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天线概念之VSWR (Voltage Standing Wave Ratio)
2013-5-4 10:30
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- For a radio (transmitter or receiver) to deliver power to an antenna, the impedance of the radio and transmission line must be well matched to the antenna's imp ...
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天线概念之H-plane
2013-5-4 10:29
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- The H-plane is a plane that contains the H-field and the direction of maximum radiation from the antenna. As an example, consider a short dipole, the magnetic f ...
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天线概念之Total Radiated Power (TRP)
2013-5-4 10:28
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- Total Radiated Power (TRP) is a measure of how much power is radiated by an antenna when the antenna is connected to an actual radio (or transmitter). TRP is an ...
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天线概念之Front-to-Back Ratio
2013-5-4 10:27
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- The Front-to-Back Ratio is a parameter used in describing directional radiation patterns for antennas. If an antenna has a unique maximum direction, the front-t ...
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天线概念之Total Isotropic Sensitivity (TIS)
2013-5-4 10:27
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- Total Isotropic Sensitivity (TIS) is a commonly quoted specification in the mobile phone industry. This, like Total Radiated Power (TRP) is a parameter that dep ...
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天线概念之Fractional Bandwidth (FBW)
2013-5-4 10:25
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- The fractional bandwidth of an antenna is a measure of how wideband the antenna is. If the antenna operates at center frequency fc between lower frequency f1 an ...
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天线概念之Tapered Baluns
2013-5-4 10:25
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- The principle of operation of a Tapered Balun is presented on this page. This balun is simple to understand - it gradually changes the shape of an unbalanced tr ...
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天线概念之Folded Baluns
2013-5-4 10:24
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- The principle of operation of a Folded Balun is presented on this page (this balun is sometimes called the quarter-wavelength balun). This balun draws a cancell ...
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天线概念之Steering Vector
2013-5-4 10:23
今日头条
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- A steering vector represents the set of phase delays a plane wave experiences, evaluated at a set of array elements (antennas). The phases are specified with re ...
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天线概念之EVM - Error Vector Magnitude
2013-5-4 10:22
今日头条
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- EVM (Error Vector Magnitude) is a measure of how accurately a radio is transmitting symbols within its constellation. EVM is a measure of signal quality, which ...
