SU1185267A1 - Panoramic meter of module and phase of complex reflection factor - Google Patents

Abstract

PANORAMIC METER OF THE MODULE AND PHASE OF COMPLEX REFLECTION RATIO (KCO)., Containing sequentially connected reHepatop sweep frequencies and four framing elements, whose output is an input for connecting the studied two-terminal network, the drawers, and the drawers, and the drawers, are used by the drawers, which can be used by the VHFs; the input is with the first output of the control unit, and the output is via a series-connected quadratic detector and a band-pass filter with an input of a linear amplitude detector and a measuring input of the phase meter, the reference input of which is connected to the second output of the control unit, and the output to the phase indicator, module indicator, characterized in that, in order to increase the measurement accuracy of the ECC module when operating in a wide frequency band, a controlled voltage divider is introduced The signal input of which is connected to the output of the linear amplitude detector, the output with the module indicator, the control input with the clock output of the oscillating frequency generator, and the transfer coefficient of the controlled divider (L on the yarn K is calculated by the formula Co. K. sin -2-dGde kg is the transfer coefficient of the controlled voltage divider 00 at D. Der; ate average wavelength; N9. - discrete, the value of the current wavelength.

Description

1 The invention relates to radio measurement of Christmas technology and can be used in automatic measuring systems and devices for tuning radio engineering objects. The purpose of the invention is to improve the measurement accuracy of the ECC module when operating in a wide frequency band. Fig. 1 shows a functional diagram of a panoramic meter of a module and a phase of a complex reflection coefficient; figure 2 - the waveform at the output of the microwave switch. The meter contains a oscillating frequency generator 1, four-element sensor 2, two-terminal 3 under study, microwave switch 4, quadratic detector 5, band-pass filter 6, linear amplitude detector 7, phase meter 8, control unit 9, phase indicator 10, module indicator 11, y divisible divider 12 voltage. The device works in the following way. The constant amplitude signal from the oscillating frequency generator 1 is fed to the four-cell sensor 2 and the two-terminal circuit 3 under study. The field distribution is analyzed using a four-element sensor 2, in which the B elements are spaced apart from each other at a distance D / 4 at an average wavelength . 672 The microwave switch 4 periodically switches each of the communication elements into a common channel. At the output of the microwave switch 4, the signal has the form of a periodic sequence of pulses (Fig. 2), which is detected by a quadratic detector 5. The band-pass filter 6 selects the first harmonic from this signal, the amplitude of which is proportional to the modulus of reflection coefficient of the load under study, but depends on the frequency, creating measurement error. In order to eliminate this error, the signals from the output of the linear amplitude detector 7 are fed to the signal input of the control piece of the voltage body 12, to the control input of which is fed a synchronizing signal generator 1 outputs swept frequency. At the same time, depending on the frequency, the transfer ratio of the controlled voltage divider 12 is in accordance with the law, - “where cd is the transfer coefficient of the controlled voltage divider 12, the voltage at (Dr) sr 1 L; average wavelength and its current discrete value.

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Claims (1)

PANORAMIC METER OF THE MODULE AND PHASES OF AN INTEGRATED REFLECTION COEFFICIENT (CCF). the first output of the control unit, and the output through a series-connected quadratic detector and a band-pass filter with an input of a linear amplitude detector and and the measuring input of the phase meter, the reference input of which is connected to the second output of the control unit, and the output is connected to a phase indicator, a module indicator, characterized in that, in order to improve the accuracy of measuring the KCO module when operating in a wide frequency band, a controlled voltage divider is introduced, a signal input which is connected to the output of the linear amplitude detector, · output - with the module indicator, the control input with the synchronizing output of the oscillating frequency generator, the transmission coefficient of the controlled voltage divider K- counted by the formula where _k .. —-. ^sin -2p K ₆ - transmission coefficient of the controlled voltage divider at A- = D _cf ; L _C p is the average wavelength; - discrete value of the current wavelength. ί 1185267