References
- Tam , W. Y. and Luk , K. M. 1991 . Patch antennas on spherical body . IEE Proc. , 138 Feb. : 103 – 108 . Pt. H
- Chen , H. T. and Wong , K. L. 1993 . Analysis of probe-fed sphericalcircular microstrip antennas using cavity model theory . Microwave Opt. Technol. Lett. , 6 Sept. 20 : 705 – 710 .
- Tam , W. Y. and Luk , K. M. 1991 . Resonance in spherical-circular microstrip structures . IEEE Trans. Microwave Theory Tech. , 39 Apr. : 700 – 704 .
- Ke , B. and Kishk , A. A. 1991 . Analysis of spherical-circular microstrip antennas . IEE Proc. , 138 Dec. : 542 – 548 . Pt. H
- Waterhouse , R. B. 1995 . Small microstrip patch antenna . Electronic Letters , 31 ( No. 8 ) : 604 – 605 .
- Kokotoff , D. M. , Waterhouse , R. B. and Aberie , J. T. 1997 . An annular ring coupled to a shorted patch . IEEE Trans. Antenna Propagation , 45 May : 913 – 914 .
- Satpathy , S. K. , Ray , K. P. and Kumar , G. 1998 . Compact shorted variations of circular microstrip antennas . Electronic Letters , 34 Jan. 22 : 137 – 138 .
- Lan , G. L. and Sengupta , D. L. 1985 . Tunable circular patch antennas . Electronic Letters , 21 ( 22 ) Oct. : 1022 – 1023 .
- Bahl , I. J. and Bhartia , P. 1980 . Microstrip Antennas, Artech House .
- Harrington , R. F. 1961 . Time Harmonic Electromagnetic Fields , NY : Mc- Graw-Hill .
- Schelkunoff , S. A. and Friis , H. T. 1952 . Antennas: Theory and practice , New York : John Wiley & Sons, Inc .
- Chakravarty , T. and De , A. 1999 . Design of tunable modes and dual band circular patch antenna using shorting posts . IEE Proc. Pt. H. , 146 ( 3 ) June : 224 – 228 .
- Tam , W. Y. , Lai , A. K. Y. and Luk , K. M. 1995 . Input impedance of spherical microstrip antenna . IEE Proc. Pt. H. , 142 ( 3 ) June : 285 – 288 .
- Gradshteyn , I. S. and Ryzhik , I. M. 1980 . Table of Integrals, Series, and Products , New York : Academic .