| dbo:abstract
|
- The half-power point is the point at which the output power has dropped to half of its peak value; that is, at a level of approximately -3 dB. In filters, optical filters, and electronic amplifiers, the half-power point is also known as half-power bandwidth and is a commonly used definition for the cutoff frequency. In the characterization of antennas the half-power point is also known as half-power beamwidth and relates to measurement position as an angle and describes directionality. (en)
- 半能點（half-power point）或半能頻寬（half-power bandwidth）是輸出功率降到其最大值一半的點，大約是-3 dB的位置。 濾波器、滤光器、放大器電路常以半能點的頻率為其截止頻率。 在天线特性中，半能點和量測的角度有關，可以指表示天線的。 (zh)
|
| dbo:thumbnail
| |
| dbo:wikiPageID
| |
| dbo:wikiPageLength
|
- 4927 (xsd:nonNegativeInteger)
|
| dbo:wikiPageRevisionID
| |
| dbo:wikiPageWikiLink
| |
| dbp:wikiPageUsesTemplate
| |
| dcterms:subject
| |
| rdfs:comment
|
- The half-power point is the point at which the output power has dropped to half of its peak value; that is, at a level of approximately -3 dB. In filters, optical filters, and electronic amplifiers, the half-power point is also known as half-power bandwidth and is a commonly used definition for the cutoff frequency. In the characterization of antennas the half-power point is also known as half-power beamwidth and relates to measurement position as an angle and describes directionality. (en)
- 半能點（half-power point）或半能頻寬（half-power bandwidth）是輸出功率降到其最大值一半的點，大約是-3 dB的位置。 濾波器、滤光器、放大器電路常以半能點的頻率為其截止頻率。 在天线特性中，半能點和量測的角度有關，可以指表示天線的。 (zh)
|
| rdfs:label
|
- Half-power point (en)
- 半能點 (zh)
|
| owl:sameAs
| |
| prov:wasDerivedFrom
| |
| foaf:depiction
| |
| foaf:isPrimaryTopicOf
| |
| is dbo:wikiPageRedirects
of | |
| is dbo:wikiPageWikiLink
of | |
| is foaf:primaryTopic
of | |
