Mobile phone with an antenna structure having improved performance

Abstract

A mobile phone with a FM antenna structure having improved FM performance in a mobile phone. The mobile phone includes a printed FM antenna having a planar structure less than a planar area of the mobile phone, a conductive layer providing a ground plane to the printed FM antenna, the conductive adjacent the printed FM antenna in an electrostatic field relation; and a battery having a planar surface positioned adjacent an opposite side of the conductive layer. The planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced-apart relation improving the FM performance of the printed FM antenna.

1 . A mobile phone with a FM antenna structure having improved performance, the mobile phone comprises:
 a printed FM antenna having a planar structure less than a planar area defined by an outer periphery of the mobile phone;   a conductive layer providing a ground plane to the printed FM antenna, the conductive layer adjacent the printed FM antenna in an electrostatic field relation; and   a battery having a planar surface positioned adjacent an opposite side of the conductive layer, wherein the planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced-apart relation improving performance of the printed FM antenna.   
   
   
       2 . The mobile phone of  claim 1  further comprises:
 a printed circuit board having integrated circuits including transceiver circuitry coupled to the printed FM antenna, the printed circuit board adjacent the battery.   
   
   
       3 . The mobile phone of  claim 2  wherein the integrated circuits further comprise:
 lumped tuning components dependent upon the relation of the printed FM antenna to the battery, wherein the lumped tuning components define an impedance bringing the printed FM antenna into an operational FM band.   
   
   
       4 . The mobile phone of  claim 2  wherein the printed FM antenna further comprises:
 an input/output connection coupled to the transceiver circuitry.   
   
   
       5 . The mobile phone of  claim 4  wherein the input/output connection comprises at least one of:
 a coaxial probe, a printed microstrip, a waveguide, and a coplanar transmission line.   
   
   
       6 . The mobile phone of  claim 1  wherein the printed FM antenna comprises at least one of a monopole, a dipole, an eccentric spiral and a fractal antenna. 
   
   
       7 . The mobile phone of  claim 1  wherein the conductive layer partially encases the battery between the planar structure of the printed FM antenna and the planar surface of the battery. 
   
   
       8 . The mobile phone of  claim 1  wherein the mobile phone case comprises:
 a clamshell structure having a first portion and a second portion coupled by a hinge portion, the first portion including the mobile phone case back cover, the printed FM antenna, the conductive layer, and the battery, the second portion including a display, wherein the first portion and the second portion fold to a substantially parallel position when in a closed position.   
   
   
       9 . The mobile phone of  claim 1  wherein the printed FM antenna comprises:
 an antenna substrate having a dielectric property;   an antenna trace printed onto a planar surface of the antenna substrate; and   a protective layer encapsulating the antenna trace, wherein the planar surface of the antenna substrate having the antenna trace is oriented towards the ground plane.   
   
   
       10 . A mobile phone with a FM antenna structure having improved signal-to-noise performance, the mobile phone comprises:
 a dielectric spacer having a first side and a second side;   a printed FM antenna having a planar structure positioned adjacent the first side of the dielectric spacer;   a conductive layer providing a ground plane adjacent the second side of the dielectric spacer; and   a battery having a planar surface positioned adjacent the conductive layer, wherein the planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced apart relation.   
   
   
       11 . The mobile phone of  claim 10  further comprises:
 a printed circuit board having integrated circuits including transceiver circuitry coupled to the printed FM antenna, the printed circuit board adjacent the battery.   
   
   
       12 . The mobile phone of  claim 11  wherein the integrated circuits further comprise:
 lumped tuning components dependent upon the relation of the printed FM antenna to the battery, wherein the lumped tuning components define an impedance bringing the printed FM antenna into an operational FM band.   
   
   
       13 . The mobile phone of  claim 11  wherein the printed FM antenna further comprises:
 an input/output connection coupled to the transceiver circuitry.   
   
   
       14 . The mobile phone of  claim 13  wherein the input/output connection comprises at least one of:
 a coaxial probe, a printed microstrip, a waveguide, and a coplanar transmission line.   
   
   
       15 . The mobile phone of  claim 10  wherein the printed FM antenna comprises at least one of a monopole, a dipole, an eccentric spiral and a fractal antenna. 
   
   
       16 . The mobile phone of  claim 10  wherein the conductive layer partially encases the battery. 
   
   
       17 . The mobile phone of  claim 10  wherein the mobile phone comprises:
 a clamshell structure having a first portion and a second portion, the first portion including the printed FM antenna, the conductive layer, the dielectric spacer, and the battery, the second portion including a display, wherein the first portion and the second portion fold to a substantially parallel position when placed in a closed position.   
   
   
       18 . The mobile phone of  claim 10  wherein the printed FM antenna comprises:
 an antenna substrate having a dielectric property;   an antenna trace printed onto a planar surface of the antenna substrate; and   a protective layer encapsulating the antenna trace, wherein the planar surface of the antenna substrate having the antenna trace is oriented towards the ground plane.   
   
   
       19 . A mobile phone with a FM antenna structure having improved FM performance, the mobile phone comprises:
 a clamshell structure having a first portion coupled to a second portion, wherein the first portion and the second portion fold to a substantially parallel position when placed in a closed position, wherein the first portion includes:
 a printed FM antenna having a planar structure less than a planar area of the mobile phone 
 a conductive layer providing a ground plane to the printed FM antenna, the conductive adjacent the printed FM antenna in an electrostatic field relation; and 
 a battery having a planar surface positioned adjacent an opposite side of the conductive layer, wherein the planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced-apart relation improving performance of the printed FM antenna. 
   
   
   
       20 . The mobile phone of  claim 19  wherein the first portion of the clamshell structure further comprises:
 a printed circuit board having integrated circuits including transceiver circuitry coupled to the printed FM antenna, the printed circuit board adjacent the battery.   
   
   
       21 . The mobile phone of  claim 20  wherein the integrated circuits further comprise:
 lumped tuning components dependent upon the relation of the printed FM antenna to the battery, wherein the lumped tuning components define an impedance bringing the printed FM antenna into an operational FM band.   
   
   
       22 . The mobile phone of  claim 19  wherein the printed FM antenna further comprises:
 an input/output connection coupled to the transceiver circuitry.   
   
   
       23 . The mobile phone of  claim 22  wherein the input/output connection comprises at least one of:
 a coaxial probe, a printed microstrip, a waveguide, and a coplanar transmission line.   
   
   
       24 . The mobile phone of  claim 19  wherein the printed FM antenna comprises at least one of a monopole, a dipole, an eccentric spiral and a fractal antenna. 
   
   
       25 . The mobile phone of  claim 19  wherein the conductive layer partially encases the battery. 
   
   
       26 . The mobile phone of  claim 19  wherein the printed FM antenna comprises:
 an antenna substrate having a dielectric property;   an antenna trace printed onto a planar surface of the antenna substrate; and   a protective layer encapsulating the antenna trace, wherein the planar surface of the antenna substrate having the antenna trace is oriented towards the ground plane.   
   
   
       27 . A mobile phone with an FM antenna structure having improved FM performance, the mobile phone comprises:
 a clamshell structure having a first portion coupled to a second portion, wherein the first portion and the second portion fold to a substantially parallel position when placed in a closed position, wherein the first portion includes:
 a dielectric spacer having a first side and a second side; 
 a printed FM antenna having a planar structure positioned adjacent the first side of the dielectric spacer; 
 a conductive layer providing a ground plane adjacent the second side of the dielectric spacer; and 
 a battery having a planar surface positioned adjacent the conductive layer, wherein the planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced apart relation. 
   
   
   
       28 . The mobile phone of  claim 27  further comprises:
 a printed circuit board having integrated circuits including transceiver circuitry coupled to the printed FM antenna, the printed circuit board adjacent the battery.   
   
   
       29 . The mobile phone of  claim 28  wherein the integrated circuits further comprise:
 lumped tuning components dependent upon the relation of the printed FM antenna to the battery, wherein the lumped tuning components define an impedance bringing the printed FM antenna into an operational FM band.   
   
   
       30 . The mobile phone of  claim 27  wherein the printed FM antenna further comprises:
 an input/output connection coupled to the transceiver circuitry.   
   
   
       31 . The mobile phone of  claim 30  wherein the input/output connection comprises at least one of:
 a coaxial probe, a printed microstrip, a waveguide, and a coplanar transmission line.   
   
   
       32 . The mobile phone of  claim 27  wherein the printed FM antenna comprises at least one of a monopole, a dipole, an eccentric spiral and a fractal antenna. 
   
   
       33 . A method for providing an antenna structure for a mobile phone, the method comprises:
 providing a dielectric spacer having a first side and a second side;   positioning a printed FM antenna having a planar structure adjacent the first side of the dielectric spacer;   positioning a battery having a planar surface adjacent the second side of the dielectric spacer, wherein the planar structure of the printed FM antenna and the planar surface of the battery are substantially parallel to each other in a spaced apart relation; and   positioning a conductive material between the printed FM antenna and the battery to provide a ground plane to the printed FM antenna.   
   
   
       34 . The method of  claim 33  further comprises:
 coupling transceiver circuitry of a printed circuit board having integrated circuits including transceiver circuitry to the printed FM antenna, the printed circuit board adjacent the battery.   
   
   
       35 . The method of  claim 34  wherein the integrated circuits further comprise:
 lumped tuning components dependent upon the relation of the printed FM antenna to the battery, wherein the lumped tuning components define an impedance bringing the printed FM antenna into an operational FM band.   
   
   
       36 . The method of  claim 34  wherein the coupling the transceiver circuitry comprises:
 coupling an input/output connection of the printed FM antenna to the transceiver circuitry.   
   
   
       37 . The method of  claim 36  wherein the input/output connection comprises at least one of:
 a coaxial probe, a printed microstrip, a waveguide, and a coplanar transmission line.   
   
   
       38 . The method of  claim 33  wherein the printed FM antenna comprises at least one of a monopole, a dipole, an eccentric spiral and a fractal antenna. 
   
   
       39 . The mobile phone of  claim 33  further comprises:
 providing a conductive layer to the battery, wherein the conductive outer layer provides a ground plane to the printed FM antenna.   
   
   
       40 . The method of  claim 39  wherein the conductive outer layer partially encases the battery.