Portable radio apparatus with coaxial antenna feeder in microphone arm
AssigneeSony Corporation
InventorsHiroki Ito, Seijiro Ishizuka
Life of this patent
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Abstract
In a compact portable telephone, a rotational shaft portion of a microphone arm is freely rotatably coupled to the bottom portion of the housing, and it is used in a first state where the housing and the microphone arm are aligned with each other and in a second state where they are intersected to each other at a predetermined angle. A microphone and a helical antenna are contained in the microphone arm, and the length of the microphone arm is set so that the helical antenna is located at a position higher than the upper surface of the housing in the state where the microphone arm is aligned with the housing, thereby avoiding effecting the antenna by the ground conductor and the shield case of the circuit board in the housing.
Claims12
A portable radio apparatus comprising:
- a cylindrical body containing an antenna;
- a microphone that is freely rotatably coupled to a side portion of a housing of a body of the radio apparatus at one end portion in a central axis direction thereof, and which is used both in a first state where the housing and the cylindrical body are aligned, and in a second state where the housing and the cylindrical body are intersected to each other at a predetermined angle, characterized in that the other end portion of the cylindrical body in the center axis direction is projected outwardly from an end edge of the housing in the first state, and the antenna is embedded into the other portion of the cylindrical body in the center axis direction, wherein the antenna is arranged in a spiral form;
- and
- a coaxial feeder connected to the antenna and having an outer sheath conductor connected to an outer conductor of the coaxial feeder.
A portable radio apparatus comprising a housing;
- an antenna apparatus which includes an antenna conductor contained in a cylindrical body together with a microphone, the cylindrical body being freely rotatably coupled to a side portion of the housing and is used both in a first, state where the housing and the cylindrical body are intersected to each other at a predetermined angle, characterized in that an end portion of the cylindrical body at an opposite end to a rotational shaft side in the center axis direction is projected outwardly from an end edge of the housing in the first state, and the antenna conductor is embedded in the other end portion which is projected from the housing, wherein the antenna conductor is arranged in a spiral form;
- and
- a coaxial feeder connected to the antenna conductor and having an outer sheath conductor connected to an outer conductor of the coaxial feeder.
Dependencies are inferred from the claim text.