DEVICE TO MEASURE COMPLEX COEFFICIENTS OF TRANSMISSION AND REFLECTION OF MICROWAVE QUADRIPOLES Russian patent published in 2013 - IPC G01R27/28 

FIELD: measurement equipment.

SUBSTANCE: in a device for measurement of complex coefficients of transmission and reflection of microwave quadripoles, comprising a two-frequency synthesiser of coherent first and second test microwave signals, a tested microwave quadripole, a two-channel superheterodyne receiver, comprising the first and second microwave mixers, the first and second analogue-to-digital converters, a control computer, an indicator of ratios, the first discretely controlled operational amplifier comprising the first amplifier, the first Ac and first DC resistors, the second discretely controlled operational amplifier comprising the second amplifier and the second alternating resistors, an additional generator, an AC attenuator, an equal-arm divider, a voltmeter, a control unit and six switches, additionally to introduce the first and second current-voltage metres, a calculator and four switches.

EFFECT: increased accuracy of measurement of complex coefficients of transmission and reflection of microwave quadripoles.

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