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Datasheet

CSH-SGFB-ccc-UFFR

Cable Assembly Definitions and Useful Formulas

VSWR

- Voltage Standing Wave Ratio. VSWR is a unitless ratio that describes how efficiently power is

transmitted through the cable assembly. A lower VSWR value indicates better performance at a given

frequency. VSWR is easily derived from Return Loss.

VSWR+1

VSWR−1

TRE=η 1− VSWR−1

/4

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Insertion Loss

- The loss of signal power (gain) resulting from the insertion of a device in a transmission line.

Insertion loss can be derived from the power transmitted to the load before the insertion of the component P

T

and the power transmitted to the load after the insertion of the component P

VSWR=10 +1

10 −1

ReturnLoss=−20log VSWR−1

VSWR+1

G =10log (G)

G =G −2.51dB

VSWR−1

VSWR+1

TRE=η∙ 1− VSWR−1

VSWR+1

/4

(dB)=10log