IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0282955
(2002-10-28)
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발명자
/ 주소 |
- Chiang, Bing
- Palmer, William R.
- Gothard, Griffin K.
- Snyder, Christopher A.
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출원인 / 주소 |
|
대리인 / 주소 |
Hamilton Brook Smith & Reynolds, P.C.
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인용정보 |
피인용 횟수 :
5 인용 특허 :
9 |
초록
▼
A directional antenna having a number, N, of outlying monopole antenna elements. These monopole elements are formed as a first upper conductive segment on a portion of a dielectric substrate. The array also includes the same number, N, of image elements. The image elements are formed as a second set
A directional antenna having a number, N, of outlying monopole antenna elements. These monopole elements are formed as a first upper conductive segment on a portion of a dielectric substrate. The array also includes the same number, N, of image elements. The image elements are formed as a second set of lower conductive segments on the same substrate as the upper conductive segments. The image elements, generally having the same length and shape as the monopole elements, are connected to a ground reference potential. To complete the array, an active antenna element is also disposed on the same substrate, adjacent to at least one of the monopole elements. In a preferred arrangement, the passive monopole elements and corresponding image elements are selectively connected to operate to in either a reflective or directive mode, such as via a switchable coupling circuit that selectively changes the impedances connected between them.
대표청구항
▼
1. An antenna array comprising:a. a dielectric substrate;b. a plurality, N, of monopole antenna elements, each monopole element comprising an upper conductive segment formed on the dielectric substrate;c. a like plurality, N, of image elements, each image element comprising a lower conductive segmen
1. An antenna array comprising:a. a dielectric substrate;b. a plurality, N, of monopole antenna elements, each monopole element comprising an upper conductive segment formed on the dielectric substrate;c. a like plurality, N, of image elements, each image element comprising a lower conductive segment formed on the dielectric substrate, each of the image elements being disposed on a location on the substrate which is adjacent to a respective one of the monopole elements, and the image elements each connected to a ground reference potential; andd. an active antenna element, disposed on a portion of the dielectric substrate adjacent at least one of the monopole antenna elements. 2. An antenna array as in claim 1 wherein at least one of the N monopole antenna elements is passive. 3. An antenna array as in claim 1 wherein each of the N monopole antenna elements is passive. 4. An antenna array as in claim 1 wherein the image elements are of approximately the same length as the monopole elements. 5. An antenna array as in claim 1 wherein the image elements are of approximately the same shape as the monopole elements. 6. An antenna array as in claim 1 wherein a switch is disposed between at least one of the upper conductive segments and a corresponding lower conductive segment, the switch controlling electromagnetic coupling therebetween. 7. An antenna array as in claim 6 wherein the switch comprises a semiconductor device. 8. An antenna array as in claim 6 wherein the switch further comprises a first impedance element in series with the switch when in a first switch position and a second impedance element in series with the switch when in a second switch position. 9. An antenna array as in claim 6 wherein the switch controllably connects the upper conductive segment to the lower conductive segment such that the corresponding monopole antenna element operates in a reflective mode, and wherein the corresponding monopole antenna element otherwise operates in a directive mode. 10. An antenna array as in claim 1 wherein the plurality, N, of monopole antenna elements is two. 11. An antenna array as in claim 1 additionally comprising a second dielectric substrate also having a plurality, N, of monopole antenna elements and a like plurality, N, of image elements, the second dielectric substrate disposed at a known angle with respect to the said dielectric substrate in a deployed configuration of the array. 12. An antenna array as in claim 1 wherein the monopole elements and image elements are controllably interconnected to either operate in a reflective mode or directive mode. 13. An antenna array as in claim 1 wherein the image elements are electrically connected to each other. 14. An antenna array as in claim 1 wherein the image elements are formed on a common conductive patch formed on the dielectric substrate. 15. An antenna array as in claim 1 wherein the active element is disposed between the N monopole antenna elements on the dielectric substrate. 16. An antenna array as in claim 1 wherein the active element is disposed in approximately a center location of the antenna array.
이 특허에 인용된 특허 (9)
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Rodal Eric B. (Cupertino CA) Detro Michael C. (Los Gatos CA) Gildea David R. (Menlo Park CA) Janky James M. (Sunnyvale CA), Antenna with curved dipole elements.
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Leland H. Bowen ; Everett G. Farr, Collapsible impulse radiating antenna.
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Prater James S. (Fort Collins CO), Communications transceiver using an adaptive directional antenna.
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Rodal Eric B. (Cupertino CA), Curved dipole antenna with center-post amplifier.
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Feller Walter J., Flexible circuit antenna and method of manufacture thereof.
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William Robert Palmer ; Griffin K. Gothard ; Christopher A. Snyder, Foldable directional antenna.
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Reece John Kenneth ; Aden John L., Folded mono-bow antennas and antenna systems for use in cellular and other wireless communication systems.
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Schlegel ; Jr. Herbert ; Blaney Timothy J. ; Difronzo Charles M., Folded monopole antenna for use with portable communications devices.
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William Robert Palmer ; Christopher A. Snyder ; David Charles Jorgenson ; Anh Le, Printed or etched, folding, directional antenna.
이 특허를 인용한 특허 (5)
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Kalokitis, David; Schultz, Leonard Joshua; Polyzois, Christos Alkiviadis; Paragano, Jr., Vincent, Apparatus and method for monitoring and controlling detection of stray voltage anomalies.
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Kalokitis, David; Schultz, Leonard Joshua; Polyzois, Christos Alkiviadis; Paragano, Jr., Vincent, Apparatus and method for monitoring and controlling detection of stray voltage anomalies.
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Kalokitis, David; Schultz, Leonard Joshua; Polyzois, Christos Alkiviadis; Paragano, Jr., Vincent, Apparatus and method for monitoring and controlling detection of stray voltage anomalies.
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Thill, Michel; Gravez, Pierre; Antoine, Matthieu, Dual range radiofrequency communication object and method for implementing same.
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Rock,Janice C., Hybrid-phased communication array.
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