UDC 537.874; 621.396

Voltage tunable microwave multiband filters through meta-interferometer

 

G. A. Kraftmakher, V. S. Butylkin, Y. N. Kazantsev, V. P. Mal’tsev

Fryazino Branch of Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Vvedensky Sq.1, Fryazino Moscow region 141190, Russia

 

The paper is received on September 15, 2018

 

Abstract. First it has been observed that microwave interferometer with embedded metastructure, meta-surface or meta-atom as voltage-controlled original beam-splitter can show new functionalities, such as specific selective control of line width and intensity, as well line shape and position in multiband spectral filtering. We realize and investigate modified meta-interferometer on basis of rectangular waveguide tee with varactor-loaded conductive resonance elements as a beam splitter at 3 – 6 GHz. It is achieved tunable considerable narrowing and 0.15 – 0.2 GHz shifting of band; switching between stop-band (-25 dB) and pass-band (-2;-5 dB), as well widening and intensification of each filtering band by turns in dependence on resonance element properties and bias voltage 0 – 10 V. The results open up a new approach to implement switchable and tunable multiband microwave filters.

Key words: metastructure, microwave, interferometer, beam splitter, tuning, varactor, multiband filters.

References

1. Cameron Richard J., Kudsia Chandra M., and Mansour Raafat R. Microwave Filters for Communication Systems: Fundamentals, Design, and Applications, Second Edition, JohnWiley & Sons, 2018

2.  Entesari K. and Rebeiz G.M.: ‘A differential 4-bit 6.5-10-GHz RF MEMS tunable filter’, IEEE Trans. Microwave Theory Tech., 2005, Vol. 53, No. 5, pp. 1103 -1110, doi:    10.1109/TMTT.2005.843501

3. Brown A.R., and Rebeiz G.M.: ‘A varactor-tuned RF filter’, IEEE Trans Microwave Theory Tech, 2000, Vol. 48, No. 7, pp. 1157-1160, doi: 10.1109/22.848501

4. Gil I., Garcia-Garcia J., Bonache J., Martin F., et al.: ‘Varactor-loaded split ring resonators for tunable notch filters at microwave frequencies’, Electronics Letters, 2004, Vol. 40, No. (21, pp.1347 -1348, doi: 10.1049/el:20046389

5. Genc Alper, and Baktur Reyhan: ‘A tunable bandpass filter based on varactor loaded split-ring resonators’, Microwave and optical technology letters, 2009, Vol. 51, No. 10, pp. 2394 -2396, doi: 10.1002/mop.24641

6. Zhao Ya-juan, Zhou Bi-cheng, Zhang Ze-kui I, et al.: ‘A compact tunable metamaterial filter based on split-ring resonators’, Optoelectronics letters, 2017, Vol. 13, No. (2, pp. 120 -122, doi: 10.1007/s11801-017-7008-7

7. Vendik I., Kholodnyak D., Kapitanova P., et al.: ‘Multiband tunable microwave resonators and filters on a combination of right/left-handed transmission line sections’. Proceedings of 3^rd International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, London, 2009, pp. 181-183

8. Kraftmakher G.A., Butylkin V.S., and Kazantsev Yu.N.: ‘Electrically controlled frequency bands of nonreciprocal passage of microwaves in metastructures’, Tech. Phys. Letters, 2013, Vol. 39, No. 6, pp. 505-508, doi: 10.1134/S1063785013060060

9. Butylkin, V.S., G.A. Kraftmakher and Yu.N. Kazantsev, “About electric control of nonreciprocity of microwave transition in metastructures,” Zhurnal radioelektroniki – Journal of Radio Electronics, 2014, No. 12. Available at http://jre.cplire.ru/jre/dec14/22/text.html (In Russian)

10.   Fok  Mable P. and Ge Jia: ‘Tunable Multiband Microwave Photonic Filters’, Photonics, 2017, Vol. 4, No. 4, p. 45, doi: 10.3390/photonics4040045

11.  Ma Xiao-song, Zotter Stefan, Tetik Nuray, et al.: ‘A high-speed tunable beam splitter for feed-forward photonic quantum information processing’, Optics express, 2011, Vol. 19, No. 23, pp. 22723 -22730, doi: 10.1364/OE.19.022723  

 

For citation:
G. A. Kraftmakher, V. S. Butylkin, Y. N. Kazantsev, V. P. Mal’tsev. Voltage tunable microwave multiband filters through meta-interferometer. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No. 9. Available at http://jre.cplire.ru/jre/sep18/19/text.pdf

DOI  10.30898/1684-1719.2018.9.19