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Multi-band antenna and apparatus and method for adjusting operating frequency of the multi-band antenna in a wireless communication system
US9666945B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9666945-B2 |
| Application number | US-201013395789-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 17, 2010 |
| Priority date | Sep 17, 2009 |
| Publication date | May 30, 2017 |
| Grant date | May 30, 2017 |
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- Title
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- Abstract
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Abstract
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An apparatus and method for adjusting an operating frequency of a multi-band antenna and a system supporting the same in a wireless communication system are provided, in which a plurality of shorting pins spaced from a radiation patch by difference distances, and a switch connects one of the shorting pins to the radiation patch.
First claim
Opening claim text (preview).
The invention claimed is: 1. A multi-band antenna comprising: a radiation patch directly connected to a feed point; a plurality of shorting pins permanently affixed to each other at one end and spaced from the radiation patch by different distances; and a switch configured to connect one of the shorting pins to a ground plane, wherein a resonant frequency of the multi-band antenna in a low band is a first frequency related to a minimum reflection coefficient of the multi-band antenna in the low band if a distance between a first short pin of the shorting pins and the radiation patch is smaller than a predetermined value, wherein the resonant frequency of the multi-band antenna in the low band is a second frequency being higher than the first frequency in the low band if a distance between a second short pin of the shorting pins and the radiation patch is equal to or larger than the predetermined value, and wherein a length of a first path from the feed point via the first short pin to the ground plane is same as a length of a second path from the feed point via the second short pin to the ground plane. 2. The multi-band antenna of claim 1 , further comprising a controller for controlling the switch to select the one of the shorting pins according to an operating frequency of the multi-band antenna. 3. The multi-band antenna of claim 1 , wherein the multi-band antenna is one of an inverted f-antenna (IFA) or a planar inverted f-antenna (PIFA). 4. A multi-band antenna comprising: a radiation patch directly connected to a feed point; a plurality of shorting pins permanently affixed to each other at one end and spaced from a ground plane of the multi-band antenna by different distances; and a switch configured to connect one of the shorting pins to the ground plane, wherein a resonant frequency of the multi-band antenna in a low band is a first frequency related to a minimum reflection coefficient of the multi-band antenna in the low band if a distance between a first short pin of the shorting pins and the ground plane is smaller than a predetermined value, wherein the resonant frequency of the multi-band antenna in the low band is a second frequency being higher than the first frequency in the low band if a distance between a second short pin of the shorting pins and the radiation patch is equal to or larger than the predetermined value, and wherein a length of a first path from the feed point via the first short pin to the ground plane is same as a length of a second path from the feed point via the second short pin to the ground plane. 5. The multi-band antenna of claim 4 , further comprising a controller for controlling the switch to select the one of the shorting pins according to an operating frequency of the multi-band antenna. 6. The multi-band antenna of claim 4 , wherein the multi-band antenna is one of an inverted f-antenna (IFA) or a planar inverted f-antenna (PIFA). 7. A method for controlling an operating frequency of a multi-band antenna having a radiation patch and a plurality of shorting pins permanently affixed to each other at one end and spaced from the radiation patch by different distances, the method comprising: selecting, by a controller configured to connect one of the shorting pins to a ground plane, the selected shorting pin according to an operating frequency of the multi-band antenna set by the controller; and connecting the selected shorting pin to the ground plane by a switch, wherein the radiation patch is directly connected to a feed point, wherein a resonant frequency of the multi-band antenna in a low band is a first frequency related to a minimum reflection coefficient of the multi-band antenna in the low band if a distance between a first short pin of the shorting pins and the radiation patch is smaller than a predetermined value, wherein the resonant frequency of the multi-band antenna in the low band is a second frequency being higher than the first frequency in the low band if a distance between a second short pin of the shorting pins and the radiation patch is equal to or larger than the predetermined value, and wherein a length of a first path from the feed point via the first short pin to the ground plane is same as a length of a second path from the feed point via the second short pin to the ground plane. 8. The method of claim 7 , wherein the multi-band antenna is one of an inverted f-antenna (IFA) and a planar inverted f-antenna (PIFA). 9. A method for controlling an operating frequency of a multi-band antenna having a radiation patch and a plurality of shorting pins permanently affixed to each other at one end and spaced from a ground plane by different distances, the method comprising: selecting, by a controller configured to connect one of the shorting pins to a ground plane, the selected shorting pin according to an operating frequency of the multi-band antenna set by the controller; and connecting the selected shorting pin to the ground plane by a switch, wherein the radiation patch is directly connected to a feed point, wherein a resonant frequency of the multi-band antenna in a low band is a first frequency related to a minimum reflection coefficient of the multi-band antenna in the low band if a distance between a first short pin of the shorting pins and the ground plane is smaller than a predetermined value, wherein the resonant frequency of the multi-band antenna in the low band is a second frequency being higher than the first frequency in the low band if a distance between a second short pin of the shorting pins and the radiation patch is equal to or larger than the predetermined value, and wherein a length of a first path from the feed point via the first short pin to the ground plane is same as a length of a second path from the feed point via the second short pin to the ground plane. 10. The method of claim 9 , wherein the multi-band antenna is one of an inverted f-antenna (IFA) or a planar inverted f-antenna (PIFA).
Assignees
Inventors
Classifications
by varying the electrical length · CPC title
- H01Q9/0421Primary
with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence) · CPC title
Branching current paths · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9666945B2 cover?
- An apparatus and method for adjusting an operating frequency of a multi-band antenna and a system supporting the same in a wireless communication system are provided, in which a plurality of shorting pins spaced from a radiation patch by difference distances, and a switch connects one of the shorting pins to the radiation patch.
- Who is the assignee on this patent?
- Kwak Yong-Soo, Byun Joon-Ho, Jeong Seong-Tae, and 7 more
- What technology area does this patent fall under?
- Primary CPC classification H01Q9/0421. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 30 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).