US6061553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adaptive antenna
Assignee: Toshiba Corp
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Filing: 1998-01-02
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Granted: 2000-05-09
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Expires: 2018-01-02
Abstract
Abstract An adaptive antenna is disclosed, that comprises a plurality of antenna elements 1 1 , 1 2 , . . . , and 1 N with different directivity, delay profile measuring units 2 1 , 2 2 , . . . , and 2 N for estimating states of received signals of the antenna elements for each of delay times that have been designated, antenna selecting units 3 1 , 3 2 , . . . , and 3 L for selecting a part of the antenna elements for each of the delay times corresponding to the estimated result, adaptive signal processing portions 4 1 , 4 2 , . . . , and 4 L for determining the received signals of the part of the antenna elements that have been selected and multiplying the received signals to which relevant weights have been determined for each of the delay time and summing the weighted signals, delaying circuits 5 2 and 5 3 for compensating the time lag, or delay of each of the received signals for each of the delay times, and a combining unit 6 for combining the weighted signals that have been compensated for the delay times.
Inventors
- 👤 Hidehiro Matsuoka
- 👤 Hiroki Shoki
- 👤 Akihiro Tsujimura
- 👤 Yasushi Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:40
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/2605; H01Q3/2652; H01Q3/2611
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
An adaptive antenna, comprising: a plurality of antenna elements with different directivity; estimating means for estimating states of received signals of said antenna elements for each of delay times that have been designated; selecting means for selecting a part of said antenna elements for each of the delay times corresponding to the estimated result; weighting means for determining the received signals of the part of said antenna elements selected by said selecting means by relevant weights; first combining means for multiplying the received signals to which relevant weights have been determined for each of the delay time and summing the weighted signals; compensating means for compensating the time lag, or time delay of each of the received signals for each of the delay times; and second combining means for combining the compensated signals for the delay times.
Claim 2
Dependent Claim
137 words
An adaptive antenna, comprising: a plurality of antenna elements with different directivity; estimating means for estimating states of received signals of said antenna elements for each of delay times that have been designated; selecting means for selecting a part of said antenna elements for each of the delay times corresponding to the estimated result; weighting means for determining the received signals of the part of said antenna elements selected by said selecting means by relevant weights; first combining means for multiplying the received signals to which relevant weights have been determined for each of the delay time and summing the weighted signals; compensating means for compensating the time lag, or time delay of each of the received signals for each of the delay times; and second combining means for combining the compensated signals for the delay times.
Claim 3
Dependent Claim
35 words
The adaptive antenna as set forth in claim 1, wherein said estimating means estimates the power, intensity, or signal-to-noise ratio of the received desired signals of said antenna elements for each of the delay times.
Claim 4
Dependent Claim
40 words
The adaptive antenna as set forth in claim 2, wherein said selecting means selects some antenna elements with larger power, intensity, or signal-to-noise ratio of the received desired signal for each of the delay times corresponding to the estimated result.
Claim 5
Dependent Claim
78 words
The adaptive antenna as set forth in claim 2, wherein said selecting means selects at least one first antenna element and at least one second antenna element corresponding to the estimated result, the first antenna elements having larger power, intensity, or signal-to-noise ratio of the received desired signals for a each of the delay time, the second antenna elements having larger power, intensity, or signal-to-noise ratio of the received undesired delayed signals for each of the delay times.
Claim 6
Dependent Claim
77 words
The adaptive antenna as set forth in claim 2, wherein said selecting means selects at least one first antenna element and at least one second antenna element corresponding to the estimated result, the first antenna elements having larger power, intensity, or signal-to-noise ratio of the received desired signals for a each of the delay time, the second antenna elements having larger power, intensity, or signal-to-noise ratio of the received interference signals for each of the delay times.
Claim 7
Dependent Claim
78 words
The adaptive antenna as set forth in claim 5, wherein said second selecting means has: means for generating replicas of signals that said antenna elements receive for each of the delay times corresponding to the estimated result and estimating interference signal signals that said antenna elements receive corresponding to the generated replicas and the received signals of said antenna elements; and means for selecting the second antenna element corresponding to the estimated result of the interference signal signals.
Claim 8
Dependent Claim
143 words
An adaptive antenna, comprising: a plurality of antenna elements for generating respective beams with different directivity; estimating means for estimating states of received signals of beams of said antenna elements for each of delay times that have been designated; selecting means for selecting one beam of a part of said antenna elements corresponding to the estimated result; weighting means for determining the received signals of the beams of the part of said antenna elements selected by said selecting means by relevant weights; first combining means for multiplying the received signals to which relevant weights have been determined for each of the delay time and summing the weighted signals; compensating means for compensating the time lag, or time delay of each of the received signals for each of the delay times; and second combining means for combining the compensated signals for the delay times.
Claim 9
Dependent Claim
143 words
An adaptive antenna, comprising: a plurality of antenna elements for generating respective beams with different directivity; estimating means for estimating states of received signals of beams of said antenna elements for each of delay times that have been designated; selecting means for selecting one beam of a part of said antenna elements corresponding to the estimated result; weighting means for determining the received signals of the beams of the part of said antenna elements selected by said selecting means by relevant weights; first combining means for multiplying the received signals to which relevant weights have been determined for each of the delay time and summing the weighted signals; compensating means for compensating the time lag, or time delay of each of the received signals for each of the delay times; and second combining means for combining the compensated signals for the delay times.
Claim 10
Dependent Claim
36 words
The adaptive antenna as set forth in claim 7, wherein said estimating means estimates the power, intensity, or signal-to-noise ratio of the received signals of beams of said antenna elements for each of the delay times.
References Cited (Backward Citations)
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