Antenna arrangement

• US 9,035,830 B2
• Filed: 09/28/2012
• Issued: 05/19/2015
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Komulainen, Mikko S., Hienonen, Sami, Lepisto, Tommi
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US13/630,018
• Publication Number:
  US 20140091981A1
• Time in Patent Office: 963 Days
• Field of Search: 343/700.MS, 343/702, 343/829, 343/846, 343/893
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/20 characterised by the operating wavebands
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/04 Resonant antennas
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An apparatus for antenna arrangement isolation is described. The apparatus includes a first antenna element (for example, a CMMB TV antenna) having a first radiator component and a second antenna element (for example, a cellular antenna) having a second radiator component. A first portion of the first radiator component is adjacent to a second portion of the second radiator component. The second radiator component is configured with at least one operational frequency range. The first portion of the first radiator corresponds to at least one minimum electric field region of at least one resonant frequency of the first radiator. The at least one resonant frequency of the first radiator overlaps with the at least one operational frequency range. Methods, Apparatus and Computer readable media for providing the antenna arrangement are also described.

Claims

1. An apparatus comprising:

a first antenna element comprising a first radiator component; and

a second antenna element comprising a second radiator component,

where a first portion of the first radiator component is adjacent to a second portion of the second radiator component,

where the second radiator component is configured with at least one operational frequency range,

where the first portion of the first radiator component corresponds to at least one minimum electric field region of at least one resonant frequency of the first radiator component, and

where the at least one resonant frequency of the first radiator component is sufficiently close to in value to one end of the at least one operational frequency range as to cause relatively strong electric field coupling between the first and second radiator components.

2. The apparatus of claim 1, where the first portion of the first radiator component is located at a separation distance of 2 to 15 mm from the second portion of the second radiator component.

3. The apparatus of claim 1, where the first antenna element is a multi-band antenna element.

4. The apparatus of claim 1, where the second antenna element is a multi-band antenna element.

5. The apparatus of claim 1, where an isolation between the first antenna element and the second antenna element is at least −

15 dB.

6. The apparatus of claim 1, where the first radiator component has a length, L, and where the first portion comprises a point located L/2 from a feed point of the first radiator component.

7. The apparatus of claim 1, where the second radiator component has a length, L, and where the second portion comprises a point located L/2 from a feed point of the second radiator component.

8. The apparatus of claim 1, where the at least one resonant frequency of the first radiator component comprises a first resonant frequency and a second resonant frequency.

9. The apparatus of claim 8, where a minimum electric field region of the first resonant frequency and a minimum electric field region of the second resonant frequency are located in the first portion of the first radiator component.

10. The apparatus of claim 8, where the first resonant frequency comprises a first resonance mode of the first radiator component and the second resonant frequency comprises a second resonance mode of the first radiator component.

11. The apparatus of claim 1, where the second antenna element comprises a parasitic radiator and a monopole radiator, and where the second portion of the second radiator component is a portion of the monopole radiator.

12. The apparatus of claim 1, where the first antenna element and the second antenna element share a ground plane.

13. The apparatus of claim 1, where the first antenna element and the second antenna element are fed separately.

14. The apparatus of claim 1, where the first antenna element is a mobile television antenna.

15. The apparatus of claim 1, wherein the at least one resonant frequency of the second radiator is within 10 percent of one end of the at least one operational frequency range.

16. The apparatus of claim 1, wherein the at least one resonant frequency of the second radiator overlaps the at least one operational frequency range.

17. A method comprising:

selecting a first antenna element comprising a first radiator component, where the first radiator component is configured with at least one operational frequency range;

selecting a second antenna element comprising a second radiator component based at least in part on the operational frequency range of the first antenna element; and

positioning the first antenna element and the second antenna element such that a first portion of the first radiator component is adjacent to a second portion of the second radiator component,

where the second portion of the second radiator corresponds to at least one minimum electric field region of at least one resonant frequency of the second radiator, and

where the at least one resonant frequency of the second radiator is sufficiently close in value to one end of the at least one operational frequency range as to cause relatively strong electric field coupling between the first and second radiator components.

18. The method of claim 17, where the first portion of the first radiator component is located at a separation distance of 2 to 15 mm from the second portion of the second radiator component.

19. The method of claim 17, where the first radiator component has a length, L, and where positioning the first antenna element and the second antenna element comprises positioning the first antenna element and the second antenna element such that the first portion comprises a point located L/2 from a feed point of the first radiator component.

20. The method of claim 17, where the at least one resonant frequency of the first radiator component comprises a first resonant frequency and a second resonant frequency, where positioning the first antenna element and the second antenna element comprises positioning the first antenna element and the second antenna element such that a minimum electric field region of the first resonant frequency and a minimum electric field region of the second resonant frequency are located in the first portion of the first radiator component.

21. The method of claim 17, wherein the at least one resonant frequency of the second radiator is within 10 percent of one end of the at least one operational frequency range.

22. The method of claim 17, wherein the at least one resonant frequency of the second radiator overlaps the at least one operational frequency range.

23. A non-transitory computer readable medium storing a program of instructions, execution of which by a processor configures an apparatus to perform actions comprising at least:

selecting a first antenna element comprising a first radiator component, where the first radiator component is configured with at least one operational frequency range; and

selecting a second antenna element comprising a second radiator component based at least in part on the operational frequency range of the first antenna element; and

positioning the first antenna element and the second antenna element such that a first portion of the first radiator component is adjacent to a second portion of the second radiator component,

where the second portion of the second radiator corresponds to at least one minimum electric field region of at least one resonant frequency of the second radiator, and

where the at least one resonant frequency of the second radiator is sufficiently close in value to at least one end of the at least one operational frequency range as to cause relatively strong electric field coupling between the first and second radiator components.

24. The non-transitory computer readable medium of claim 23, where the first radiator component has a length, L, and where positioning the first antenna element and the second antenna element comprises positioning the first antenna element and the second antenna element such that the first portion comprises a point located L/2 from a feed point of the first radiator component.

25. The non-transitory computer-readable medium of claim 23, wherein the at least one resonant frequency of the second radiator is within 10 percent of one end of the at least one operational frequency range.

26. The non-transitory computer-readable medium of claim 23, wherein the at least one resonant frequency of the second radiator overlaps the at least one operational frequency range.