Title :
Folded loop antenna for mobile hand-held units
Author :
Katsibas, Konstantinos D. ; Balanis, Constantine A. ; Tirkas, Panayiotis A. ; Birtcher, Craig R.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
fDate :
2/1/1998 12:00:00 AM
Abstract :
The vertical folded loop antenna, modeled as wire and printed radiating element mounted on a conducting box, simulating a cellular telephone with and without dielectric coating, is analyzed. The finite-difference time-domain (FDTD) method is used to calculate radiation patterns and input impedance. The results are compared with measurements and with NEC data. Very good agreement is obtained in all cases. Parasitic loading is used to enhance the bandwidth of the printed element. The antenna meets the design requirements for existing and future mobile communication systems
Keywords :
antenna radiation patterns; antenna testing; cellular radio; coatings; electric impedance; finite difference time-domain analysis; land mobile radio; loop antennas; microstrip antennas; mobile antennas; telephone sets; wire antennas; FDTD method; NEC data; bandwidth; cellular telephone; conducting box; dielectric coating; finite-difference time-domain; input impedance; measurements; mobile communication systems; mobile hand-held units; parasitic loading; perfectly matched layer; printed element; printed radiating element; radiation patterns; vertical folded loop antenna; wire; Analytical models; Antenna radiation patterns; Coatings; Dielectrics; Finite difference methods; Impedance; Mobile antennas; Telephony; Time domain analysis; Wire;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
