A comparison of the power accepted to the power reflected back from the system, generally with respect to a 50 Ohm line impedance. A VSWR of 1.0 is 100% of power accepted by the antenna, a VSWR of 1.5 is 97%, a VSWR of 2.0 is 89%.

Voltage Standing Wave Ratio. The ratio of maximum voltage to minimum voltage along the line. Expresses the degree of match between the transmission line and the terminating element (antenna). When VSWR is 1:1 the match is perfect, a VSWR of 1.5:1 corresponds to 96% power efficiency.

Voltage Standing Wave Ratio - A measure of the uniformity of impedance along a transmission line, or the quality of the impedance match between a line and the source or load.

Voltage standing wave ratio. The ratio of the maximum value of a standing wave to its minimum value and is related to the return loss by the equation: RL = 20log [(VSWR + 1)/(VSWR-1)] Thus a VSWR of 1.5:1 corresponds to a return loss of 20log(5) = 13.97dB.

The ratio of maximum to minimum of voltage over a single cycle of field variation. Refers to the fact that, with reflections present, fields are periodic, i.e. they vary as a sine wave in intensity. The greater the level of reflection, the greater the so called VSWR (the greater the ratio of maximum to minimum over a single cycle of field variation).

Amount of reflected power expressed as a ratio (Ex. 1.25:1) VSWR increases as frequency increases.

Abbreviation for Voltage Standing Wave Ratio. Reflections present in a cable due to mismatch (faulty termination) combine with the original signal to produce voltage peaks and dips by addition and subtraction. The ratio of the peak-to-dip voltage is termed VSWR. A perfect match with zero reflections produces a VSWR of 1.

voltage standing wave ratio; a measurement of the efficiency of an antenna system; it measures the energy which is projected out and reflected back to the antenna

Voltage standing wave ratio - Measure of the RF interface quality between adjacent RF circuits that require adequate impedance matching for proper transfer of electrical energy at high frequencies

Voltage Standing Wave Ratio. A measure of the reflection, resulting from a ratio of the input signal to the reflected signal. VSWR = (1+L) / (1-L)

See Voltage Standing Wave Ratio and Standing Wave Ratio.

Voltage Standing Wave Ratio. The ratio of the maximum effective voltage to the minimum effective voltage measured along the length of a mismatched radio frequency transmission line.

Voltage Standing Wave Ratio; (see "Standing Wave Ratio").

Voltage Standing Wave Ratio, the ratio of maximum voltage along a transmission line to the minimum voltage expressed with the numerator greater than 1

Abbreviation for Voltage Standing Wave Ratio. The loss due to the mismatch introduced into the signal by the load or source signal path characteristics. Expressed as a ratio of the highest voltage to the lowest voltage found in the signal. Also expressed as Return Loss in dB. The Return Loss expression is the more modern term.

Abbreviation for Voltage Standing Wave Ratio. The ratio of the maximum to minimum voltage set up along a transmission line by reflections.

Voltage Standing Wave Ratio. The ratio of the amplitude of the electrical field or voltage at a voltage maximum to that at an adjacent minimum.

Voltage Standing Wave Ratio. The amount of reflected signal due to impedance mis-match.

VOLTAGE STANDING WAVE RATIO. For a switching card, the loss due to the mismatch introduced into the signal by the card contacts and conductors. Expressed as a ratio of the highest voltage to the lowest voltage found in the signal.

The ratio between the minimum and maximum voltage on a transmission line. An ideal VSWR is 1.0. Ghosting can result as the VSWR increases. It is also a measure of the percentage of reflected power to the total power impinging upon a device.

Voltage Standing Wave Ratio. A comparison of the power transmitted to the power received back from the system with respect to a 50 Ohm line impedance. A VSWR of 1.0 is a 100% efficient antenna, a VSWR of 1.5 is 97%, a VSWR of 2.0 is 89%.

Voltage Standing Wave Ratio. Symbol for watt or wattage.

Voltage Standing Wave Ratio. A measurement of mismatch in a cable, waveguide, or antenna system.

The voltage standing wave ratio of a unit when the in-band signal is incident.

Voltage Standing Wave Ratio. VSWR of the antenna is the ratio of the maximum to minimum values of voltage in the standing wave pattern appearing along a lossless 50 Ohms transmission line with an antenna as the load.

VOLTAGE STANDING WAVE RATIO. In a waveguide, the ratio of the electric field (voltage) at a maximum point to that of an adjacent minimum point.