Miniature radio transceiver antenna

Details Miniature radio transceiver antenna Miniature radio transceiver antenna

1984-09-26

1987-02-17

Lieberman, Eli

Communications: radio wave antennas

Antennas

Spiral or helical type

343702, 343748, H01Q 112, H01Q 136

Patent

active

046443665

ABSTRACT:
A compact, lightweight, printed circuit card antenna which is adaptable to a wide range of frequencies, including very low frequencies. The antenna includes a three-dimensional inductor formed on the card, a peripheral conductor stripe on one side of the card which provides a distributed capacitance to the end of the antenna (to cancel inductive effects and broaden its bandwidth), and a peripheral conductor on the opposite side of the card which provides a capacitance to ground (to tune the antenna to frequency), and a transmission line feed point which provides an impedance match to the associated printed circuit flat cable transmission line without the use of impedance matching circuits.

REFERENCES:
patent: 3231894 (1966-01-01), Nagai
patent: 4038662 (1977-07-01), Turner
patent: 4080585 (1978-03-01), Molthen
patent: 4547776 (1985-10-01), Bolt et al.

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