ANTENNA FOR MOBILE RADIOPHONE Russian patent published in 2008 - IPC H01Q1/00 

FIELD: linearly polarized printed-circuit antennas for radiophones operating in ultrahigh-frequency band.

SUBSTANCE: proposed mobile radiophone antenna incorporating dipole and counterpoise, both disposed on one side of insulating strip and connected to feeder, each of them having first and second flat conductors, is provided in addition with third conductor made in the form of flat spiral and connected on one end to first conductor of dipole and expanded on loose end, as well as minimum two flat single-turn inductance coils disposed in parallel with one another either side of third dipole conductor and connected to first and second dipole conductors. Counterpoise also has at least two single-turn inductance coils disposed in parallel with one another and connected to first and second counterpoise conductors. Second conductors of dipole and counterpoise are disposed in central part of insulating strip and connected to feeder. It will be good practice to dispose third conductor of dipole within mobile radiophone case near sound-conducting means and counterpoise, between wiring board and radiophone storage battery in parallel with them.

EFFECT: enhanced efficiency in broad passband.

3 cl, 3 dwg