RF connector for connecting a mobile radiotelephone to a rack

Details RF connector for connecting a mobile radiotelephone to a rack RF connector for connecting a mobile radiotelephone to a rack

1990-05-22

1991-10-15

Gensler, Paul

Communications: radio wave antennas

Antennas

With radio cabinet

333 24C, 333260, 333 26, 379 58, 343859, H01Q 124, H01P 500

Patent

active

050578472

ABSTRACT:
An RF connector for connecting a radiotelephone (1) to an external antenna, whereby the telephone and a corresponding device rack (2) are connected to the external antenna by two pairs of matching metal plates (1a, 2a, 1b, 2b) that provide a capacitive two-wire connector-interface. In order to avoid too large a size and too high an attenuation, a coil (3a, 3b) is connected in series with the pair of plates (1a, 2a; 1b, 2b) constituting each capacitor. The coil and capacitor are dimensioned so that they form a resonant circuit with an attenuation of nearly 0 at the desired transmission frequency. A first balancing transformer (4) before the resonant circuit transforms the signal into a balanced signal, and a second balancing transformer (5) after the resonant circuit transforms the signal back to an unbalanced signal to be transmitted further on a coaxial cable.

REFERENCES:
patent: 4764773 (1988-08-01), Larsen et al.

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