CRLH ANTENNA STRUCTURES

• US 20120001804A1
• Filed: 02/04/2011
• Published: 01/05/2012
• Est. Priority Date: 02/06/2010
• Status: Active Grant

• Current Assignee: Tyco Electronics Services GmbH (TE Connectivity Limited)
• Original Assignee: Tyco Electronics Services GmbH (TE Connectivity Limited)
• Inventors: Pathak, Vaneet, Poilasne, Gregory, Thornwall, Shane, Pasion, Alan, Lopez, Norberto, Gummalla, Ajay, Lee, Tzung-I
• Granted Patent: US 8,604,983 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• 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 5/357 using a single feed point
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A variety of configurations for a CRLH structured antenna in a wireless device are presented. An antenna having portions of the CRLH structure positioned on different layers provides an elevated structure. An antenna is presented having a double folded antenna structure, wherein a cell patch includes extensions on multiple layers of a substrate.

Claims

1. A wireless device, comprising:

a first substrate having a planar surface;

a plurality of elevated substrates, different from the first substrate, each having a planar surface; and

an antenna device, comprising;

a first conductive portion formed on the first substrate; and

at least one or more other conductive portions formed on the plurality of elevated substrates, different from the first substrate,

wherein the planar surface of each elevated substrate is mounted to the planar surface of the first substrate.

2. The wireless device of claim 1, wherein the antenna device is a Composite Right and Left Handed (CRLH) structure, and wherein the first conductive portion and the at least one or more conductive portions form a continuous cell patch.

3. The wireless device of claim 2, wherein the plurality of elevated substrates comprise a first elevated substrate and a second elevated substrate.

4. The antenna of claim 3, wherein the antenna is a unit cell, the first conductive portion forms a feed line structure, main cell patch structure, and via line structure.

5. The antenna of claim 3, wherein the other conductive portion forms an extended meander line on the first elevated substrate and an extended cell patch structure on the second elevated substrate.

6. The antenna of claim 5, wherein the extended meander line is coupled to the feed line structure and the extended cell patch structure is coupled to the main cell patch structure.

7. The wireless device of claim 1, wherein the plurality of elevated substrates are separated by a dielectric material, the wireless device further comprising:

a microphone; and

an antenna device, comprising;

a first conductive portion patterned proximate a first side of the microphone;

a second conductive portion patterned proximate a second side of the microphone, the first side opposite the second side; and

a third conductive portion patterned on the substrate opposite the microphone and electrically coupled to the first and second conductive portions.

8. The wireless device of claim 7, wherein the antenna device is a Composite Right and Left Handed (CRLH) structure.

9. The wireless device of claim 8, wherein the third conductive portion is coupled to the first and second conductive portions through vias positioned through the substrate.

10. The wireless device of claim 8, wherein the antenna is a unit cell, the first conductive portion, the second conductive portion, and the third conductive portion form a cell patch structure.

11. The wireless device of claim 7, wherein the third conductive portion is a cell patch lower extension.

12. The wireless device of claim 7, wherein the second conductive portion is a cell patch upper extension.

13. A wireless device, comprising:

a substrate;

a first portion of a radiating element patterned onto a first side of the substrate;

a second portion of the radiating element patterned onto a second side of the substrate, wherein the first and second portions are patterned as a continuous conductive element;

a feed line capacitively coupled to the radiating element; and

a via line coupled to the radiating element, the via line further coupled to a reference ground,

wherein the radiating element is positioned outside of a footprint of the reference ground.

14. The wireless device of claim 13, wherein the feed line further comprises a launch pad capacitively coupled to the radiating element.

15. The wireless device of claim 13, wherein the substrate is an FR-4 material.

16. The wireless device of claim 13, wherein the substrate comprises a keypad connection area.

17. The wireless device of claim 13, wherein radiating element conforms to a shape of the substrate.

18. A method for manufacturing an antenna, comprising:

forming a first conductive portion on a first layer of the substrate on a first side of a component area;

forming a second conductive portion on the first layer of the substrate on an opposite side of the component area; and

forming a third conductive portion on a second layer of the substrate, the third conductive portion positioned opposite the component area and electrically coupled to the first and second conductive portions.

19. The method of claim 18, wherein forming the first, second or third conductive portion comprises printing a conductive material onto the substrate.

20. The method of claim 18, further comprising conforming the first, second and third conductive portions to a shape of the substrate.