IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0033788
(2005-01-12)
|
등록번호 |
US-7342553
(2008-03-11)
|
발명자
/ 주소 |
- Soler Castany,Jordi
- Puente Baliarda,Carles
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
24 인용 특허 :
30 |
초록
▼
A monopole or dipole antenna includes a radiating element having at least one notch. The at least one notch intersects at least at one point on an edge of the radiating element wherein the intersecting point is located at a distance to a feeding point. The distance being shorter than half a length o
A monopole or dipole antenna includes a radiating element having at least one notch. The at least one notch intersects at least at one point on an edge of the radiating element wherein the intersecting point is located at a distance to a feeding point. The distance being shorter than half a length of a longest edge of the radiating element. A maximum width of the at least one notch is narrower than a half of a longest length of the at least one notch.
대표청구항
▼
The invention claimed is: 1. An antenna comprising: a radiating element including at least one notch that intersects at least at one point on an edge of said radiating element and at least a portion of said radiating element includes a multilevel structure, said intersecting point is located at a d
The invention claimed is: 1. An antenna comprising: a radiating element including at least one notch that intersects at least at one point on an edge of said radiating element and at least a portion of said radiating element includes a multilevel structure, said intersecting point is located at a distance to a feeding point that is shorter than half a length of the longest edge of said radiating element; and wherein the maximum width of said at least one notch is narrower than half of the length of said at least one notch and said antenna features a similar radiation pattern and input impedance at more than one frequency band. 2. The antenna according to claim 1, wherein the radiating element includes one notch. 3. The antenna according to claim 1, wherein the radiating element includes two notches. 4. The antenna according to claim 1, wherein the radiating element includes two notches, a first notch is inserted at one side of the feeding point, and a second notch is inserted at an opposite side of the feeding point. 5. The antenna according to claim 4, wherein the two notches have similar shapes. 6. The antenna according to claim 1, wherein the radiating element includes at least a first notch and a second notch, said second notch is different in shape from said first notch, being such difference in length, shape or both. 7. The antenna according to claim 1, wherein the antenna includes at least one notch shaped as a curve intersecting itself at least at one point. 8. The antenna according to claim 1, wherein the antenna includes at least two notches, said at least two notches intersecting each other at least at one point. 9. The antenna according to claim 1, wherein a perimeter of said radiating element is a shape chosen from the following set: triangular, square, rectangular, trapezoidal, pentagonal, hexagonal, heptagonal or octagonal. 10. The antenna according to claim 1, wherein a perimeter of said radiating element has a circular or elliptical shape, and for the circular or elliptical shape, the longest edge is considered as a quarter of the perimeter of the circular or elliptical shape. 11. The antenna according to claim 1, wherein the at least one notch is a curve composed by a minimum of two segments and a maximum of nine segments which are connected in such a way that each segment forms an angle with their neighbors and no pair of adjacent segments define a larger straight segment. 12. The antenna according to claim 1, wherein a shape of at least a portion of the at least one notch is a space-filling curve. 13. The antenna according to claim 1, wherein the radiating element includes at least a second conductor parallel to the radiating element, said second conductor being located at a distance from the radiating element smaller than a quarter of a central operating wavelength, and a space between the radiating element and said second conductor is filled with air or a dielectric or a combination of both. 14. The antenna according to claim 1, wherein said antenna is an element of an antenna array, said array including at least a notched-fed antenna. 15. The antenna according to claim 1, wherein the antenna is shorter than a quarter of a central operating wavelength. 16. The antenna according to claim 1, wherein the antenna includes a conducting or superconducting ground-plane. 17. The antenna according to claim 16, wherein the ground-plane is part of a handled case. 18. The antenna of claim 17, wherein the antenna is suitable for mobile communications and is placed inside a cellular phone or handheld wireless terminal. 19. The antenna of claim 17, wherein the antenna is excited by means of a transmission line, said transmission line including first and second conductors, said first conductor being connected to the ground-plane, and said second conductor being connected to a point of the radiating element. 20. The antenna according to claim 17, wherein the radiating element is printed over a dielectric substrate. 21. The antenna according to claim 20, wherein the dielectric substrate is part of the metallic structure of a handled telephone. 22. The antenna according to claim 20, wherein the antenna is adapted to transmit or receive electromagnetic waves of radio, or TV, or cellular telephone in the bands GSM 900, GSM 1800 or UMTS.
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