SU1084696A1 - Phase shift meter of non-reciprocal uhf device - Google Patents

Description

The invention relates to a technique of radio measurements, and can be used in the development of ferrite products. A phase displacement meter for non-defective devices is known, comprising a microwave oscillator, an attenuator, a measuring line with an indicator, a waveguide section with a ferrite under study, a short circuit and a matched load, in which there is a non-reciprocal phase shift of the microwave oscillation The gadfly with farrit is measured using a probe of the measuring line by determining the displacement of the position of the minimum of the standing wave when turning the ferrite with respect to the direction of propagation of microwave energy in the waveguide by 180 (or vice versa, the direction of propagation of microwave energy changes by 180, and the wave section with ferrite is set behind the measuring line and short-circuited with the short circuit, when measuring non-reciprocal energy loss of the microwave waveguide section with ferrite before the measuring line, and the end of the waveguide of the measuring line is coupled with a matching load, while the amount of non-reciprocal loss of microwave energy in the ferrite is determined by comparing d These are the readings of the microwave power, which are taken with the help of the measuring line when the waveguide section with ferrite is changed relative to the direction of the microwave energy propagation.

The disadvantage of such a device is the need to reverse the direction of microwave energy propagation in the waveguide, which makes it difficult to automate the measurement process, especially when measuring the characteristics of ferrite products operating with a variable pitch in a field,

; -1 the closest to the present invention is a non-reciprocal microwave device phase shift meter containing a series-connected oscillator, attenuator, the first probe connected to the indicator through the detector, as well as a microwave bridge unit with a matched load 2.

However, the known meter does not provide high accuracy of measurements due to the large number of indirect measurements and does not allow to measure direct and return losses without re-docking of the studied non-reciprocal microwave device.

The purpose of the invention is to improve the measurement accuracy, as well as the measurement of direct and return losses without remapping the studied non-reciprocal microwave device.

To achieve this goal, in the phase meter: about a shift of a nonreciprocal microwave device containing a generator connected in series, an attenuator, the first probe connected through the detector to the indicator, and the microwave bridge matched load, the microwave bridge unit is designed as two waveguide-slotted bridges and the second probe is introduced, the input arm of the first waveguide-slot bridge is connected to the attenuator output, the second input arm is loaded on a matched load, and in the output arms at the same distance from the slit The first and second probes are placed in the ports, the first input shoulder of the second waveguide-slotted bridge is connected to the first output shoulder of the first waveguide-slotted bridge, and in its output arms the inserted short circuits are installed with the possibility of synchronous movement, the second output shoulder of the first waveguide-slotted bridge and the second input arm of the second waveguide bridge are respectively an input and an output for connecting a non-reciprocating microwave device under study.

The drawing shows a structural electrical circuit for measuring the phase shift meter of a non-reciprocal microwave device.

The phase shift meter of a nonreciprocal microwave device contains a series-connected generator 1, an attenuator-tor 2, a first probe 3 connected via detector 4 to the indicator 5, and also a microwave power unit 6 with a matched load, and the microwave power unit 6 is made in the form of two waveguide-slit bridges 7 and 8 and the second probe 9 is introduced, the input arm of the first waveguide-spraying bridge 7 is connected to the output of the attenuator 2, the second, the input shoulder is loaded on a matched load, and in the output shoulders at the same m distance from slot 10 connection size The first and second probes 3 and 9, respectively, the first input shoulder of the second wavelength bridge 8 are connected to the first output shoulder of the first wave-split bridge 7, and in its output arms are installed short-circuit connectors 11 and 12, the second output shoulder of the first waveguide slot bridge 7 and the second input arm of the second waveguide slot bridge 8 are respectively the input and output for connecting the investigated non-reciprocating microwave device 13, as well as the micrometer screw 14.

Claims (1)

(541 (5.7) PHASE SHIFT METER FOR THE INDEPENDENT MICROWAVE DEVICE, comprising a series-connected generator, attenuator, a first probe connected through a detector to the indicator, and also a microwave bridge unit with a matched load, distinguishing between that, in order to increase the accuracy of measurements, as well as measure forward and reverse losses without reconfiguring the non-reciprocal microwave device under study, the microwave bridge unit is made in the form of two waveguide-slot bridges and the “second probe, the input arm of the first waveguide slot bridge it is connected to the attenuator, the second input arm is loaded on a matched load, and the first and second probes are respectively located in the output arms at the same distance from the communication slit, the first input arm of the second waveguide-slot bridge is connected to the first output shoulder of the first waveguide-slot bridge, and in its output arms are installed § with the possibility of synchronous movement introduced short circuits, the second output arm of the first waveguide-alkaline bridge and the second input shoulder of the second waveguide-slot bridges are respectively the input and output for connecting the investigated non-reciprocal microwave devices.