ANTENNA AND COMMUNICATION DEVICE HAVING SAME

• US 20090273523A1
• Filed: 04/14/2009
• Published: 11/05/2009
• Est. Priority Date: 04/30/2008
• Status: Active Grant

• Current Assignee: Socionext Inc.
• Original Assignee: Fujitsu Microelectronics Limited (Fujitsu Limited)
• Inventors: SAKUMA, Masao
• Granted Patent: US 8,144,061 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 1/2275 associated to expansion card or bus, e.g. in PCMCIA, PC cards, Wireless USB
• CPC Class Codes: H01Q 1/243 with built-in 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 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

An antenna device, including a radiating element having a feed portion and a floating conduction member, which is provided between the radiating element and a conduction board having a high-frequency signal source which generates high-frequency signals for supplying to the feed portion, and which is electrically floated.

Claims

1. An antenna device, comprising:

a radiating element having a feed portion; and

a floating conduction member, which is provided between the radiating element and a conduction board having a high-frequency signal source which generates high-frequency signals for supplying to the feed portion, and which is electrically floated.

2. The antenna device according to claim 1, wherein a distance between the radiating element and the conduction board is less than 1/16, and equal to or greater than 1/64 wavelength of resonance frequency signals.

3. The antenna device according to claim 2, wherein the distance between the radiating element and the conduction board is between 1/32 and 1/64 wavelength of resonance frequency signals.

4. The antenna device according to claim 2, further comprising a dielectric member, between the radiating element and the floating conduction member, having a dielectric constant higher than a dielectric constant of air.

5. An antenna device, comprising:

first and second radiating elements, each having a feed portion;

a floating conduction member, which is provided between the first and second radiating elements and a conduction board having a high-frequency signal source which generates high-frequency signals for supplying to the feed portions, and which is electrically floated; and

a conductive connection member, which couples the first and second radiating elements.

6. The antenna device according to claim 5, wherein a distance between the first and second radiating elements, and the conduction board is less than 1/16, and equal to or greater than 1/64 wavelength of resonance frequency signals.

7. The antenna device according to claim 6, wherein the distance between the first and second radiating elements, and the conduction board is between 1/32 and 1/64 wavelength of resonance frequency signals.

8. The antenna device according to claim 6 or claim 7, further comprising a dielectric member, between the first and second radiating elements and the floating conduction member, having a dielectric constant higher than a dielectric constant of air.

9. A transmission device with an antenna, comprising:

a radiating element having a feed portion;

a conduction board having a high-frequency signal source which generates high-frequency signals for supplying to the feed portion; and

a floating conduction member, which is provided between the radiating element and the conduction board, and which is electrically floated.

10. The transmission device according to claim 9, wherein a distance between the radiating element and the conduction board is less than 1/16, and equal to or greater than 1/64 wavelength of resonance frequency signals.

11. The transmission device according to claim 10, wherein the distance between the radiating element and the conduction board is between 1/32 and 1/64 wavelength of resonance frequency signals.

12. The transmission device according to claim 10 or claim 11, further comprising a dielectric member, between the radiating element and the floating conduction member, having a dielectric constant higher than a dielectric constant of air.

13. A transmission device with an antenna, comprising:

first and second radiating elements, each having a feed portion;

a conduction board having first and second high-frequency signal sources which generate high-frequency signals for supplying to the feed portions; and

,

a floating conduction member, which is provided between the first and second radiating elements, and the conduction board, and which is made electrically floating.

14. The transmission device according to claim 13, wherein a distance between the first and second radiating elements, and the conduction board is less than 1/16 wavelength, and equal to or greater than 1/64 wavelength of resonance frequency signals.

15. The transmission device according to claim 13, wherein the distance between the first and second radiating elements, the conduction board is between 1/32 and 1/64 wavelength of resonance frequency signals.

16. The transmission device according to claim 14 or claim 15, further comprising a dielectric member, between the first and second radiating elements and the floating conduction member, having a dielectric constant higher than a dielectric constant of air.