Rotatable contactless antenna coupler and antenna
First Claim
Patent Images
1. A portable radio comprising:
- a housing;
a hinged flip portion attached to said housing by hinge means for permitting rotation about an axis formed by said hinge means and said housing;
signal processing means for processing RF signals disposed within said housing;
a first antenna disposed within said hinged flip portion; and
coupling means for coupling R.F. signal between said first antenna and said signal processing means partially disposed coaxially within said hinge means, said coupling means comprising a first transformer having a primary coil means and secondary coil means, said primary coil means coupled to said signal processing means, said secondary coil means coupled to said first antenna, said primary coil means and said secondary coil means being positioned coaixally with said hinge means such that substantially constant inductive coupling there between is maintain over a range of rotation and substantially constant signal coupling between said fist antenna and said signal processing means occurs regardless of rotation.
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Abstract
A rotatable contactless RF signal coupler, which couples RF signals between an antenna and an RF signal processor in a portable radio, along with an antenna capable of operating in two modes is described herein. Specifically, the signal coupler includes a transformer that is primarily located within the hinge formed by the housing of the radio and a rotatable flip portion. Substantially constant inductive coupling is maintained in the coupler regardless of rotation. The antenna is capable of operating in a narrow band and a wide band mode to afford antenna operation through varied conditions.
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Citations
16 Claims
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1. A portable radio comprising:
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a housing; a hinged flip portion attached to said housing by hinge means for permitting rotation about an axis formed by said hinge means and said housing; signal processing means for processing RF signals disposed within said housing; a first antenna disposed within said hinged flip portion; and coupling means for coupling R.F. signal between said first antenna and said signal processing means partially disposed coaxially within said hinge means, said coupling means comprising a first transformer having a primary coil means and secondary coil means, said primary coil means coupled to said signal processing means, said secondary coil means coupled to said first antenna, said primary coil means and said secondary coil means being positioned coaixally with said hinge means such that substantially constant inductive coupling there between is maintain over a range of rotation and substantially constant signal coupling between said fist antenna and said signal processing means occurs regardless of rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An antenna system for a portable radio comprising antenna means and rotatable contactless coupling means for coupling RF signals between said antenna means and an RF signal processor in the portable radio, said antenna system disposed substantially within a flip portion of the portable radio that is rotatable with respect to radio housing containing the RF signal processor and attached by hinged means to said radio housing, wherein the rotatable contactless coupling means comprises;
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primary substrate means, operably associated with the RF signal processor, having at least a primary coil disposed on at least one major surface of the primary substrate means for creating magnetic fields of RF signals; secondary substrate means having at least a secondary coil disposed on at least one major surface of the secondary substrate means, operably associated with the antenna means and the primary substrate means, for establishing proportional representations of the RF signals on the secondary coil, wherein the at least one major surface of the secondary substrate means is substantially parallel to and physically separate from the at least one major surface of the primary substrate means; and rotation means, operably associated with the primary substrate means, the secondary substrate means and the hinged means, for allowing the primary substrate means to rotate with respect to the secondary substrate while substantially maintaining a constant inductive coupling between the primary coil and the secondary coil. - View Dependent Claims (9, 10, 11, 12)
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13. A rotatable contactless coupling apparatus comprising:
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primary substrate means having at least a primary coil disposed on at least one major surface of the primary substrate means for creating a magnetic field of a radio frequency signal coupled to the primary coil; secondary substrate means having at least a secondary coil disposed on at least one major surface of the secondary substrate means, operably associated with, and physical separated from, the primary substrate means, for establishing a proportional representation of the radio frequency signal on the secondary coil, wherein the at least one major surface of the secondary substrate means is substantially parallel to the at least one major surface of the primary substrate means; and hinging means, operably associated wit the primary substrate means and the secondary substrate means, for allowing the primary substrate means to rotate with respect to the secondary substrate means while substantially maintaining a constant inductive coupling between the primary coil and the secondary coil. - View Dependent Claims (14, 15, 16)
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Specification