Portable radio receiver

Details Portable radio receiver Portable radio receiver

1994-05-25

1997-02-25

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

455 89, 455 90, 4552771, 455 333, H04B 106, H04B 700

Patent

active

056067330

ABSTRACT:
A portable radio receiver for diversity reception in which electrical waves having different planes of polarization are received and synthesized at the receiving side using plural antennas. The radio receiver includes a metal casing, an external antenna mounted on one of the surfaces of the metal casing, and a single-side shorted microstrip antenna mounted on a surface of the metal casing so that its shorted surface is at right angles to the main polarization of the external antenna. In this manner, stable directivity and polarization diversity may be achieved in which the main polarization of the external antenna differs from that of the internal antenna and radiation patters are also different between the external antenna and the internal antenna.

REFERENCES:
patent: 3623161 (1971-11-01), Yokohama et al.
patent: 4396242 (1983-08-01), Kurano et al.
patent: 4829521 (1989-05-01), Hashimoto et al.
patent: 4879563 (1989-11-01), Takeda et al.
patent: 5161255 (1992-11-01), Tsuchiya
patent: 5412392 (1995-05-01), Tsunekawa

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