Portable radio equipment, and built-in antenna mounting structure and shielding structure for the portable radio equipment
First Claim
1. A built-in antenna mounting structure for portable radio equipment, comprising:
- a shield chassis formed of molded resin, whose surface except an antenna mounting surface is treated with a conductive material;
a printed wiring board mounted on said shield chassis and having a transmitting/receiving circuit;
a built-in antenna formed from a metal plate and mounted on said antenna mounting surface of said shield chassis, said built-in antenna having a platelike antenna element and an elastic short-circuit plate for short-circuiting said antenna element to said shield chassis, said shield chassis being held at an edge portion thereof between said short-circuit plate and said antenna element, thereby mounting said built-in antenna on said shield chassis; and
a coaxial cable having a core for connecting said transmitting/receiving circuit and said built-in antenna, said core of said coaxial cable being soldered to said antenna element at a position spaced a given distance from said short-circuit plate.
1 Assignment
0 Petitions
Accused Products
Abstract
A built-in antenna mounting structure for portable radio equipment, including a shield chassis formed of molded resin, whose surface except an antenna mounting surface is treated with a conductive material, a printed wiring board mounted on the shield chassis and having a transmitting/receiving circuit, and a built-in antenna formed from a metal plate and mounted on the antenna mounting surface of the shield chassis. The built-in antenna has a platelike antenna element and an elastic short-circuit plate for short-circuiting the antenna element to the shield chassis. The shield chassis is held at an edge portion thereof between the short-circuit plate and the antenna element, thereby mounting the built-in antenna on the shield chassis.
38 Citations
12 Claims
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1. A built-in antenna mounting structure for portable radio equipment, comprising:
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a shield chassis formed of molded resin, whose surface except an antenna mounting surface is treated with a conductive material; a printed wiring board mounted on said shield chassis and having a transmitting/receiving circuit; a built-in antenna formed from a metal plate and mounted on said antenna mounting surface of said shield chassis, said built-in antenna having a platelike antenna element and an elastic short-circuit plate for short-circuiting said antenna element to said shield chassis, said shield chassis being held at an edge portion thereof between said short-circuit plate and said antenna element, thereby mounting said built-in antenna on said shield chassis; and a coaxial cable having a core for connecting said transmitting/receiving circuit and said built-in antenna, said core of said coaxial cable being soldered to said antenna element at a position spaced a given distance from said short-circuit plate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A shielding structure for portable radio equipment, comprising:
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a shield chassis formed of molded resin, whose surface is treated with a conductive material; a multilayer printed wiring board mounted on said shield chassis, said multilayer printed wiring board having one surface on which a high-frequency oscillator, a high-frequency filter, and an isolator are mounted; a metal shield plate having a body portion and an elastically deformable tongue bent at substantially right angles to said body portion, said metal shield plate being mounted on said multilayer printed wiring board so that said tongue is in pressure contact with said shield chassis and said high-frequency oscillator is isolated from said high-frequency filter and said isolator by said body portion; and positioning means for positioning said metal shield plate to said multilayer printed wiring board. - View Dependent Claims (8, 9, 10, 11)
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12. A portable radio equipment comprising:
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a shield chassis made of molded resin, whose surface, except for an antenna mounting surface, is treated with a conductive material; a printed wiring board mounted on said shield chassis and having a transmitting/receiving circuit; and a built-in antenna formed from an antenna element and mounted on said antenna mounting surface of said shield chassis, said built-in antenna having an elastic short-circuit plate to short-circuit said antenna element to said shield chassis.
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Specification