Antenna for cellular handset with user adjustable gain
First Claim
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1. A two position cell phone antenna that can be rotatably attached to a upper end of a cell phone wherein in closed mode the antenna will provide low (high linearity mode) gain or in open mode will provide high (improved reference sensitivity) gain comprising:
- an antenna housing attached to a cell phone by a rotatable hinge connected to an upper end of the cell phone wherein said hinge allows said antenna housing to lie flat against a back of the cell phone or rotatably extend out from the back of the cell phone from 90 to 180 degrees;
said antenna housing containing an antenna pattern;
said antenna housing containing a near air dielectric surrounding said antenna pattern;
said antenna housing containing a balun electrically connected to said antenna pattern;
said antenna housing containing a ground strap electrically connecting said balun to unbalanced grounds on a transceiver board contained in said cell phone; and
,said antenna housing containing a high performance mini coaxial cable electrically connecting an unbalanced hot pin on said balun to an input on said transceiver board.
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Abstract
This invention addresses a flip antenna design for mobile devices operating in ISM 900 MHz band. More specifically the present invention addresses the need to change the gain of a transceiver antenna (for mobile devices) with the flip of the antenna without changing any other characteristics of the transceiver.
5 Citations
4 Claims
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1. A two position cell phone antenna that can be rotatably attached to a upper end of a cell phone wherein in closed mode the antenna will provide low (high linearity mode) gain or in open mode will provide high (improved reference sensitivity) gain comprising:
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an antenna housing attached to a cell phone by a rotatable hinge connected to an upper end of the cell phone wherein said hinge allows said antenna housing to lie flat against a back of the cell phone or rotatably extend out from the back of the cell phone from 90 to 180 degrees; said antenna housing containing an antenna pattern; said antenna housing containing a near air dielectric surrounding said antenna pattern; said antenna housing containing a balun electrically connected to said antenna pattern; said antenna housing containing a ground strap electrically connecting said balun to unbalanced grounds on a transceiver board contained in said cell phone; and
,said antenna housing containing a high performance mini coaxial cable electrically connecting an unbalanced hot pin on said balun to an input on said transceiver board. - View Dependent Claims (2, 3, 4)
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Specification