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...397–438}}</ref> It has many applications in different areas of science and technology. ===Radio coloring=== ...

{{about|radio-frequency (RF) or microwave active circulators|other uses|Circulator (disam ...is an active non-reciprocal three-port device that couples a microwave or radio-frequency signal only to an adjacent [[Port (circuit theory)|port]] in the ...

...V]] transmitter which uses an intermediate frequency signal in addition to radio frequency signal. ...(AF)]], [[Video signal|video (VF)]] etc.) modulates the [[radio frequency|radio frequency (RF)]] signal. These direct modulation transmitters are relativel ...

{{Short description|Map of radio signal strength in an area}} ...how [[radio wave]]s spread across a geographical region. The main types of radio maps are ''signal strength maps'' and ''propagation maps''. Signal strength ...

...nology|publisher=gridinsight.com|accessdate=20 September 2012}}</ref> The technology is used to transmit data from [[Electricity meter|utility meters]] over a s ...nt | country = US | number = 7830874 | status = patent | title = Versatile radio packeting for automatic meter reading systems. | gdate = 2010-11-09 | fdate ...

...radio-telescopes have only one receiver at the focus of the telescope, but radio-telescopes are now starting to be equipped with focal plane arrays, which a ...o wavelengths are large, the resulting feed arrays are amongst the largest radio-astronomy receivers ever built. Examples include the multi-beam arrays on t ...

{{Short description|Type of radio-frequency coupler}} ...is a type of [[Power dividers and directional couplers|coupler]] used in [[Radio frequency|RF]] and [[microwave]] systems. In its simplest form, it is a [[P ...

{{Short description|Radio-astronomy observatory in Western Australia}} ...]], Australia's national science centre in 2009. It lies in a designated [[radio quiet zone]] located near [[Boolardy Station]] in the [[Murchison Shire]] o ...

...ml The Radio Astronomy tutorial] presented by [[Massachusetts Institute of Technology|MIT's]] [[Haystack Observatory]] (Section 6.2.3) [[Category:Antennas (radio)]] ...

{{Short description|Radio standard}} [[File:ICOM IC-F3162dt.jpg|thumb|150px|IDAS Radio IC-F3162DT]] ...

...pering. With this definition we can characterize the multi-port [[Antenna (radio)|antenna]]’s frequency [[Bandwidth (signal processing)|bandwidth]] and [[ra * [[Antenna (radio)]] ...

...based on converting the continuous light energy from a [[pump laser]] to [[radio frequency]] (RF), [[microwave]] or [[mm-wave]] signals. The OEO is characte * modern radar technology, ...

'''Channel sounding''' is a technique that evaluates a radio environment for [[wireless communication]], especially [[MIMO]] systems. Be ...1=Laurenson, D. |author2=Grant, P. |date=September 2006 |title=A review of radio channel sounding techniques |conference=[[EUSIPCO]] |issn=2219-5491 |url=ht ...

...itle=Relation between sunspot number and the Ionospheric index IF2|journal=Radio Science|volume=3|issue=11|pages=1109–1110|bibcode = 1968RaSc....3.1109M |do ...ournal|volume=42|pages=413–418|bibcode = 1975ITUTJ..42..413M }}</ref> of [[radio wave]] [[Absorption (electromagnetic radiation)|absorption]] and [[Reflecti ...

...'' of a [[TV transmitter]] is the [[electric power]] applied to [[antenna (radio)|antenna]] system. [[Category:Television technology]] ...

{{Short description|Models signal dispersion by representing the radio propagation environment by a graph}} ...ultipath propagation in scenarios with multiple scattering, such as indoor radio propagation.<ref name="Pedersen2006" /><ref name="Pedersen2007" /><ref name ...

...erferometric]] array of 1024 6-[[meter]] (20[[Foot (unit)|ft]]) diameter [[radio telescope]]s, operating at 400-800[[megahertz|MHz]], that will be deployed {{Cite journal|author = L. Newburgh|title = HIRAX: A Probe of Dark Energy and Radio Transients ...

...John Wiley & Sons, 2003 (Chapter 12)</ref><ref>RF MEMS Theory, Design and Technology by Gabriel Rebeiz, John Wiley & Sons, 2003 (Chapter 9-10)</ref><ref>Antenna ** [[antenna (radio)|Antenna]] selection: [[dipole]], tapered slot antenna (TSA) ...

{{Short description|Type of fading for radio and other electromagnetic waves.}} ...cations or times. TWDP models fading due to the interference of two strong radio signals and numerous smaller, diffuse signals. ...

...generated [[radio frequency]] [[alternating current]] and was used as a [[radio transmitter]].<ref name="Graf">{{cite book ...it was used briefly around World War I in a few high power [[longwave]] [[radio station]]s to transmit transoceanic [[radiotelegraphy]] traffic, until the ...