Portable receiver

Details Portable receiver Portable receiver

2006-12-12

2006-12-12

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

C343S702000, C343S850000

Reexamination Certificate

active

07148858

ABSTRACT:
A portable receiver includes an antenna to which at least FM broadcast wave is inputted, a matching circuit to which the signal input to the antenna is supplied via minute resistance component, an FM receiver unit with the output of the matching circuit connected thereto, and an earphone connected to the output of the FM receiver unit. The antenna is formed from rigid metal, and its length is shorter than the quarter wavelength of the FM broadcast wave. The matching circuit is formed by reactance element having fine DC resistance. The impedance value of the resistance component as viewed via the resistance component from the matching circuit is nearly equal to the impedance of the matching circuit.

REFERENCES:
patent: 6816712 (2004-11-01), Otaka et al.
patent: 6970140 (2005-11-01), Hibino et al.
patent: 7050016 (2006-05-01), Hibino et al.
patent: 2002-314450 (2002-10-01), None

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