance Matching for Three-Stub Waveguide Tuner Based on Space Mapping. In: 2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT 2019). New York: IEEE. p. 1–3.10.1109/ICMMT45702.2019.8992341 ↗