Dual polarization slot antenna assembly

• US 6,404,394 B1
• Filed: 12/21/2000
• Issued: 06/11/2002
• Est. Priority Date: 12/23/1999
• Status: Expired due to Fees

• Current Assignee: Tyco Electronics Logistics AG (TE Connectivity Limited)
• Original Assignee: Tyco Electronics Logistics AG (TE Connectivity Limited)
• Inventors: Hill, Robert
• Primary Examiner(s): LE, HOANGANH T
• Application Number:
  US09/746,569
• Time in Patent Office: 537 Days
• Field of Search: H01/Q.124, H01/Q.138, H01/Q 1.310, 343/702, 343/700.MS, 343/846, 343/767
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 13/106 Microstrip slot antennas patch antenna elements H01Q9/0407
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H05K 1/141 One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters H05K1/142 and H05K1/147 take precedence
• CPC Class Codes: H05K 2201/048 Second PCB mounted on first PCB by inserting in window or holes of the first PCB
• CPC Class Codes: H05K 3/366 substantially perpendicularly to each other H05K3/361 takes precedence

Abstract

The invention discloses a slot antenna assembly for a wireless communications device having a printed wiring board element defining at least a ground plane and an input/output RF connection point. The antenna assembly further includes a dielectric element having a pair of opposed major surfaces; a conductive feed circuit disposed upon one of the major surfaces, said feed circuit coupled to the RF connection point of the printed wiring board; and a resonator circuit including a pair of resonator arms oriented approximately parallel to each other, said pair of resonator arms being coupled together via a conductive connection and defining a substantially elongate slot, one of said pair of resonator arms being conductively coupled to the feed circuit, and the other of said pair of resonator arms being conductively coupled to the ground plane of the printed wiring board. The slot antenna according to the present invention may be disposed within an associated wireless communications device relative to a ground plane element of a printed wiring board, or may be disposed separately away from the associated wireless communications device.

Claims

1. An antenna assembly for a wireless communications device, comprising:

a printed wiring board element defining at least a ground plane and an input/output RF connection point;

a dielectric element having a pair of opposed major surfaces;

a conductive feed circuit disposed upon one of the major surfaces, said feed circuit coupled to the RF connection point of the printed wiring board; and

a resonator circuit including a pair of resonator arms oriented approximately parallel to each other, said pair of resonator arms being coupled together via a conductive connection and defining a substantially elongate slot, one of said pair of resonator arms being conductively coupled to the feed circuit, and the other of said pair of resonator arms being conductively coupled to the ground plane of the printed wiring board.

2. The antenna assembly of claim 1 wherein the resonator arms are of approximately equal length.

3. The antenna assembly of claim 1, wherein the resonator arms are of approximately equal width.

4. The antenna assembly of claim 1, wherein the dielectric element includes a ground tab and a feed tab.

5. The antenna assembly of claim 1, further comprising:

a matching stub for conductively coupling one of the pair of resonator arms to the ground plane of the printed wiring board.

6. The antenna assembly of claim 1, further comprising:

a conductive plated through-hole for conductively coupling the feed circuit to the resonator circuit.

7. The antenna assembly of claim 1, wherein the dielectric element is substantially planar.

8. The antenna assembly of claim 1, wherein the dielectric element is substantially perpendicular to the printed wiring board.

9. An antenna assembly for receiving and transmitting with linear polarization in conjunction with a wireless communications device, said antenna assembly comprising:

a printed wiring board element defining at least a ground plane and an input/output RF port;

a dielectric element having a pair of opposed major surfaces;

a conductive feed circuit disposed upon one of the major surfaces, said feed circuit coupled to the RF connection port of the printed wiring board; and

a resonator circuit including a pair of resonator arms oriented approximately parallel to each other, said pair of resonator arms being coupled together via a conductive connection and defining a substantially elongate slot, one of said pair of resonator arms being conductively coupled to the feed circuit, and the other of said pair of resonator arms being conductively coupled to the ground plane of the printed wiring board.

10. The antenna assembly of claim 9 wherein the resonator arms are of approximately equal length.

11. The antenna assembly of claim 9, wherein the resonator arms are of approximately equal width.

12. The antenna assembly of claim 9, wherein the dielectric element includes a ground tab and a feed tab.

13. The antenna assembly of claim 9, further comprising:

a matching stub for conductively coupling one of the pair of resonator arms to the ground plane of the printed wiring board.

14. The antenna assembly of claim 9, further comprising:

a conductive plated through-hole for conductively coupling the feed circuit to the resonator circuit.

15. The antenna assembly of claim 9, wherein the dielectric element is substantially planar.

16. The antenna assembly of claim 9, wherein the dielectric element is substantially perpendicular to the printed wiring board.

17. An antenna assembly for a transmitting and receiving an elliptical polarization signal, said antenna assembly comprising:

a printed wiring board element having at least a ground plane and an input/output RF connection point;

a dielectric element having a pair of opposed major surfaces;

a conductive feed circuit disposed upon one of the major surfaces, said feed circuit coupled to the RF connection point of the printed wiring board; and

a resonator circuit including a pair of resonator arms oriented approximately parallel to each other, said pair of resonator arms being coupled together via a conductor and defining a substantially elongate slot, one of said pair of resonator arms being conductively coupled to the feed circuit, and the other of said pair of resonator arms being conductively coupled to the ground plane of the printed wiring board.

18. The antenna assembly of claim 17, wherein the dielectric element includes a ground tab and a feed tab.

19. The antenna assembly of claim 17, further comprising:

a matching stub for conductively coupling one of the pair of resonator arms to the ground plane of the printed wiring board.

20. The antenna assembly of claim 17, further comprising:

a conductive plated through-hole for conductively coupling the feed circuit to the resonator circuit.

21. The antenna assembly of claim 17, wherein the dielectric element is substantially planar.