References
- Chen , W. S. , Wu , C. K. and Wong , K. L. 1998 . Single-feed square-ring microstrip antenna with truncated corners for compact circular polarization operation . Electron. Lett. , 34 : 1045 – 1047 .
- Chen , W. S. , Wu , C. K. and Wong , K. L. 1999 . Square-ring Microstrip antenna with a cross strip for compact circular polarization operation . IEEE Trans. Antennas Propagat. , 47 : 1566 – 1568 .
- Row , J. S. 2004 . Dual-frequency circularly polarized annular-ring microstrip antenna . Electron. Lett. , 40 : 153 – 154 .
- Chen , H. M. and Wong , K. L. 1999 . On the circular polarization operation of annular-ring microstrip antennas . IEEE Trans. Antennas Propagat. , 47 : 1289 – 1292 .
- Chang , E. , Long , S. A. and Richards , W. F. 1986 . Experimental investigation of electrically thick rectangular microstrip antennas . IEEE Trans Antennas Propagat. , 34 : 767 – 772 .
- Hall , P. S. 1987 . Probe compensation in thick microstrip patches . Electron. Lett. , 23 : 606 – 607 .
- Guo , Y. X. , Luk , K. M. and Lee , K. F. 2001 . L-probe proximityfed annular ring microstrip antennas . IEEE Trans. Antennas Propagat. , 49 : 19 – 21 .
- Huynh , T. and Lee , K. F. 1995 . Single-layer single-patch wideband microstrip antenna . Electron. Lett. , 31 : 1310 – 1312 .