Exciting dual frequency bands from an antenna component with a dual branch coupling feed

Patent metadata

Field	Value
Publication number	US-9673511-B2
Application number	US-201414492921-A
Country	US
Kind code	B2
Filing date	Sep 22, 2014
Priority date	Sep 22, 2014
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

An antenna element forms a ring slot antenna comprising a first slot and second slot. The antenna element is located on a first surface of a conductive chassis that encases a body or a volume for wireless communication signals to be received or transmitted. A coupling component is located on an opposite side of the conductive chassis and behind the antenna element. The coupling component facilitates a coupling between a communication component and the antenna element as a function of the orientation and geometric shape of the coupling component to facilitate different resonant frequencies via the first and second slots of the antenna element.

First claim

What is claimed is:

1. A system comprising:
a mobile device comprising a memory and a processor coupled to the memory for processing mobile communications at a plurality of operating frequencies;
a conductive chassis comprising a first conductive surface and a second conductive surface opposite to the first conductive surface, and configured to cover the mobile device with a conductive material;
a first antenna element, located on the first conductive surface of the conductive chassis, comprising a first ring portion and a second ring portion forming a ring structure, wherein the ring structure comprises a first ring slot opening and a second ring slot opening between different ends of the first ring portion and the second ring portion, and configured to transmit or receive a wireless communication signal; and
a coupling component located on the second conductive surface opposite to the first conductive surface and coupled to the first antenna element with a communication component for transmitting or receiving the wireless communication signal associated with the first antenna element.

2. The system of claim 1 , wherein the first antenna element comprises a ring slot antenna element.

3. The system of claim 1 , wherein the first ring slot opening and the second ring slot opening are configured to resonant at the plurality of operating frequencies.

4. The system of claim 1 , wherein the first antenna element comprises an engraving into the first conductive surface of the conductive chassis comprising the ring structure with the first ring slot opening and the second ring slot opening to resonant at a first operating frequency and a second operating frequency respectively.

5. The system of claim 1 , wherein the conductive chassis is configured as a ground plane to wirelessly transmit or receive the wireless communication signal.

6. The system of claim 1 , wherein the first antenna element is configured to resonant simultaneously at a first resonant frequency corresponding to the first slot opening and at a second resonant frequency corresponding to the second slot opening of the first antenna element.

7. The system of claim 6 , further comprising:
a second antenna element, located on the first conductive surface of the conductive chassis and within the first antenna element, comprising at least one third slot configured to resonant at a different resonant frequency than the first resonant frequency and the second resonant frequency of the first antenna element.

8. The system of claim 7 , wherein the coupling component is further configured to electromagnetically couple to the first antenna element and the second antenna element to transmit or receive communication signals at three different frequencies concurrently.

9. The system of claim 7 , wherein the second antenna element comprises a slot antenna element configured to resonate at a different frequency than a first frequency at the first ring slot opening and a second frequency at the second ring slot opening from the at least one third slot formed from one or more letters, numbers or symbols within the first antenna element.

10. The system of claim 1 , wherein the first antenna element comprises a Wi-Fi antenna configured to resonate at about 2.4 GHz and about 5 GHz to facilitate dual Wi-Fi communications.

11. The system of claim 1 , wherein the coupling component comprises an open structure having a plurality of different branches with a first corner and a second corner, wherein the first corner and the second corner are orientated to underlie a first slot opening and a second slot opening of the first antenna element respectively.

12. The system of claim 1 , wherein at least two of the plurality of operating frequencies are different from one another.

13. A mobile device comprising:
a communication component configured to transmit and receive mobile communications of a plurality of operating frequencies;
a conductive chassis enclosing the communication component with a ground plane;
a first antenna element, formed on a first surface of the conductive chassis, comprising a ring structure with a first ring slot opening and a second ring slot opening between ends of a first ring portion and a second ring portion forming the ring structure; and
a coupling element formed on a second surface of the conductive chassis configured to transmit or receive the mobile communications between the first antenna element and the communication component.

14. The mobile device of claim 13 , wherein the coupling element is configured to transmit or receive the mobile communications with the first ring slot opening at the first resonating frequency and the second ring slot opening at a second resonating frequency via an electromagnetic coupling to the first antenna element.

15. The mobile device of claim 13 , wherein the coupling element comprises:
a first branch resonating element; and
a second branch resonating element coupled to the first branch resonating element configured to indirectly and electromagnetically couple the first ring slot opening and a second ring slot opening of the first antenna element respectively to the communication component.

16. The mobile device of claim 13 , wherein the coupler is configured as an open ended coupler comprising an opening that is aligned with the first ring slot opening of the first antenna element to facilitate a first resonance at a first frequency and at least one corner that is aligned with the second ring slot opening of the first antenna element to facilitate a second resonance at a second frequency.

17. The mobile device of claim 13 , further comprising:
a second antenna element configured to resonate at a third frequency that is different than resonating frequencies of the first antenna element and located within the first antenna element.

18. The mobile device of claim 15 , wherein the second branch resonating element is shorter than the first branch resonating element.

19. The mobile device of claim 18 , wherein the first branch resonating element is configured to resonate the first ring slot opening of the first antenna element at a first resonating frequency and the second branch resonating element is configured to resonate the second ring slot opening of the first antenna element at a second resonating frequency.

20. The mobile device of claim 19 , wherein the first resonating frequency comprises about 2.4 GHz and the second resonating frequency comprises about 5 GHz to facilitate dual Wi-Fi communications via the first antenna element.

21. A method comprising:
receiving or transmitting a first frequency signal at a first slot opening of a first antenna element between first ends of a first ring portion and a second ring of a ring structure, and a second frequency signal at a second slot opening of the first antenna element between second ends of the first ring portion and the second ring of a ring structure, on a first surface of a conductive chassis surrounding a body;
facilitating communications of the first frequency signal and the second frequency signal being received or transmitted at the first antenna element via a coupler located on a second surface of the conductive chassis that opposes the first surface.

22. The method of claim 21 , further comprising:
aligning a corner of a first branch of the coupler with the first slot opening and a second branch of the coupler with the second slot opening to form an electromagnetic coupling to the first antenna element.

Assignees

• Intel Corp

Inventors

• Lee Kwan Ho
• Yang Songnan
• Konanur Anand
• Karacaoglu Ulun

Classifications

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title

• H01Q1/2291

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title

• H01Q13/10

  Resonant slot antennas · CPC title

• H01Q21/30

  Combinations of separate antenna units operating in different wavebands and connected to a common feeder system · CPC title

• H01Q13/106

  Microstrip slot antennas (patch antenna elements H01Q9/0407) · CPC title