Smv. Iyer et Rn. Karekar, THE EFFECT OF DIELECTRIC TRUNCATION ON THE RADIATION OF A MICROSTRIP RING ANTENNA OPERATED AT HIGHER-ORDER MODES, Microwave and optical technology letters, 6(11), 1993, pp. 660-662
Surface wave effects on the radiation of microstrip ring antennas are
studied theoretically using the full-wave solution based on reflection
matrices for a microstrip ring antenna when they are operated at high
er-order modes. The effects on the radiation due to changes in the rad
ius of the truncated dielectric substrate, the thickness, and the perm
ittivity are examined. A choice between TM11 at epsilon(r) = 9.8 or TM
12 at epsilon(r) = 2.2 is suggested. (C) 1993 John Wiley & Sons, Inc.