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IEEE 145
Standard Definitions of Terms for Antennas
Year: 2004
Abstract: FOREWORD
Definitions of terms in the field of antennas are provided.
This document is a revision of IEEE Std 145-1983, IEEE Standard Definitions of Terms for Antennas, and corrects minor errors that appeared in that printing. The original standard was issued in 1969.
Scope
It is assumed in this standard that an antenna is a passive linear reciprocal device. Thus, where a definition implies the use of an antenna in a transmitting situation, its use in a receiving situation is also implicit, unless specifically stated otherwise.
When an antenna or group of antennas is combined with circuit elements that are active, nonlinear, or nonreciprocal, the combination is regarded as a system that includes an antenna. Examples of such cases are an adaptive antenna system and a signal-processing antenna system; the complete conical-scanning, monopulse, and compound interferometer systems also fall in this category.
For terms that are quantitative, it is understood that frequency must be specified. For those in which phase or polarization is a significant part of the definition, a coherent source of power is implied. Whenever a term is commonly used in other fields but has specialized significance in the field of antennas, this is noted in the title.
When applying terms pertaining to radiation characteristics, such as gain, polarization, beamwidth, etc., to multiple-beam antennas, each port shall be considered to be that of a separate antenna with a single main beam. For polarization diversity systems that may include active devices, these terms apply to each polarization state for which the antenna is adjusted.
Throughout this standard, where phasors are used, or are implied, the time convention shall be taken to be exp(jωt).
Definitions of terms in the field of antennas are provided.
This document is a revision of IEEE Std 145-1983, IEEE Standard Definitions of Terms for Antennas, and corrects minor errors that appeared in that printing. The original standard was issued in 1969.
Scope
It is assumed in this standard that an antenna is a passive linear reciprocal device. Thus, where a definition implies the use of an antenna in a transmitting situation, its use in a receiving situation is also implicit, unless specifically stated otherwise.
When an antenna or group of antennas is combined with circuit elements that are active, nonlinear, or nonreciprocal, the combination is regarded as a system that includes an antenna. Examples of such cases are an adaptive antenna system and a signal-processing antenna system; the complete conical-scanning, monopulse, and compound interferometer systems also fall in this category.
For terms that are quantitative, it is understood that frequency must be specified. For those in which phase or polarization is a significant part of the definition, a coherent source of power is implied. Whenever a term is commonly used in other fields but has specialized significance in the field of antennas, this is noted in the title.
When applying terms pertaining to radiation characteristics, such as gain, polarization, beamwidth, etc., to multiple-beam antennas, each port shall be considered to be that of a separate antenna with a single main beam. For polarization diversity systems that may include active devices, these terms apply to each polarization state for which the antenna is adjusted.
Throughout this standard, where phasors are used, or are implied, the time convention shall be taken to be exp(jωt).
Subject: antennas
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| contributor author | IEEE - The Institute of Electrical and Electronics Engineers, Inc. | |
| date accessioned | 2017-09-04T17:38:39Z | |
| date available | 2017-09-04T17:38:39Z | |
| date copyright | 03/18/1993 (R 2004) | |
| date issued | 2004 | |
| identifier other | DQMSGBAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/161599 | |
| description abstract | FOREWORD Definitions of terms in the field of antennas are provided. This document is a revision of IEEE Std 145-1983, IEEE Standard Definitions of Terms for Antennas, and corrects minor errors that appeared in that printing. The original standard was issued in 1969. Scope It is assumed in this standard that an antenna is a passive linear reciprocal device. Thus, where a definition implies the use of an antenna in a transmitting situation, its use in a receiving situation is also implicit, unless specifically stated otherwise. When an antenna or group of antennas is combined with circuit elements that are active, nonlinear, or nonreciprocal, the combination is regarded as a system that includes an antenna. Examples of such cases are an adaptive antenna system and a signal-processing antenna system; the complete conical-scanning, monopulse, and compound interferometer systems also fall in this category. For terms that are quantitative, it is understood that frequency must be specified. For those in which phase or polarization is a significant part of the definition, a coherent source of power is implied. Whenever a term is commonly used in other fields but has specialized significance in the field of antennas, this is noted in the title. When applying terms pertaining to radiation characteristics, such as gain, polarization, beamwidth, etc., to multiple-beam antennas, each port shall be considered to be that of a separate antenna with a single main beam. For polarization diversity systems that may include active devices, these terms apply to each polarization state for which the antenna is adjusted. Throughout this standard, where phasors are used, or are implied, the time convention shall be taken to be exp(jωt). | |
| language | English | |
| title | IEEE 145 | num |
| title | Standard Definitions of Terms for Antennas | en |
| type | standard | |
| page | 40 | |
| status | Active | |
| tree | IEEE - The Institute of Electrical and Electronics Engineers, Inc.:;2004 | |
| contenttype | fulltext | |
| subject keywords | antennas | |
| subject keywords | definitions | |
| subject keywords | propagation | |
| subject keywords | terminology |