volume | PIER Journals

Abstract

The design and implementation of millimeter-wave full-band waveguide-based spatial power divider/combiner are presented in this paper. The divider/combiner is based on a compact waveguide-to-microstrip (Wg-Ms) probe-array transition structure, providing full-band frequency coverage and low insertion loss. Efficient design and analysis method for this type of power divider/combiner is developed using spectral domain method combined with the image theory. Ka-band two-way (1×2) and four-way (2×2) power combining structures are analyzed and optimized. The performances of the both optimized power dividers/combiners are evaluated by experiments in back-to-back configurations. The measured overall insertion loss for the 1×2 power divider/combiner is better than 1.4dB over the entire Ka-band, which demonstrates the low-loss performance of the divdier/combiner. The optimized 2×2 power divider/combiner shows a same performance as the 1×2 structure without any degradation in operating bandwidth and insertion loss.

1. Chang, K. and C. Sun, "Millimeter-wave power-combining techniques," IEEE Trans. Microwave Theory and Tech., Vol. 31, No. 2, 91-107, Feb. 1983.
doi:10.1109/TMTT.1983.1131443 Google Scholar

2. Russell, K. J., "Microwave power combining techniques," IEEE Trans. Microwave Theory and Tech., Vol. 27, No. 5, 472-478, May 1979.
doi:10.1109/TMTT.1979.1129651 Google Scholar

3. Xie, X. Q., R. M. Xu, B. Yan, Y. Zhang, and W. G. Lin, "A novel millimeter-wave power combining circuit," Int. J. Infrared and Millimeter Waves, Vol. 26, No. 10, 1453-1464, 2005.
doi:10.1007/s10762-005-8443-2 Google Scholar

4. Epp, L. W., D. J. Hoppe, A. R. Khan, and S. L. Stride, "A high-power Ka-band (31{36 GHz) solid-state ampli¯er based on low-loss corporate waveguide combining," IEEE Trans. Microwave Theory and Tech., Vol. 56, No. 8, 1899-1908, Aug. 2008.
doi:10.1109/TMTT.2008.927299 Google Scholar

Deli. Delisio, M. P. and R. A. York, "Quasi-optical and spatial power combining," IEEE Trans. Microwave Theory and Tech., Vol. 50, No. 3, 929-936, Mar. 2002.
doi:10.1109/22.989975 Google Scholar

6. Kim, M., E. A. Sorvero, J. B. Hacker, M. P. DeLisio, J.-C. Chiao, S.-J. Li, D. Gagnon, J. J. Rosenberg, and D. B. Rutledge, "A 100-element HBT grid amplifier," IEEE Trans. Microwave Theory and Tech., Vol. 41, No. 10, 1762-1770, Oct. 1993. Google Scholar

7. Chang, J., D. H. Schaubert, K. S. Yngvesson, J. Huang, V. Jamnejad, D. Rascoe, and A. L. Riley, "Ka-band power-combining MMIC array," 15th Int. Infrared Millimeter-Waves Conf. Dig., 532-534, Orlando, FL, Dec. 1990. Google Scholar

8. Tsai, H. S., M. J. W. Rodwell, and R. A. York, "Planar amplifier array with improved bandwidth using folded-slots," IEEE Microwave and Guided Wave Letters, Vol. 4, No. 4, 112-114, Apr. 1994.
doi:10.1109/75.282576 Google Scholar

9. Cheng, N. S., P. Jia, D. B. Rensh, and R. A. York, "A 120-W X-band spatially combined solid-state amplifier," IEEE Trans. Microwave Theory and Tech., Vol. 47, No. 12, 2557-2561, Dec. 1999.
doi:10.1109/22.809006 Google Scholar

10. Chen, J. P., L.-Y. Chen, A. Alexanian, and R. A. York, "Broad-band high power amplifier using spatial power-combining technique," IEEE Trans. Microwave Theory and Tech., Vol. 51, No. 12, 2469-2475, Dec. 2003.
doi:10.1109/TMTT.2003.819766 Google Scholar

11. Jeong, J., Y. Kwon, S. Lee, C. Cheon, and E. A. Sovero, "1.6- and 3.3-W power-amplifier modules at 24 GHz using waveguide-based power combining structures," IEEE Trans. Microwave Theory and Tech., Vol. 48, No. 12, 2700-2708, Dec. 2000.
doi:10.1109/22.899033 Google Scholar

12. Song, K., Y. Fan, and X. Zhou, "Broadband radial waveguide power amplifier using a spatial power combining technique," IET Microwaves, Antennas and Propagation, Vol. 3, No. 8, 1179-1185, 2009.
doi:10.1049/iet-map.2008.0299 Google Scholar

13. Xie, X. Q., C. Zhao, and R. Diao, "A millimeter-wave power combining amplifier based on a waveguide-microstrip E-plane dual-probe four-way power combining network," Int. J. Infrared and Millimeter Waves, Vol. 29, No. 9, 862-870, 2008.
doi:10.1007/s10762-008-9380-7 Google Scholar

14. Shih, Y. C., T. N. Ton, and L. Q. Bui, "Waveguide-to-microstrip transitions for millimeter-wave applications," IEEE MTT-S Int. Microwave Symp. Dig., Vol. 1, 473-475, May 1988. Google Scholar

15. Itoh, T., "Spectral domain immittance approach for dispersion characteristics of generalized printed transmission lines," IEEE Trans. on Microwave Theory and Tech., Vol. 28, No. 7, 733-736, Jul. 1980.
doi:10.1109/TMTT.1980.1130158 Google Scholar

16. Yassin, G. and S. Withington, "Analytical expression for the input impedance of a microstrip probe in waveguide," Int. J. Infrared and Millimeter Waves, Vol. 17, No. 10, 1685-1705, 1996.
doi:10.1007/BF02069582 Google Scholar

17. Ho, T. Q. and Y.-C. Shih, "Spectral-domain analysis of E-plane waveguide to microstrip transition," IEEE Trans. Microwave Theory and Tech., Vol. 37, No. 2, 388-392, Feb. 1989.
doi:10.1109/22.20065 Google Scholar

18. Pozar, D. M., Microwave Engineering, 2nd Ed., Wiley, New York, 1998.

Dr. Kang Yin

Dr. Kedi Zhang

Professor Jinping Xu