1 Electronics
In electronics, gain is the logarithm (base 10) of the ratio of signal output from a system to signal input to the system.
A signal is usually measured in units of voltage or power gain. An audio amplifier changing the 1 volt at the input to 10 volts at the output has a gain of 10 dB. That is 10 · log (10/1). The ratio is often expressed in decibels ( dB). For example, if output=500mW and input=5mW then
- gain=500/5 = 100 = 2B ( bel) or 20dB
In antenna design, gain is the logarithm of the ratio of the antenna's radiation pattern to that of some ideal antenna, typically the theoretical isotropic antenna.
It is also known as Unity Gain.
See also
- Main: Federal Standard 1037C, Transmitter power output, Absolute gain, Loop gain, Insertion gainIn telecommunication, insertion gain is the gain resulting from the insertion of a device in a transmission line, expressed as the ratio of the signal power delivered to that part of the line following the device to the signal power delivered to that same, Directive gainIn telecommunication, the term directive gain has the following meanings: 1. Of an antenna, the ratio of a 4 π times the radiance, i. power radiated per unit solid angle (watts per steradian), in a given direction to b the total power, i. the power rad, Signal processing gainIn telecommunication, the term signal processing gain has the following meanings: 1. The ratio of (a) the signal-to-noise ratio of a processed signal to (b) the signal-to-noise ratio of the unprocessed signal. Note Signal processing gain is usually expres, Net gainIn telecommunication, net gain is the overall gain of a transmission circuit. Note 1 Net gain is measured by applying a test signal at an appropriate power level see Note 5 at the input port of a circuit and measuring the power delivered at the output por, Automatic gain controlAutomatic gain control (AGC) is an electronic system found in many types of devices. Its purpose is to control the gain of a system in order to maintain some measure of performance over a changing range of real world conditions. A very common and typical,
- LossLoss has several meanings including: Loss in electronics is the ratio of the system output to system input In electronics, loss is the ratio of system output to system input. Calculation and units used are the same as with Gain, except that the output is: Aperture-to-medium coupling loss, Effective radiated power,
- Other: Space charge, Front-to-back ratio, Fade margin, Maximal-ratio combiner, Neper, Passband, Photocurrent, Transmission level point, Relative transmission level, Transmitter, Karplus-Strong string synthesis, RFID, Antenna (electronics), Frequency response, Frequency compensation
- Items: Tesla coil, Amplifier ( Electronic amplifier, Operational amplifier), Oscilloscope, Collinear antenna array, Darlington transistor, BiCMOS, Active laser medium, Omnidirectional antenna, Helical antenna, Dipole antenna, Yagi antenna, Unity, Nonlinear distortion, Instrument amplifier, Differential amplifier, Tradeoff
