Title :
Flat energy density antenna
Author :
Arai, H. ; Iwashita, H. ; Goto, N.
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Kanagawa, Japan
Abstract :
The authors present a feed circuit for the flat energy density antenna for mobile telephone, and measurement results on its input characteristics and radiation pattern at 1.5 GHz. The correlation coefficient between ring patch and notch antenna of less than 0.1 is small enough for diversity branches. To verify the diversity effect of this antenna, the authors measured urban propagation characteristics at 900 MHz and compared them with results for a space diversity antenna. It is confirmed that the flat energy density antenna is appropriate for the diversity antenna of a mobile telephone.<>
Keywords :
antenna feeders; antenna radiation patterns; diversity reception; microstrip antennas; microwave antenna arrays; mobile antennas; 1.5 GHz; 900 MHz; UHF; correlation coefficient; diversity branches; feed circuit; flat energy density antenna; input characteristics; mobile telephone; notch antenna; notch array; radiation pattern; ring patch; urban propagation characteristics; Antenna feeds; Antenna measurements; Antenna radiation patterns; Antennas and propagation; Circuits; Density measurement; Energy measurement; Extraterrestrial measurements; Mobile antennas; Telephony;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.174999
