Title :
A flat diversity antenna by disk loaded monopole and three notches
Author :
Hosono, Seiji ; Goto, Naohisa ; Arai, Hiroyuki
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Japan
fDate :
5/1/1994 12:00:00 AM
Abstract :
This paper proposes a flat diversity antenna, consisting of a disk loaded monopole antenna (DLM) and three notch antennas fabricated on the same disk as a vehicular diversity antenna. This paper presents feed circuits for the notch array, and measurement results of the impedance characteristics and radiation patterns of the flat diversity antenna. To verify the diversity effect of this antenna, propagation measurements were made at 900 MHz band. As a result, the new flat diversity antenna is shown to be useful as a diversity antenna of mobile telephone systems
Keywords :
antenna arrays; antenna feeders; antenna testing; diversity reception; mobile antennas; mobile radio systems; monopole antennas; slot antennas; 900 MHz; UHF; disk loaded monopole antenna; feed circuits; flat diversity antenna; impedance characteristics; measurement results; mobile telephone systems; notch array; propagation measurements; radiation patterns; slot antenna; vehicular diversity antenna; Antenna arrays; Antenna feeds; Antenna measurements; Antenna radiation patterns; Antennas and propagation; Circuits; Impedance measurement; Loaded antennas; Mobile antennas; Telephony;
Journal_Title :
Vehicular Technology, IEEE Transactions on
