Communications: radio wave antennas – Antennas – High frequency type loops
Patent
1986-03-31
1987-03-03
Lieberman, Eli
Communications: radio wave antennas
Antennas
High frequency type loops
343743, 343744, H01Q 700
Patent
active
046479376
ABSTRACT:
An antenna apparatus including a small loop antenna element fabricated by printed circuit method, a variable capacitor for matching the antenna element to broadcasting frequency and an amplifier for the received signal. The variable capacitor and the amplifier are mounted on a printed circuit board containing the loop antenna element and the variable capacitor is rotatably mounted on the board centrally of the loop antenna element. A second loop antenna element may be mounted either concentrically on the said side of the printed circuit board or on the other side of the board. A second variable capacitor cooperates with the second antenna element and a single manual element controls both capacitors.
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Engineering of Japan, 1980.
Hidaka Kazutaka
Suehiro Kenji
Lieberman Eli
Tokyo Shibaura Denki Kabushiki Kaisha
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