Rf antenna terminology the purpose of this technical brief is to provide introductory insights into wireless antennas and their characteristics. While standard gain antennas could be used for normal operation, highgain type could be used for achieving greater range or better availability. Antennas definition of antennas by the free dictionary. That document treated antenna gain as a fundamental property, with impedance and polarization as independent properties. Nsma antenna systems standard format for digitized. Antenna standards committee institute of electrical and electronics engineers. They are not necessar ily members of the institute. Antenna standards committee institute of electrical and electronics engineers ieee standards board abstract. To be consistent with the current nsma format but be flexible enough to able to be applied to a variety of commercial antenna types, including terrestrial microwave antennas, base station antennas, and earth station antennas. This standard defines elements and commonly used components in excitation systems and contains definitions for excitation systems applied to synchronous machines. The ansiieee std 1451993, definitions of terms for antennas 3 gives the following definition. Haupt, timed arrays wideband and time varying antenna arrays, hoboken, nj.
Goetz and a great selection of related books, art and collectibles available now at. Pdf ieee standard definitions of terms for antennas semantic. This glossary lists each term that was defined for use in one or more of nercs continentwide or regional reliability standards and adopted by the nerc board of trustees from february 8, 2005 through february 24, 2020. This standard deals with def nitions, terminology, and parameters for antennas and for systems that use. There are at least three different definitions of cross polarization used in the. Others include physical structure and electricalelectromagnetic design. Antenna gain antenna gain is a measure of directivity properties and the efficiency of the antenna. Although the term aerial is defined here, it is only defined to show that it means the same thing as an antenna. The ieee standard definitions of terms for antennas ieee std145 represents a consistent and comprehensive vocabulary suited for the effective communication and understanding of antenna theory.
Ieee is the trusted voice for engineering, computing, and technology information around the globe. How to calculate the dimensions of an antenna in terms of. Antenna definition in the cambridge english dictionary. Used to be called the american standards association asa. Coordinates standards development and publishes standards.
Sts antennas are highly directional, narrowbeam antennas. In electromagnetics, an antennas power gain or simply gain is a key performance number. Ie e e standard definitions of terms for antennas published by the institute of electrical and electronics engineers, inc 345 east 47th street, new york, ny 10017, usa june 22, 1983 sh08 730 authorized licensed use limited to. In the bandwidth section i would include the ieee definition found in bandwidth of an antenna the range of frequencies within which the performance of the antenna, with respect to some characteristic, conforms to a specified standard.
An antenna having the property of radiating or receiving electromagnetic. Ieee sa standards board, ieee standard for definitions of terms for antennas, ieee std. A lot goes into designing antennas but with a little bit of guidance and explanation, antenna users network designers, systems integrators, end users can read through the antenna specifications and choose the right antenna style for their wireless network design. An antenna is a device that transmits andor receives electromagnetic waves. Thus, where a definition implies the use of an anten na in a transmitting situation, its use in a re ceiving situation is also implicit unless speci fically stated otherwise. Directive antenna definition of directive antenna by.
Definitions of terms in the field of antennas are provided. In linear cross polarization schemes, half of the transponders beam their signals to earth in a vertically polarized mode. A 0 dbd gain antenna radiates more energy higher in the vertical plane to reach radio communication sites located in. However, i cant realized the role of eplane and hplane in order to compare two antennas or in designing or analyzing an antenna. Antenna definition of antenna by the free dictionary. Ieee std 100, the ieee standard dictionary of electrical and electronics terms. Ieee standard definitions of terms for radio wave propagation. Most antennas are resonant devices, which operate efficiently over a relatively narrow frequency band. Then a perfectly isotropic antenna radiating 20 dbm would produce the same measured power for the peak angles of our antenna. Ieee standard for definitions of terms for antennas important notice.
The directivity, of an antenna is the maximal value of its directive gain. The ieee standard definitions of terms for antennas ieee std145 represents a consistent and comprehensive vocabulary suited for the effective. The standard provides terms and definitions used in the context of electromagnetic wave propagation relating to the fields of telecommunications, remote sensing, radio astronomy, optical waves, plasma waves, the. Antenna fundamentals an antenna is a device for converting electromagnetic radiation in space into electrical currents in conductors or viceversa, depending on whether it is being used for receiving or for transmitting, respectively. Ieee 14520 ieee standard for definitions of terms for antennas. Ieee std 1451993 revision of ieee std 1451983 ieee standard definitions. I will be grateful if you could help me to understand how. Standards dictionary terms module rendered on righthand side column.
An aperture is an opening or hole, for antennas typically this term refers to the opening of a horn antenna. Ieee standard for definitions of terms for antennas ebook. Ieee standard definitions of terms for antennas ebook. Haupt, timed arrays wideband and time varying antenna. Entergy prefiled evidentiary hearing exhibit ent000106. Ieee standard definitions of terms for antennas ieee. Here and are the zenith angle and azimuth angle respectively in the standard spherical. Ieee standards dictionary online ideal for corporations, universities, and government agencies.
Ieee standardized keywords ieee author center journals. Ieee standard definitions of terms for antennas nasaads. Antenna types antennas can be classified in several ways. In a receiving antenna, the gain describes how well the antenna converts radio waves arriving from a. Ieee knows that using the right keywords in your article can make your article more easily and reliably discoverablewhich leads to a.
Ieee standards documents are developed within the technical committees of the ieee societies and the standards coordinating committees of the ieee standards board. General use of these definitions of terms would eliminate much of the widespread inconsistency concerning antenna. Ie e e definitions of terms for antennas it website. In electromagnetics, an antennas power gain or simply gain is a key performance number which combines the antennas directivity and electrical efficiency. This page on antenna terminology describes terms related to antenna. Examples of this would be passive components such as resistors, inductors and capacitor components or plating. Ideal perfectly matched lossless antenna has efficiency of 1 or 100%. We wil now express the three definitions precisely and in terms. Ieee standard 1451993, realized gain differs from the above definitions of gain. Zoology one of the paired, flexible, segmented sensory appendages on the head of an insect, myriapod, or crustacean functioning.
About the tutorial this tutorial is meant to provide the readers a detailed description of the antennas used in communication systems. Directive gain is represented as, and compares the radiant intensity power per unit solid angle, that an antenna creates in a particular direction against the average value over all directions. An array of dipole antennas mounted in such a manner that every element of each antenna is in an extension, with respect to its long axis, of its counterparts in the other antennas in the array. Directive antenna definition is an antenna that radiates or receives better in some directions than in others. Sign in using your ieee account, or create an account if you do not have one. It is assumed in this standard that an antenna is a passive linear reciprocal device. Use of this web site signifies your agreement to the terms and conditions. Ieee 14520 ieee standard for definitions of terms for antennas ieee on. The specification defines two gain categories for sts antennas. Thus, where a definition implies the use of an anten na in a transmitting situation, its use in a re ceiving situation is also implicit unless speci. Antennas committee institute of electrical and electronics engineers ieee sa standards board abstract. Subsection a subsection is a part of a section constituted by at least a minimum of 20 members. The language used for some already existing terms have been refined.
This is a list of commonly used terms in the emc community and their definitions. Ieee standard glossary of software engineering terminology. The principal terms used in this document are defined in this section. Ieee standard dictionary of electrical and electronics terms. Antenna gain is usually defined as the ratio of the power produced by the. Antenna terminology antenna terms terminology section. Ieee standard definitions of terms for antennas published in. Ieee 14520 ieee standard for definitions of terms for. The following standard definitions of terms for antennas is a comprehensive revision of the 1948 definitions of terms. As an example, suppose the radiated power is measured for an arbitrary antenna. The existence of an ieee standard does not imply that there are no other ways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the ieee standard. Scope it is assumed in this standard that an antenna is a passive linear reciprocal device.
In 1969, ieee standard 145 was published as a list of basic terms of antenna theory and practice. This term is sometimes more relevant in the case of a receiving antenna. Definitions for antennas and for systems that incorporate an antenna as a component of the system are established in this standard. A technique used by the satellite designer to increase the capacity of the satellite transmission channels by reusing the satellite transponder frequencies. Definition and misuse of return loss report of the transactions editorinchief article pdf available in ieee antennas and propagation magazine 512. Electromagnetic waves are often referred to as radio waves. Members of the committees serve voluntarily and without compensation. Pdf definition and misuse of return loss report of the. Ieee transactions on antennas and propagation volume. The ieee standards association published a revision of ieee std 145 in march 2014 1. Ieee standard definitions of terms for antennas book. Use of this website signifies your agreement to the ieee terms and conditions. Dawn recently emerged from solar conjunction, in which the spacecraft is on the opposite side of the sun, limiting communication with antennas on earth.
The definitions of gain, directivity, impedance, and polarization were worded to emphasize this independence. Browse the list of 1 091 antenna abbreviations with their meanings and definitions. New definitions have been added in the fields of wireless technology, robotics, and artificial intelligence. The means by which information is transferred between two or more places. Dawn spacecraft begins approach to dwarf planet ceres, nasa this network is a collection of large antennas at three locations around the globe that communicate with interplanetary spacecraft. Ieee standard dictionary electrical electronics terms.
Ieee standards documents are not intended to ensure safety, security, health, or environmental protection, or ensure against interference with or from other devices or networks. Glossary of satellite terms trackingsat gps satellite. Directional antenna directional antennas are able to pull in signals from greater distances, and because they see in only one direction they are resistant to noise and multipath distortion a problem created when an antenna receives reflections of the desired signal. Ieee helps maximize research and development efficiency with access to the ieee standards dictionary online, a comprehensive database of standards terminology. Voting members all grades of ieee members except students and associates. Suppose the peak power is measured at 90 degrees, and the value is eirp 20 dbm 10 db 0. The definitions in quotation marks are taken from ieee standard definitions of terms for antennas, ieee std 1451983. The terms have received the ieee antenna definitions working groups support for inclusion pending final approval by the antenna standards committee in the next update of the ieee standard for. Information and translations of antennas in the most comprehensive dictionary definitions resource on the web.
Systems manufactures a complete line of affordable, reliable, individually calibrated emc test antennas, preamplifiers, current probes and lowloss, highfrequency cables that satisfy fcc, milstd, vde, iec, and sae testing standards. I antenna system in telecommunications shaoqiu xiao, yan zhang, honglin hu, bailong xiao and bingzhong wang encyclopedia of life support systems eolss antenna and frequency selective surface fss are indicated as the new concepts of modern antenna technologies. The intent of this new nsma standard format for digitized antenna patterns is. Ieee sa standards board, ieee standard for definitions of terms for. Request pdf on jan 1, 2014, antoine roederer and others published ieee standard for definitions of terms for antennas find, read and cite all the research. Like the section, it provides an arena for members to engage in ieee activities at the local level. Antenna efficiency and the genius of the ieee standard for antenna. Antenna efficiency fraction of the radiated power to the power put into antenna. The illustrated dictionary of electronics8th editionhas been revised, clarified, and updated, reflecting technological advances of recent years.
A statement, written or oral, that is not processed in accordance with the ieeesa standards board. Ieee standard for definitions of terms for antennas request pdf. In a transmitting antenna, the gain describes how well the antenna converts input power into radio waves headed in a specified direction. Antenna definitions, or commonly used terms related to antennas, are individually defined for quick reference. The antennas commonly used for lmrboth at base stations and mobile unitsrepresent only a very small portion of all the antenna types. Thus, where a definition implies the use of an antenna in a transmitting situation. Some obsolete terms and definitions have been removed.
You can access the dictionary in three ways within the ieee xplore platform. Bird csiro ict centre po box 76, epping nsw 1710 australia as editorinchief of the transactions, i have noticed over the past year or so that the occasional incorrect use of the term return loss has now grown into a flood of misuse. Ieee standard glossary of software engineering terminology ieee std 61 0. Ieee standard for definition of terms for antennas memorial. Antenna theory and antenna terminology can seem complicated to the uninitiated. Ieee standard for definitions of terms for antennas. It covers antenna gain, antenna beamwidth, antenna figure of merit or gt, antenna radiation pattern, antenna bandwidth, antenna efficiency, antenna impedance, antenna polarization, antenna effective aperture, antenna wavelength, antenna directivity etc. The antenna factor af is defined as the ratio of the incident electromagnetic field to the output voltage from the antenna. A notforprofit organization, ieee is the worlds largest technical professional organization dedicated to.
Operations manual shall not be considered or inferred to be the official position of ieee. The effective aperture area of the antenna is given as 25 a ef f. Antenna efficiency and the genius of the ieee standard for antenna terms article in ieee antennas and propagation magazine 544. This antenna dictionary also purposely covers or defines out dated names for antennas while the main engineering dictionary drops obsolete terms that are no longer used. Ieee and its members inspire a global community to innovate for a better tomorrow through highly cited publications, conferences, technology standards, and professional and educational activities. These are important to the performance of the design, but in general. Antenna theory effective isotropic radiated power eirp. Radiation efficiency is defined by ieee std 1451993 standard definitions of terms for antennas as the ratio of the total power radiated by an antenna to the net power accepted by the antenna from the connected transmitter. It also supersedes the definitions contained in the 1965 test procedure, although the changes in those definitions are few and relatively minor. Iltenns defined ill approved ieee standards through december 1996. Note that the reflection coefficient is defined in terms of. The standard also includes some additional terms that are commonly accepted in these fields.
List of all most popular abbreviated antenna terms defined. It is sometimes expressed as a percentage less than 100, and is frequency dependent. Surface approximations for manufacturingcomponent definitions. After completing this tutorial, you will be able to calculate the parameters of an antenna and decide which antenna suits for which type of application and why. Every effort has been made to be concise and accurate, without talking down to the. Omnidirectional antennas with different gains are used to improve reception and transmission in certain types of terrain. Help readers find your article quickly by using the right ieee standardized keywords.
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