Wideband deformed dipole antenna for LTE and GPS bands

Abstract

A deformed dipole is suggested with trace elements configured for wideband LTE and GPS operation. The deformed dipole comprises a first dipole conductor disposed on a first surface and first side of the circuit board and a second dipole conductor disposed on an opposite surface and opposite side of the circuit board.

The invention claimed is: 
     
       1. A deformed dipole antenna configured for wideband LTE and GPS bands, the antenna comprising:
 a circuit board ( 10 ) having a top surface and a bottom surface, each of the top surface and the bottom surface of the circuit board being divided into a left portion and a right portion of equal proportions forming a left top area, a right top area, a left bottom area, and a right bottom area; 
 a first dipole conductor ( 200 ) disposed on a top right surface of the circuit board, the first dipole conductor comprising:
 a first apex ( 36 ) disposed near a center of the circuit board on the top surface; 
 a first arm section ( 22 ) extending from the first apex to a front peripheral edge (F′) of the circuit board; 
 a first L-shaped section ( 24 ) extending along the front peripheral edge from the first arm to a first L-shaped stub ( 26 ); 
 a first H-shaped section ( 28 ) extending from the first L-shaped stub to a first H-shaped stub ( 30 ); 
 a second arm section ( 23 ) extending from the first apex to a rear peripheral edge (B′) of the circuit board; 
 a second L-shaped section ( 25 ) extending along the rear peripheral edge from the second arm to a second L-shaped stub ( 27 ); 
 a second H-shaped section ( 29 ) extending from the second L-shaped stub to a second H-shaped stub ( 31 ); and 
 a first resonant trace stub ( 20 ) disposed between the first and second L-shaped sections, the first resonant trace stub being coupled to the first apex via a first trace conductor ( 21 ) extending therebetween; 
 
 a second dipole conductor ( 500 ) disposed on a bottom left surface of the circuit board, the second dipole conductor comprising:
 a second apex ( 66 ) disposed near a center of the circuit board on the bottom surface; 
 a third arm section ( 52 ) extending from the second apex to the rear peripheral edge of the circuit board; 
 a third L-shaped section ( 54 ) extending along the rear peripheral edge from the third arm to a first L-shaped stub ( 56 ); 
 a third H-shaped section ( 58 ) extending from the third L-shaped stub to a third H-shaped stub ( 60 ); 
 a fourth arm section ( 53 ) extending from the second apex to the front peripheral edge of the circuit board; 
 a fourth L-shaped section ( 55 ) extending along the front peripheral edge from the fourth arm to a fourth L-shaped stub ( 57 ); 
 a fourth H-shaped section ( 59 ) extending from the fourth L-shaped stub to a fourth H-shaped stub ( 61 ); and 
 a second resonant trace stub ( 50 ) disposed between the third and fourth L-shaped sections, the second resonant trace stub being coupled to the second apex via a second trace conductor ( 51 ) extending therebetween; 
 
 a second conductor solder pad disposed on the top surface and connected to the second apex of the second dipole conductor by a through-via extending through the circuit board. 
 
     
     
       2. The antenna of  claim 1 , further comprising a coaxial cable alignment pad ( 45 ) disposed on the first left surface of the circuit board and configured to aid in the alignment of a coaxial cable between a longitudinal center axis (C′) of the circuit board. 
     
     
       3. The antenna of  claim 1 , wherein said first H-shaped stub is separated from said second H-shaped stub by a first top gap ( 70 ) disposed therebetween. 
     
     
       4. The antenna of  claim 1 , wherein said first L-shaped section is separated from said first resonant trace stub by a second top gap ( 72 ) extending therebetween. 
     
     
       5. The antenna of  claim 1 , wherein said second L-shaped section is separated from said first resonant trace stub by a third top gap ( 71 ) extending therebetween. 
     
     
       6. The antenna of  claim 1 , wherein said first L-shaped stub is separated from said second L-shaped stub by a fourth top gap ( 73 ) extending therebetween. 
     
     
       7. The antenna of  claim 1 , wherein said first H-shaped stub is separated from said first L-shaped stub by a ninth top gap ( 78 ) extending therebetween. 
     
     
       8. The antenna of  claim 7 , said first H-shaped section comprising a first parallel trace coupled to the first L-shaped stub by a first connection extending therebetween along the front peripheral edge of the circuit board. 
     
     
       9. The antenna of  claim 8 , said first parallel trace being further coupled to the first H-shaped stub by a second connection extending therebetween. 
     
     
       10. The antenna of  claim 9 , wherein said second connection is disposed between a seventh top gap ( 76 ) and the ninth top gap. 
     
     
       11. The antenna of  claim 10 , wherein said first parallel trace is separated from the first L-shaped stub by a fifth top gap ( 74 ) extending therebetween. 
     
     
       12. The antenna of  claim 1 , wherein said second H-shaped stub is separated from said second L-shaped stub by a tenth top gap ( 79 ) extending therebetween. 
     
     
       13. The antenna of  claim 7 , said second H-shaped section comprising a second parallel trace coupled to the second L-shaped stub by a third connection extending therebetween along the rear peripheral edge of the circuit board. 
     
     
       14. The antenna of  claim 8 , said second parallel trace being further coupled to the second H-shaped stub by a fourth connection extending therebetween. 
     
     
       15. The antenna of  claim 9 , wherein said fourth connection is disposed between an eighth top gap ( 77 ) and the tenth top gap. 
     
     
       16. The antenna of  claim 10 , wherein said second parallel trace is separated from the second L-shaped stub by a sixth top gap ( 75 ) extending therebetween. 
     
     
       17. The antenna of  claim 1 , wherein the first dipole conductor is a mirror image of the second dipole conductor. 
     
     
       18. An antenna comprising:
 a circuit board having a first surface, a second surface and a peripheral edge;   a first dipole conductor positioned on the first surface of the circuit board comprising:
 a first apex; 
 a first arm section having a first arm section first end and a first arm section second end wherein the first arm section extends in a first direction from the first apex; 
 a first L-shaped section extending from the first arm section second end to a first L-shaped stub; 
 a first H-shaped section extending from the first L-shaped stub to a first H-shaped stub; 
 a second arm section having a second arm section first end and a second arm section second end wherein the second arm section extends in a second direction from the first apex; 
 a second L-shaped section extending from the second arm section second end to a second L-shaped stub; 
 a second H-shaped section extending from the second L-shaped stub to a second H-shaped stub; 
   a first resonant trace stub disposed between the first L-shaped section and the second L-shaped section, the first resonant trace stub being coupled to the first apex via a first trace conductor extending therebetween; and   a second dipole conductor disposed on the second surface of the circuit board.    
     
     
       19. The antenna of claim 18, wherein the first H-shaped section comprises a first parallel trace coupled to the first L-shaped stub by a first connection extending therebetween.  
     
     
       20. The antenna of claim 18, wherein the second H-shaped section comprises a second parallel trace coupled to the second L-shaped stub by a second connection extending therebetween.  
     
     
       21. The antenna of claim 18 wherein the second dipole conductor further comprises:
 a second apex;   a third arm section having a third arm section first end and a third arm section second end wherein the third arm section extends in a first direction from the second apex;   a third L-shaped section extending from the third arm section second end to a third L-shaped stub;   a third H-shaped section extending from the third L-shaped stub to a third H-shaped stub;   a fourth arm section having a fourth arm section first end and a fourth arm section second end wherein the fourth arm section extends in a second direction from the second apex;   a fourth L-shaped section extending from the fourth arm section second end to a fourth L-shaped stub;   a fourth H-shaped section extending from the fourth L-shaped stub to a fourth H-shaped stub;   a second resonant trace stub disposed between the third L-shaped section and the fourth L-shaped section, the second resonant trace stub being coupled to the second apex via a second trace conductor extending therebetween; and   a second conductor solder pad disposed on the first surface and connected to the second apex of the second dipole conductor by a through-via extending through the circuit board.    
     
     
       22. The antenna of claim 21, wherein the third H-shaped section comprises a third parallel trace coupled to the third L-shaped stub by a third connection extending therebetween.  
     
     
       23. The antenna of claim 21, wherein the fourth H-shaped section comprises a fourth parallel trace coupled to the fourth L-shaped stub by a fourth connection extending therebetween.  
     
     
       24. The antenna of claim 18, further comprising a coaxial cable alignment pad disposed on the first surface of the circuit board.