volume | PIER Journals

Abstract

The paper presents a novel design technique for reflection-type varactor analog phase shifters based on tunable reflective loads. The reflective load comprises two similar tuning stubs with incorporated varactor diodes, where each varactor can be tuned independently. It is shown that by an appropriate losses equalization method applied together with a specific independent varactors control algorithm it is possible to achieve the desired 360° phase shift with stabilized losses, which are significantly lower compared to the well-known single-channel design. We derive and discuss in details main design relations arisen from the complex plane reflection coefficient consideration. The presented technique is first verified by circuit simulation in ADS, and comparison with the classical single-channel design is also considered. Next, we develop experimental prototypes of a reflective load and a full phase shifter based on a packaged silicon varactor diode for operation in C-band with 5.8 GHz central frequency. Experimental and theoretical results are in perfect agreement. Moreover, we have found that the bandwidth of the proposed phase shifter can be greatly enhanced if the reflective loads are tuned at each sub-band using a unique optimal tuning path. The suggested reflective load demonstrates the total bandwidth of 10.3% and the instantaneous bandwidth of 1.7% (sub-band), where inside each sub-band measured ripple at the central frequency is around 0.5 dB, and the maximum overall ripple is below 0.8 dB.

1. Chakraborty, A. and B. Gupta, "Paradigm phase shift," IEEE Microwave Magazine, Vol. 18, No. 1, 22-41, Jan.-Feb. 2017.
doi:10.1109/MMM.2016.2616155

2. Wang, Z. G., B. Yan, R. M. Xu, and Y. C. Guo, "Design of Ku band six bit phase shifter using periodically loaded-line and switched-line with loaded-line," Progress In Electromagnetics Research, Vol. 76, 369-379, 2017.

3. Semernya, R. E., A. R. Vilenskiy, V. I. Litun, and S. L. Chernyshev, "Design approach for microstrip PIN-diode phase shifters with equalized losses," 2017 Progress In Electromagnetics Research Symposium --- Spring (PIERS), 3835-3841, St Petersburg, Russia, May 22-25, 2017.

4. Mohajer, M., M. Faraji-Dana, and S. Safavi-Naeini, "Effects of resonance-based phase shifters on Ka-Band phased array antenna performance for satellite communications," Progress In Electromagnetics Research B, Vol. 60, 259-274, 2014.
doi:10.2528/PIERB14060906

5. Vendik, O. G. and M. Parnes, "A phase shifter with one tunable component for a reflectarray antenna," IEEE Antennas and Propagation Magazine, Vol. 50, No. 4, 53-65, Aug. 2008.
doi:10.1109/MAP.2008.4653662

6. Hum, S. V., M. Okoniewski, and R. J. Davies, "Realizing an electronically tunable reflectarray using varactor diode-tuned elements," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 6, 422-424, Jun. 2005.
doi:10.1109/LMWC.2005.850561

7. Natarajan, A., et al. "W-Band dual-polarization phased-array transceiver front-end in SiGe BiCMOS," IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 6, 422-424, Jun. 2015.
doi:10.1109/TMTT.2015.2422691

8. Megej, A. and V. F. Fusco, "Low-loss analog phase shifter using varactor diodes," Microwave and Optical Technology Letters, Vol. 19, No. 6, 384-386, Dec. 1998.
doi:10.1002/(SICI)1098-2760(19981220)19:6<384::AID-MOP2>3.0.CO;2-F

9. Garver, R. V., "360◦ varactor linear phase modulator," IEEE Transactions on Microwave Theory and Techniques, Vol. 17, No. 3, 137-147, Mar. 1969.
doi:10.1109/TMTT.1969.1126912

10. Niehenke, E. C., V. V. DiMarco, and A. Friedberg, "Linear analog hyperabrupt varactor diode phase shifters," IEEE International Microwave Symposium Digest, 657-660, 1985.
doi:10.1109/MWSYM.1985.1132067

11. Lin, C., S. Chang, C. Chang, and Y. Shu, "Design of a reflection-type phase shifter with wide relative phase shift and constant insertion loss," IEEE Transactions on Microwave Theory and Techniques, Vol. 55, No. 9, 1862-1868, Sept. 2007.
doi:10.1109/TMTT.2007.903346

12. Lin, C., S. Chang, and W. Hsiao, "A full-360 reflection-type phase shifter with constant insertion loss," IEEE Microwave and Wireless Components Letters, Vol. 18, No. 2, 106-108, Feb. 2008.
doi:10.1109/LMWC.2007.915094

13. Abbosh, A. M., "Compact tunable phase shifters using short section of coupled lines," IEEE Transactions on Microwave Theory and Techniques, Vol. 60, No. 8, 2465-2472, Aug. 2012.
doi:10.1109/TMTT.2012.2198232

14. Liu, W. J., et al. "A wideband tunable reflection-type phase shifter with wide relative phase shift," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 64, No. 12, 1442-1446, Dec. 2017.
doi:10.1109/TCSII.2017.2650946

15. Henoch, B. T. and P. Tamm, "360 reflection-type diode phase modulator," IEEE Transactions on Microwave Theory and Techniques, Vol. 19, No. 1, 103-105, Jan. 1971.
doi:10.1109/TMTT.1971.1127456

16. Ulriksson, B., "Continuous varactor-diode phase shifter with optimized frequency response," IEEE Transactions on Microwave Theory and Techniques, Vol. 27, No. 7, 650-654, Jul. 1979.
doi:10.1109/TMTT.1979.1129695

17. Xiao, M. X., S. W. Cheung, and T. I. Yuk, "A C-band wideband 360◦ analog phase shifter design," Microwave and Optical Technology Letters, Vol. 52, No. 2, 355-359, Feb. 2010.
doi:10.1002/mop.24938

18. Burdin, F., Z. Iskandar, F. Podevin, and P. Ferrari, "Design of compact reflection-type phase shifters with high figure-of-merit," IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 6, 1883-1893, Jun. 2015.
doi:10.1109/TMTT.2015.2428242

19. Vilenskiy, A. R. and M. V. Makurin, "Analog varactor phase shifter," 2017 Progress In Electromagnetics Research Symposium --- Spring (PIERS), 3820-3825, St Petersburg, Russia, May 22-25, 2017.

20. Garg, R. and A. S. Natarajan, "A 28-GHz low-power phased-array receiver front-end with 360◦ RTPS phase shift range," IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 11, 4703-4714, Nov. 2017.
doi:10.1109/TMTT.2017.2707414

21. Krantz, S. G., "Linear fractional transformations," Handbook of Complex Variables, 81-86, Boston, MA, USA, Birkhäuser, 1999.

22. Öjefors, E., et al. "Electrically steerable single-layer microstrip traveling wave antenna with varactor diode based phase shifters," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 9, 2451-2460, Sept. 2017.
doi:10.1109/TAP.2007.904104

23. Norwood, M. H. and E. Shatz, "Voltage variable capacitor tuning: A review," Proceedings of IEEE, Vol. 56, No. 5, 788-798, May 1968.
doi:10.1109/PROC.1968.6408

24. Mehlhorn, K. and P. Sanders, "Shortest paths," Algorithms and Data Structures: The Basic Toolbox, 196-200, Springer-Verlag, Berlin, Germany, 2008.

Dr. Artem R. Vilenskiy

Mr. Mikhail N. Makurin

Dr. Ekaterina I. Poshisholina

Dr. Chongmin Lee