When a microstrip patch antenna is brought closer than 0.2λ to an identical patch the resonant frequency of that antenna changes from the designed frequency. In this paper numerical results for the resonant frequency are presented from a theoretical analysis of the mutually coupled H-plane microstrip patch antennas with confirming experimental results. We have also established the relation between resonant frequency of E-plane coupled and H-plane coupled microstrip patch antennas.
2. Chair, R., K. Luk, and K. Lee, "Measurement and analysis of miniature multilayer patch antenna," IEEE Trans. Ant. Propagat., Vol. 50, No. 2, 244-250, Feb. 2002.
doi:10.1109/8.998001
3. Chang, E., S. A. Long, and W. F. Richards, "An experimental investigation of electrically thick rectangular microstrip antennas," IEEE Trans. Ant. Propagat., Vol. 34, No. 6, 767-772, Jun. 1986.
doi:10.1109/TAP.1986.1143890
4. Sharma, A. K. and B. Bhat, "Spectral domain analysis of interacting microstrip resonant structures," IEEE Trans. Microwave Theory Tech., Vol. 31, No. 8, 681-685, Aug. 1983.
doi:10.1109/TMTT.1983.1131570
5. Ray, I., M. Khan, D. Mandal, and A. K. Bhattacharjee, "Effect on resonant frequency for E-plane mutually coupled microstrip antennas," Progress In Electromagnetics Research, 2008 (accepted).
6. Sadat, S., M. Houshmand, and M. Roshandel, "Design of a microstrip square-ring slot antenna filled by an H-shape slot for UWB applications," Progress In Electromagnetics Research, Vol. 70, 191-198, 2007.
doi:10.2528/PIER07012002
7. Guney, K. and N. Sarikaya, "Resonant frequency calculation for circular microstrip antennas with a dielectric cover using adaptive network-based fuzzy inference system optimized by various algorithms," Progress In Electromagnetics Research, Vol. 72, 279-306, 2007.
doi:10.2528/PIER07031302
8. Yang, S. L. S., K. F. Lee, A. A. Kishk, and K. M. Luk, "Design and study of wideband single feed circularly polarized microstrip antennas," Progress In Electromagnetics Research, Vol. 80, 45-61, 2008.
doi:10.2528/PIER07110604
9. Ang, B.-K. and B.-K. Chung, "A wideband E-shaped microstrip patch antennas for 5–6 GHz wireless communications," Progress In Electromagnetics Research, Vol. 75, 397-407, 2007.
doi:10.2528/PIER07061909
10. Xia, L., C.-F. Wang, L.-W. Li, P.-S. Kooi, and M.-S. Leong, "Resonant behaviours of microstrip antenna in multilayered media: An efficient full-wave analysis," Progress In Electromagnetics Research, Vol. 31, 55-67, 2001.
doi:10.2528/PIER00052202
11. Gao, S., L. W. Li, and A. Sambell, "FTDT analysis of a dual-frequency microstrip patch antenna," Progress In Electromagnetics Research, Vol. 54, 155-178, 2005.
doi:10.2528/PIER04120102