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BANDWIDTH CONSIDERATIONS FOR A MICROSTRIP REFLECTARRAY

By M. E. Bialkowski and K. H. Sayidmarie

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Abstract:
The paper describes a theoretical investigation into a limited bandwidth operation of a microstrip reflectarray. Two main factors limiting the bandwidth are considered. One is related to the requirement of phase compensation to convert a spherical wavefront launched by a feed into a planar wavefront. The other one is linked to the limited phasing range of microstrip antenna elements. The two factors contribute to the reflectarray phasing errors that in turn reduce its gain as a function of frequency. Simple formulas for an upper bound of gain bandwidth are derived, assuming the phase compensation by the elements is independent of frequency changes and verified against the results produced by other researchers. It is shown that the phase errors incurred in the path equalization to obtain conversion from spherical to planar wavefronts have a more profound effect on the reduction of operational bandwidth of the reflectarray than the phase truncation implemented on the required phase from each element.

Citation:
M. E. Bialkowski and K. H. Sayidmarie, "Bandwidth Considerations for a Microstrip Reflectarray," Progress In Electromagnetics Research B, Vol. 3, 173-187, 2008.
doi:10.2528/PIERB07120405
http://www.jpier.org/pierb/pier.php?paper=07120405

References:
1. Pozar, D. M. and T. A. Metzler, "Analysis of a reflectarray antenna using microstrip patches of variable size," Electronics Letters, Vol. 29, No. 8, 657-658, 1993.
doi:10.1049/el:19930440

2. Huang, J. and R. J. Pogorzelski, "Microstrip reflectarray with elements having variable rotation angles," IEEE AP-S Symposium Digest, 1280-1283, 1997.
doi:10.1109/APS.1997.631800

3. Robinson, A. W., M. E. Bialkowski, and H. J. Song, "A passive reflect-array with dual-feed microstrip patch elements," Microwave and Optical Technology Letters, Vol. 23, No. 5, 295-299, 1999.
doi:10.1002/(SICI)1098-2760(19991205)23:5<295::AID-MOP11>3.0.CO;2-H

4. Bozzi, M., S. Germani, and L. Perregrini, "Performance comparison of different element shapes used in printed reflectarrays," IEEE Antennas and Wireless Prop. Letters, Vol. 2, 219-222, 2003.
doi:10.1109/LAWP.2003.819687

5. Encinar, J. A., "Design of two-layer printed reflectarrays using patches of variable size," IEEE Trans. Antennas and Propagation, Vol. 49, No. 10, 1403-1410, 2001.
doi:10.1109/8.954929

6. Chaharmir, M. R., J. Shaker, M. Cuhaci, and A. Ittipiboon, "A broadband reflectarray with double square rings as the cell elements," Microwave and Optical Technology Letters, Vol. 48, No. 7, 1317-1320, 2006.
doi:10.1002/mop.21630

7. Chaharmir, M. R., J. Shaker, M. Cuhaci, and A. Ittipiboon, "Broadband reflectarray antenna with double cross loops," Electronics Letters, Vol. 42, No. 2, 65-66, 2006.
doi:10.1049/el:20063299

8. Li, H., B.-Z. Wang, and P. Du, "Novel broadband reflectarray antenna with windmill-shaped elements for millimeter-wave application," Int. Journal of Infrared & Milimetere Waves, 339-344, 2007.
doi:10.1007/s10762-007-9218-8

9. Li, H., B.-Z. Wang, and W. Shao, "Novel broadband reflectarray antenna with compound-cross-loop elements for millimetre-wave applications," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 10, 1333-1340, 2007.
doi:10.1163/156939307783239528

10. Sayidmarie, K. H. and M. E. Bialkowski, "Investigations into unit cells offering an increased phasing range for single-layer printed reflectarrays," Microwave and Optical Technology Letters, 2008.

11. Sayidmarie, K. H. and M. E. Bialkowski, "Phasing of a microstrip reflectarray using multi-dimensional scaling of its elements," Progress In Electromagnetics Research B, Vol. 2, 125-136, 2008.
doi:10.2528/PIERB07110402

12. Bialkowski, M. E., J. Encinar, A. Zornoza, and F.-C. E. Tsai, "Passive and active printed reflectarrays," Printed Antennas for Wireless Communications, R. Waterhouse (ed.), invited chapter, Ch. 11, 299-330, John Wiley & Sons, 2007.

13. Pozar, D. M., "Bandwidth of reflectarrays," Electronic Letters, Vol. 39, No. 21, 1490-1491, 2003.
doi:10.1049/el:20030990

14. Huang, J., "Bandwidth study of microstrip reflectarray and a novel phased reflectarray concept," IEEE APS-URSI Symp. Dig., 582-585, Newport Beach, CA, USA, 1995.

15. Pozar, D. M., S. D. Targonski, and H. D. Syrigos, "Design of millimeter wave microstrip reflectarray," IEEE Trans. Antennas and Propagat., Vol. 45, 287-296, 1997.
doi:10.1109/8.560348


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