Portable radio and telephones having notches therein

• US 5,903,822 A
• Filed: 02/01/1996
• Issued: 05/11/1999
• Est. Priority Date: 12/26/1991
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Maeda, Tadahiko, Sekine, Syuichi
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): LE, THANH C
• Application Number:
  US08/593,131
• Time in Patent Office: 1,195 Days
• Field of Search: 455/89, 455/90, 455/128, 455/129, 455/269, 455/280, 455/281, 455/282, 455/300, 455/347, 455/351, 343/702, 343/767, 379/58, 379/59
• US Class Current: 455/575.7
• CPC Class Codes: H01Q 1/242 specially adapted for hand-held use
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/525 between emitting and receiving antennas

Abstract

A portable radio and telephone equipment for transmitting and receiving an electric wave. The portable radio and telephone equipment includes: an antenna for transmitting and receiving an electromagnetic wave; a housing connected to the antenna, having a notch therein; and an internal circuit, connected to the antenna by way of the housing, for generating and receiving the electromagnetic wave. The portable radio and telephone equipment includes: an antenna for transmitting and receiving an electromagnetic wave; an upper portion of a housing connected to the antenna; and a lower portion of a housing connected to the upper portion of the housing via a conductor wire, so that the housing is divided into two portions in order to vary distribution pattern of the electromagnetic wave.

Claims

1. A portable radio device, comprising:

a housing, electrically divided along a horizontal plane into an upper portion and a lower portion in order to lessen influence of the housing exerted upon electromagnetic waves surrounding the housing;

an antenna for transmitting and receiving an electromagnetic wave, the antenna being connected to the upper portion of the housing and extending in a vertical direction; and

conductor wires provided between the upper portion and the lower portion of the housing for electrically coupling the upper and lower portions,

wherein the upper portion and the lower portion of the housing are spatially separated from each other by a horizontal gap, and

wherein the upper portion is approximately a quarter wavelength long in the vertical direction, and the conductor wires are disposed at a distance of approximately a quarter wavelength from a side edge of the lower portion.

2. The portable radio device according to claim 1, further comprising:

an electric element located between the upper portion and the lower portion of the housing for exchanging signals between systems inside of the upper portion and the lower portion of the housing.

3. The portable radio device according to claim 2, wherein:

the electric element is considered to be electrically opened when a radio frequency of the electromagnetic waves become high.

4. The portable radio device according to claim 3, wherein:

the electric element is a coil.

5. The portable radio device according to claim 3, wherein:

the electric element is a ferrite ring.