Apparatus and method for enhancing low-frequency operation of mobile communication antennas
First Claim
1. Mobile communication apparatus, comprising:
- a housing including communication circuitry and a printed wired board (PWB) formed with a signal terminal for an antenna, and an electrically-conductive ground for said communication circuitry;
an antenna carried by said housing and electrically connected to said signal terminal of the communication circuitry in the PWB, said antenna being designed to operate in at least one radio frequency band;
and an electrically-conductive reflector carried by said PWB and electrically connected to said electrically-conductive ground of the PWB such that said electrically-conductive reflector effectively enlarges said ground of the PWB to load the antenna in said radio frequency band, and thereby to enhance the operating efficiency of the antenna particularly in the lower part of said radio frequency band, and/or to widen said radio frequency band.
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Accused Products
Abstract
The operation of a mobile communication apparatus is enhanced particularly in the lower frequency portion of its bandwidth by connecting an electrically-conductive reflector to the electrically-conductive ground of the printed wired board (PWB) containing the communication circuitry such that the reflector effectively enlarges the ground of the PWB to load the antenna in the lower portion of its radio frequency band. The reflector may include stub reflectors integrally formed on the PWB, or connected thereto, preferably at the end of the PWB opposite to that connected to the antenna. The antenna may be an internal antenna or an external antenna.
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Citations
33 Claims
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1. Mobile communication apparatus, comprising:
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a housing including communication circuitry and a printed wired board (PWB) formed with a signal terminal for an antenna, and an electrically-conductive ground for said communication circuitry;
an antenna carried by said housing and electrically connected to said signal terminal of the communication circuitry in the PWB, said antenna being designed to operate in at least one radio frequency band;
and an electrically-conductive reflector carried by said PWB and electrically connected to said electrically-conductive ground of the PWB such that said electrically-conductive reflector effectively enlarges said ground of the PWB to load the antenna in said radio frequency band, and thereby to enhance the operating efficiency of the antenna particularly in the lower part of said radio frequency band, and/or to widen said radio frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of enhancing the operational efficiency of a mobile communication apparatus in at least one radio frequency band, or to widen its radio frequency band, which apparatus comprises a housing including communication circuitry and a printed wired board (PWB) formed with a signal terminal for an antenna and an electrically-conductive ground for said communication circuitry, and an antenna carried by said housing and electrically connected to said signal terminal of the communication circuitry in the PWB;
characterized in that the operating efficiency of the antenna is enhanced, particularly in the lower portion of said radio frequency band, or its radio frequency band is widened by connecting an electrically-conductive reflector to said electrically-conductive ground of the PWB such that said electrically-conductive reflector effectively enlarges said ground of the PWB to load the antenna in said radio frequency band. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
Specification