Title :
Active dipole antenna for television receiver
Author :
Taguchi, M. ; Wakimoto, Y. ; Komine, I. ; Tanaka, K.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Nagasaki Univ., Japan
Abstract :
The active antenna including a transistor amplifier integrated with a dipole antenna offers advantages such as beam control, low noise and high gain. If a dipole antenna and a transistor are matched at a wider bandwidth, the operating bandwidth of active antenna will be extended. An active dipole antenna for television reception is fabricated on a thin dielectric film by using photoetching techniques. A coplanar waveguide (CPW) consisting of a center strip with two ground planes located parallel to strip is used as a feeder. A transistor amplifier is integrated between the feeding point of antenna and the CPW. The bias voltage for transistor amplifier is supplied through the CPW. In this antenna, the dipole antenna and the input of transistor amplifier is tolerably matched. The input impedance characteristics, the receiving patterns and the actual gain are measured at frequencies from 70 to 770 MHz.<>
Keywords :
active antennas; antenna feeds; antenna radiation patterns; coplanar waveguides; microstrip antennas; receiving antennas; television antennas; television receivers; 70 to 770 MHz; UHF; VHF; active dipole antenna; bandwidth; beam control; bias voltage; coplanar waveguide; feeder; feeding point; gain measurement; ground planes; high gain; input impedance characteristics; low noise; photoetching techniques; receiving patterns; television receiver; television reception; thin dielectric film; transistor amplifier; Active noise reduction; Antenna feeds; Bandwidth; Coplanar waveguides; Dielectric films; Dipole antennas; Low-noise amplifiers; Planar waveguides; Receiving antennas; TV receivers;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407673
