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In-built antenna for mobile communication device
| Details |
Inventors: Begic, Stjepan;
Assignee: Telefonaktiebolaget L M Ericsson (publ) (Stockholm, SE)
Primary Examiner: Nguyen; Lee
Assistant Examiner: Tran; Tuan
Attorney, Agent or Firm: Jenkens & Gilchrist, P.C.
An in-built antenna is provided for a mobile phone or other communication device having a main printed circuit board contained within a case, wherein components for transmitting and receiving radio signals are mounted on the main circuit board. An antenna pattern or radiator is etched on the printed circuit board surface mounting the components, in electrical connection with the components, using the same process employed to form the components and connections between them. A ground plane is mounted to the opposing surface of the main printed circuit board, in facing, spaced-apart parallel relationship with the antenna pattern and in spaced-apart parallel relationship with the main printed circuit board. |
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DETAILED DESCRIPTION The present invention provides an in-built antenna which eliminates the conventional antenna connector between the antenna pattern and radio signal transmit and receive components described above.
Thus, the costs associated with such connectors, as well as losses between the antenna pattern and the radio transceiver components caused by the connector, are likewise eliminated.
Moreover, manufacturability of the antenna, and in particular the manufacture of the radiator or antenna pattern, is significantly enhanced as described hereinafter in further detail.
One embodiment of the invention is directed to an in-built antenna apparatus for a mobile communication device having a case, wherein a main printed circuit board within the case is employed to mount electronic transmit and receive components.
The apparatus comprises an antenna pattern formed on a planar surface of the main printed circuit board, a ground plane formed of selected electrically conductive material, and structure for supporting the ground plane within the case, in facing spaced-apart parallel relationship with the antenna pattern.
An element of the antenna pattern extends along the planar surface from the antenna pattern to at least one of the signal communication components.
In a preferred embodiment of the invention, the ground plane comprises a flexible printed circuit board connected to the main printed circuit in spaced-apart relationship.
Preferably, the ground plane is connected to the surface of the main printed circuit board opposing the board surface on which the antenna pattern is formed.
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Ring Tones 
