RU1826091C - Phase shifter - Google Patents

Abstract

Use: to control the phase of a transmitted microwave signal. SUMMARY OF THE INVENTION: the device comprises a dielectric plate, on one side of which there is a metal base, and on the other a strip conductor with a strip open loop connected to it by means of a switching diode. A slit is made in the metal base parallel to the strip ribbon cable, one end of which is short-circuited and located opposite the open end of the strip ribbon cable, and its other end is open and located opposite the first switching diode. The second switching diode is connected by the edges of the slit at the open end. The strip loop can be made in the form of two coaxial wire segments, between the adjacent ends of which a third switching diode is connected, and a fourth switching diode is connected between the edges of the slit opposite the third switching diode. 1 s.p. f-ly, 1 ill. ate with

Description

The invention relates to microwave radio engineering, is intended to control the phase of the transmitted signal and can be used in phased microwave devices.

The purpose of the invention is to improve matching over a wide frequency range.

Figure 1 schematically shows the proposed phase shifter, top view; figure 2 is the same, bottom view.

The phase shifter comprises a dielectric plate 1, on one side of which there is a metal base 2, and on the other side a transmission line conductor 3 connecting the input and output of the phase shifter. A conductor of the transmission line 5 is connected perpendicularly to the conductor 3 at one end through the first switching diode 4, and the other end of the conductor 5 is open. In the metal base 2 under the conductor 5 and is short-circuited by the capacitor 7. The other end of the gap 6 intersects the projection of the transmission line conductor 3, is made open and is located in the immediate vicinity of the intersection of the gap 6 with the projection of the conductor 3. At the intersection of the gap 6 and the projection conductor 3 in the slot 6 included a second switching diode 8.

In order to provide an additional phase adjustment discrete while maintaining the dimensions in the conductor 5, a gap is made in which the third switching diode 9 is sequentially connected. Under the place where the diode 9 is connected, a fourth switching diode 10 is included in the slot 6.

In order to supply a control voltage to the diodes 8, 10, slots 11, 12 are made in the metal base 2, at the point of connection of which short-circuit capacitors 13, 14 are connected to the slit 6.

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Phaser is as follows.

When the control voltage is applied, the diode 8 opens and shortens the slot line 6. The microwave signal passes directly from the input to the output through conductor 3. When a control voltage is applied to diodes 4 and 9 and there is no control voltage on diodes 8.10, slot 6 breaks the path of the microwave current through conductor 3 and the microwave signal bypasses slot 6 through conductor 5 and acquires a phase shift determined by the length of the conductor 5 and the slit 61. Since the wave impedances of the associated microstrip-slot line are selected from the condition of matching the phase shifter over the entire frequency range, matching of the phase shifter is provided for any length I of the conductor 5 and slot 6.

When the control voltage is applied only to diodes 4 and 10, a smaller signal path is provided bypassing the slit 6 along conductor 5, thereby providing an additional value of the phase adjustment discrete, determined by the distance And from the connection point of conductor 5 with diode 4 to the break point made in conductor 5.

Claims (2)

1. Phaser, containing dielectric. tric plate, on one side of which 5 0 5 0 A swath is placed on a metal base, and on the other there is a strip conductor, the ends of which are input and output, respectively, and an open strip loop connected to an orthogonal strip conductor through a non-linear element, and a slot is made parallel to the strip strip in the metal base, one end of which is short-circuited and is located opposite the open end of the strip cable, and the other end is opposite the non-linear element, characterized in that, in order to improve harmonizing in a wide frequency range, the nonlinear element is a first switching diode inputted second switching diode is connected between the edges of the slit at the second end thereof, which is made open. 2. The phase shifter according to claim 1, with the fact that, in order to increase the number of phase discrete, the strip loop is made in the form of two coaxial segments of the conductor, between the adjacent ends of which the introduced third switching diode is connected and the introduced fourth switching diode is connected between the edges of the slit and is located opposite the third switching diode.