Antenna arrangement

Abstract

An antenna ( 2 - 20 ) for use in a mobile device ( 1 - 1 ) includes elements for receiving ( 2 - 5, 3 - 1, 4 - 1, 5 - 1, 6 - 5 ) a signal from a satellite positioning system; a first layer of dielectric material ( 2 - 4 a, 2 - 4 b, 3 - 2, 3 - 3, 5 - 2, 4 - 3, 5 - 2, 5 - 3, 6 - 4, 6 - 15 ) and a second layer of dielectric material ( 2 - 4 a, 2 -4 b, 3 - 2, 3 - 3, 5 - 2, 4 - 3, 5 - 2, 5 - 3, 6 - 4, 6 - 15 ), wherein the elements for receiving ( 2 - 5, 3 - 1, 4 - 1, 5 - 1, 6 - 5, 7 - 6 ) the signal is at least partly between the first dielectric layer ( 2 - 4 a, 2 - 4 b, 3 - 2, 3 - 3, 5 - 2, 4 - 3, 5 - 2, 5 - 3, 6 - 4, 6 - 15 ) and the second dielectric layer ( 2 - 4 a, 2 - 4 b, 3 - 2, 3 - 3, 5 - 2, 4 - 3, 5 - 2, 5 - 3, 6 - 4, 6 - 15 ).

1 . An antenna for use in a mobile device or in a stand-alone device, comprising:
 a receiving element adapted to receive a signal from satellite positioning systems;   adapting elements matched to the receiving element to different frequencies from the satellite positioning systems;   a first layer of dielectric material; and   a second layer of dielectric material, wherein the receiving element is configured to be at least partly located between the first dielectric layer and the second dielectric layer.   
     
     
         2 . The antenna according to  claim 1 , wherein at least one of the first and second dielectric layers is adapted to the frequency of the signal. 
     
     
         3 . The antenna according to  claim 1 , wherein at least one of a dielectric constant, a dielectric loss and a thickness of at least one of the first and second dielectric layers is adapted to the frequency of the signal. 
     
     
         4 . The antenna according to  claim 1 , wherein a thickness of the first dielectric layer substantially equals a thickness of the second dielectric layer. 
     
     
         5 . The antenna according to  claim 1 , wherein a thickness of the first and second dielectric layers is one of i) one quarter and ii) one half of a wavelength of the received signal. 
     
     
         6 . The antenna according to  claim 1 , wherein the first dielectric layer is substantially two times thicker than the second dielectric layer. 
     
     
         7 . The antenna according to  claim 1 , wherein a thickness of the first dielectric layer is substantially one half of a wavelength of the received signal and a thickness of the second dielectric layer is substantially one quarter of a wavelength of the received signal. 
     
     
         8 . The antenna according to  claim 1 , wherein the receiving element comprises a wire. 
     
     
         9 . The antenna according to  claim 1 , wherein the receiving element comprises a first metal plane layer, which is configured to be at least partly located between the first dielectric layer and the second dielectric layer, the first metal plane layer being adapted to be coupled with a second metal plane layer, wherein a resonator is formed between the first metal plane layer and the second metal plane layer. 
     
     
         10 . A subscriber identity module comprising the antenna of  claim 1  and one or more contacts for connecting to a mobile device, the antenna further comprising a first metal plane layer as the receiving element which is configured to be at least partly located between the first dielectric layer and the second dielectric layer, the first metal plane layer being adapted to be coupled with a second metal plane layer of the subscriber identity module wherein a resonator is formed between the first metal plane layer and the second metal plane layer. 
     
     
         11 . The subscriber identity module according to  claim 10 , wherein a distance between the metal plane layers is adapted on the basis of the frequency to be received. 
     
     
         12 . The subscriber identity module according to  claim 10 , further comprising an element adapted to determine positioning data at least partly based on a signal from a satellite positioning system. 
     
     
         13 . The subscriber identity module according to  claim 10 , further comprising means to convey the signal from the satellite positioning systems and/or the positioning data via one or more contacts. 
     
     
         14 . The subscriber identity module according to  claim 10 , wherein an effect of a variation of the distance between the first metal plane layer and the second metal plane layer on a detuning effect is controlled statically on the basis of the dielectric constant of the dielectric layer and dynamically via a programmable tuning element for minimizing the detuning effect. 
     
     
         15 . An antenna arrangement for receiving a signal from a satellite positioning system comprising the antenna of  claim 1  and adapted for installation to a mobile device, the antenna further comprising a first metal plane layer as the receiving element, which is configured to be at least partly located between the first dielectric layer and the second dielectric layer, the first metal plane layer being adapted to be coupled with a second metal plane layer of the mobile device, wherein a resonator is formed between the first metal plane layer and the second metal plane layer when the antenna arrangement is installed in the mobile device. 
     
     
         16 . The antenna according to  claim 1 , wherein the resonator is one of capacitive, inductive, dielectric, transconductive and non-radiating. 
     
     
         17 . The antenna according to  claim 1 , wherein the second metal plane layer is a ground layer. 
     
     
         18 . The antenna arrangement according to  claim 15 , wherein an effect of a variation of a distance between the first metal plane layer and the second metal plane layer is controlled statically on the basis of the dielectric constant of the dielectric material and dynamically via a programmable tuning element for minimizing a detuning effect. 
     
     
         19 . The antenna arrangement according to  claim 15 , wherein a distance between the resonator and the ground layer is adapted on the basis of the frequency to be received. 
     
     
         20 . A mobile device comprising:
 an antenna comprising   i) a receiving element adapted to receive a signal from satellite positioning systems,   ii) adapting elements matched to the receiving element to different frequencies from the satellite positioning systems,   iii) a first layer of dielectric material,   iv) a second layer of dielectric material, wherein the receiving element is configured to be at least partly located between the first dielectric layer and the second dielectric layer, and   v) a first metal plane layer as the receiving element which is configured to be at least partly located between the first dielectric layer and the second dielectric layer, the first metal plane layer being adapted to be coupled with a second metal plane layer of the subscriber identity module wherein a resonator is formed between the first metal plane layer and the second metal plane layer, and   vi) one or more contacts connecting the antenna to antenna contacts of the mobile device; and   a further antenna that receives a signal from a mobile communications system.