volume | PIER Journals

Abstract

This paper proposes the design of a microwave equalizer based on SIR loading with internal coupled-line. By loading a ring-type stepped impedance resonator (SIR) with internal coupled-lines, a microwave equalizer with positive slope transmission characteristics is presented. The frequency response is synthesized using a second-order SIR, and a detailed theoretical derivation of the equalizer is presented. A prototype of the equalizer is fabricated and measured to validate its expected performance, with the measurements showing good agreement with the predictions. The microwave amplitude equalizer demonstrates the necessary gain slope across its entire operational frequency range. Finally, a potential design scheme for a microwave amplitude equalizer is proposed.

1. Gmitrovic, Miodrag V., Bratislav D. Milovanovic, and Zlatoljub D. Milosavljevic, "Fixed and variable slope CATV amplitude equalizers," Applied Microwave and Wireless, Vol. 10, 76-85, 1998.

2. Kampa, Jerzy and Krystyna Petrus, "Microwave amplitude equalizer," 13th International Conference on Microwaves, Radar and Wireless Communications. MIKON-2000. Conference Proceedings (IEEE Cat. No. 00ex428), Vol. 1, 37-40, 2000.

3. Wang, Yongfei, Dongfang Zhou, Yi Zhang, and Chaowen Chang, "Using multilayered substrate integrated waveguide to design microwave gain equalizer," Advances in Materials Science and Engineering, Vol. 30, 1341-1344, 2014.

4. Tang, Sheng, Yong Zhang, and Jing Zhang, "A novel compact size microstrip equalizer based on spiral resonators," 2010 International Conference on Microwave and Millimeter Wave Technology, 730-733, 2010.

5. Wang, Zhongxun and Baofu Jia, "Research on microwave equalizer of aperture-backed technique," 2008 8th International Symposium on Antennas, Propagation and EM Theory, 1375-1378, 2008.

6. Mellor, Douglas J., "On the design of matched equalizers of prescribed gain versus frequency profiles," 1977 IEEE MTT-S International Microwave Symposium Digest, 308-311, 1977.

7. Ying, Zhao, Dong-Fang Zhou, Zhong-Xia Niu, and Bin Zhao, "A improved branch resonator and it's application in microstrip equalizer designing," 2007 International Conference on Microwave and Millimeter Wave Technology, 1-4, 2007.

8. Ying, Zhao, Dong-Fang Zhou, Zhong-Xia Niu, and De-Wei Zhang, "Study of the influence of resistors for microstrip equalizer," 2005 Asia-Pacific Microwave Conference Proceedings, Vol. 5, 4, 2005.

9. Zhang, Yong, Mengguo Yu, Bo Yan, and Ruimin Xu, "Research on the millimeter wave power equalizer," 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies For Wireless Communications, 446-449, 2007.

10. Zhou, Tai-Fu, Yong Zhang, and Rui-Min Xu, "Research on the millimeter wave gain equalizer," 2011 IEEE International Conference on Microwave Technology & Computational Electromagnetics, 180-182, 2011.

11. Gourav, Chaturvedi and Gaurav Anand, "Non-reflective broadband microwave gain equalizer for EW applications," 2019 IEEE MTT-S International Microwave and RF Conference (IMARC), 1-4, 2019.

12. Jiang, Shu, Jinping Xu, and Dezhi Ding, "A 5-19 GHz amplitude-shaped power amplifier using microstrip sirs loaded with film resistors," 2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT), Vol. 1, 138-140, 2016.

13. Pozar, David M., Microwave Engineering, John Wiley & Sons, 2011.

Dr. Xiaolei Yang

Dr. Honglin Zhang

Dr. Wencheng Ren

Dr. Chunlei Yuan

Miss Lijie Xu

Professor Dong Chen