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...er density at a distance '''d''' from this source<ref>''Reference data for radio Engineers'', Howard W.Sams co, Indianapolis, 1956, 27-7</ref> Since a [[half wave dipole]] is used, its [[Gain (electronics)|gain]] over an isotropic antenna (<math>\mbox{2.15 dBi} = 1.64</math> ) sh ...

In electronics, '''excess noise ratio''' is a characteristic of a [[noise generator]] such ...ode, the output noise of an amplifier is measured using two input [[Noise (electronics)|noise levels]], and by measuring the output noise factor (referred to as ' ...

...tentional slight [[frequency shift (disambiguation)|shift]] of broadcast [[radio frequency]] (RF), to reduce [[RF interference|interference]] with other tra ...ce from other broadcasters. In principle, each broadcaster has a different radio frequency (planned by the public authority) in a common reception area to a ...

...(electronics)|attenuator]] circuit in electronics whereby the [[topology (electronics)|topology]] of the circuit is formed in the shape of the letter "T". ...pology of an attenuator circuit will usually follow one of the [[Topology (electronics)#Simple filter topologies|simple filter sections]]. However, there is no n ...

{{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 ...

...ower. Likewise, in a receiving antenna it describes the proportion of the radio wave's power intercepted by the antenna which is actually delivered as an e ...hen R. |editor3=Wilson, Mark J. |year=2011 |edition=22 |publisher=American Radio Relay League |location=Newington, CT |isbn=978-0-87259-680-1}}</ref> In pra ...

| publisher = Institute of Electrical and Electronics Engineers This problem has been discussed in electronics literature at least as far back as 1955.<ref name="Zucker">{{cite journal ...

{{Short description|A measuring device used in electronics}} <ref>Reference data for Radio Engineers, Howard W.Sams & co.ITT, {{ISBN|0-672-21218-8}}, p.18-12</ref> i. ...

...t and radio telescope located in a [[radio quiet zone]] at the [[Murchison Radio-astronomy Observatory]] in Western Australia. It is a collaboration between ...ize, sat on a {{convert|30|x|30|m|ft}} ground shield. It is coupled with a radio receiver, with a 100m cable run to a digital spectrometer.<ref name="MIT" / ...

...onductor–insulator–superconductor tunnel junction''' ('''SIS''') – is an [[electronics|electronic]] device consisting of two [[superconductors]] separated by a ve ...tions on Applied Superconductivity | publisher=Institute of Electrical and Electronics Engineers (IEEE) | volume=15 | issue=2 | year=2005 | issn=1051-8223 | doi=1 ...

[[File:IF transformer.JPG|thumb|upright|A double-tuned transformer from a radio receiver [[intermediate-frequency amplifier]] with its screening can remove ...of the amplifier is [[maximally flat]] in the [[passband]] and the [[Gain (electronics)|gain]] is maximum at the [[resonant frequency]]. Designs frequently use a ...

...should not perturb the electromagnetic field and must prevent [[Coupling (electronics)|coupling]] and reflection as much as possible in order to obtain precise r ...f frequencies and is usually made with three independent diode [[detector (radio)|detectors]]; ...

...ped circuits that can produce the impedance inverter function, and [[Stub (electronics)|stubs]] for [[impedance matching]]. At [[radio frequency|radio frequencies]] of upper [[VHF]] or higher up to [[microwave]] frequencies on ...

...William I. |title=Beam Antenna Handbook |edition=5th |year=1976 |publisher=Radio Publications |pages=185–186}}</ref> ''[[Archimedean spiral]] antennas'' are Spiral antennas transmit [[circular polarization|circularly polarized]] radio waves, and will receive linearly polarized waves in any orientation, but wi ...

An '''inverted-F antenna''' is a type of [[Antenna (radio)|antenna]] used in [[wireless communication]], mainly at [[ultrahigh freque ...the [[microstrip]] format, a widely used technology that allows printed [[radio frequency|RF]] components to be manufactured as part of the same [[printed ...

...nalysis Methods of Self-Oscillatory Circuits Efficiency», Journal of Radio Electronics, No 9, (2013). http://jre.cplire.ru/jre/aug13/9/text-engl.html</ref> ...

{{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. ...

...crete modulation of signals for narrow-band communication channels// Radio electronics and communications systems c/c of Izvestiia- vysshie uchebnye zavedeniia ra ...SK). This composite baseband signal is typically used to modulate a main [[radio frequency|RF]] carrier. ...

{{Short description|Problem affecting a class of radio receivers}} ...te frequency'' or ''homodyne'' receivers.}} These translate the received [[radio frequency]] (RF, or [[Passband|pass-band]]) signal directly from the [[Carr ...

...andwidth (signal processing)|bandwidth]] at the expense of reduced [[Gain (electronics)|gain]]. It also produces a sharper [[transition band|transition]] from th ...of passband [[skirt (filtering)|skirts]] and hence improves [[selectivity (radio)|selectivity]].<ref>Pederson & Mayaram, p. 259</ref> ...