JPH1013103A - Phase shifter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the phase shifter by which high-frequency power is distributed and a phase shift amount of each distributed power is easily adjusted continuously in details. SOLUTION: Inner surfaces of a boards 1, 10 are opposite to each other, lines 2, 3 and an input coupling line 4 are provided to an outer surface of the board 1, a slot 7 is formed on the board 1 except the part of a ground conductor 5 provided to an inner surface of the board 1, an output coupling line 12, lines 19, 20, 13, 14 and terminals 17, 18 are provided to an outer surface of the board 10, a window 16 is provided on the board 10 except the part of a ground conductor 15 provided on the inner surface, an outre conductor 23 of a turning drive knob 21 is fixed to the ground conductor 5 of the board 1, and an inner conductor 22 of the knob 21 is connected to the line 2. A high-frequency power fed to a coaxial plug 24 excites an exciting circuit, consisting of the line 4 and the slot 7 via the knob 21 and the lines 2, 3, the exciting circuit consisting of the line 12 and the window 16 is excited by an electromagnetic wave from the exciting circuit, the power produced in the line 12 is halved at an exciting point and outputted from the terminals 17, 18. When the board 1 is rotated, the exciting point of the line 12 is moved in the circumferential direction, so as to change each phase shift amount of the outputs from the terminals 17, 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can distribute high-frequency power and continuously and finely adjust each phase of the distributed power. The present invention relates to a phase shifter suitable as a constituent element of the tilt angle control device.

[0002]

2. Description of the Related Art In land mobile communication systems such as automobile telephones and portable telephones, the number of base stations is increased, the service area of each base station is narrowed, and the frequency of repeated use is increased. Effective use of the assigned frequency is performed. In order to narrow the service area of each base station, control is performed so that the tilt angle of the radiation beam of the array antenna at each base station is deep, and between adjacent base stations, so that a dead zone of radio waves does not occur. Mutual adjustment of the tilt angle is required.

[0003] In order to achieve the above-mentioned object, as a means for tilting a radiation beam in a state where the antenna is mechanically vertically set without tilting the antenna obliquely downward, conventionally, an element antenna is vertically mounted. A multi-stage array antenna is formed, and a feed line is connected for each element antenna, or a feed line is connected for each antenna block formed by appropriately combining a plurality of element antennas, and the topmost element antenna is connected. Alternatively, the length of the feed line connected to the antenna block is formed to be the shortest, and as the feed line connected to the lowermost element antenna or the antenna block is formed, the length is sequentially increased, and the element attenuator or the antenna is formed. When the phase distribution of the excitation power of the block is shifted from the uppermost element antenna or antenna block to the lowermost element antenna, Accordance reaches the burner or the antenna block, and formed so as to sequentially phase is delayed, and the formed antenna is used to tilt the maximum gain direction of the array antenna appropriately obliquely downward from the horizontal plane.

[0004]

In the above-mentioned conventional tilt beam antenna, it is necessary to change the length of each feed line in order to change the tilt angle, but in order to change the length of the feed line, it is necessary to change the length. Disconnect the feeder line from the connector and replace it with a feeder line of a different length, or replace the feeder line with a shorter feeder line, although this is only possible if you want to shorten the length of the feeder line. Instead, in each case, an extremely large amount of labor and time-consuming work is required, such as cutting off the feeder line removed from the connector and shortening the feeder line, and attaching it again to the connector.

[0005] When the power supply line is provided outside the station building, it is general to apply a waterproofing treatment such as wrapping a waterproof tape around the outer periphery of the power supply line and the outer periphery of the connection portion with the connector. In the replacement, a complicated operation of removing and reattaching the waterproof tape is added.
Therefore, when it is necessary to frequently adjust the tilt angle between adjacent base stations in order to prevent the occurrence of a dead zone of radio waves, it is not easy to change the length of the feed line.

Further, when changing the length of the feed line, not only the above-mentioned complicated work is required, but also it is impossible to change the length of the feed line minutely and continuously. In order to change the tilt angle without the need for complicated replacement work as described above, the lengths of the power supply lines are made equal to each other, and a number of parallel-connected semiconductor switches and the length of each semiconductor switch are set to each other. A phase shifter composed of different transmission lines is connected in series for each feed line, and the total length of the feed line and the transmission line of the phase shifter is changed by switching and opening / closing a semiconductor switch. Angle control devices are also used, but not only are semiconductor switches relatively inferior in power handling characteristics, but since semiconductor switches are essentially non-linear elements, mobile communication base stations are subject to strict requirements for non-linear distortion. It is not preferable to use the above-described phase shifter in the transmission / reception shared antenna system.

[0007]

The phase shifter of the present invention is provided with a rotating dielectric substrate and a fixed dielectric substrate facing each other with their inner surfaces facing each other. An input line provided on the outer surface of the rotating dielectric substrate and having an inner end located at the center of rotation of the rotating dielectric substrate, and connected to an outer end of the input line directly or via an impedance matching line. An input coupling line, a ground conductor provided on the inner surface, a through hole provided at the center of rotation, and a ground conductor provided on the inner surface, the input coupling line provided on the outer surface of the rotating dielectric substrate. And an input coupling slot formed by removing a ground conductor at a corresponding location.

The fixed dielectric substrate is provided on its outer surface and has a radius (R1) from a common central axis with the rotating dielectric substrate.
2) an arc-shaped output coupling line that is substantially equal to the length (L7) from the substantially midpoint of the length of the portion substantially corresponding to the radial direction of the input coupling slot of the rotating dielectric substrate to the center of rotation; An output line provided on the outer surface and connected to each end of the output coupling line directly or via an impedance matching line; a ground conductor provided on the inner surface; and a fixed dielectric substrate among the ground conductors And an output coupling window formed by removing a ground conductor at a location corresponding to the output coupling line.

Further, the phase shifter of the present invention is provided with a rotary drive knob and an input side coaxial plug. The knob is
An inner conductor inserted into the through hole of the rotating dielectric substrate and connected to the inner end of the input line, and provided substantially coaxially with the inner conductor and an insulator via an insulator, and concentric with the rotating dielectric substrate An outer conductor electrically and mechanically coupled to a ground conductor of the rotating dielectric substrate through a through hole provided in the fixed dielectric substrate.

The coaxial connector is capacitively connected to an inner conductor of a rotary drive knob, and has an inner conductor rotatably mounted around a common axis with the inner conductor of the rotary drive knob. , Which is capacitively connected to the outer conductor of the rotary drive knob and comprises an outer conductor rotatably mounted around a common axis with the outer conductor of the rotary drive knob.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a side view showing an embodiment of the first aspect of the present invention, FIG. 1B is an exploded perspective view of the oblique right front of FIG. 1A, and FIG. 1C is an oblique view of FIG. 1A. FIG. 1 is an exploded perspective view as viewed from the front left. In FIG. 1, reference numeral 1 denotes a rotating dielectric substrate (also referred to simply as a rotating substrate), 8 denotes a dielectric thin plate (also referred to simply as a thin plate), and 10 denotes a fixed dielectric substrate (also referred to simply as a fixed substrate). ) And 17 are output terminals, 23 is an outer conductor of a rotary driving knob, and 26 is an outer conductor of an input terminal.

FIGS. 2A and 2B are diagrams showing the outer and inner surfaces of the rotating dielectric substrate 1 of FIG. 1, ie, the input-side dielectric substrate having a circular outline, and FIG. 3 is a diagram showing the circular outline of FIG. 4A and 4B are diagrams showing the outer surface and inner surface of the fixed dielectric substrate 10 of FIG. 1, that is, the output-side dielectric substrate, respectively. As shown in FIG. 1B and FIG. 2A, on the outer surface of the rotating substrate 1, the inner end is located at the center of the rotating substrate 1, and the outer end extends in the radial direction and has an appropriate length. An impedance matching line 3 connected to the outer end of the line 2 and an input coupling line 4 connected to the outer end of the impedance matching line 3 are provided.

As shown in FIGS. 1C and 2B, a ground conductor 5 made of copper or the like is provided on the entire inner surface of the rotating substrate 1, and a through hole 6 is formed in the center of the rotating substrate 1. ,
The inner diameter is selected so that the tip of an inner conductor 22 of a rotary drive knob 21 to be described later is firmly or appropriately inserted, and the inner conductor 22 of the knob 21 and the inner surface of the rotating substrate 1 are fixed. The ground conductor 5 around the through hole 6 is removed in an appropriate range to prevent electrical contact with the ground conductor 5 provided in the above.

Further, of the ground conductor 5 provided on the inner surface of the rotating board 1, a ground conductor portion at a location corresponding to the input coupling line 4 provided on the outer surface of the rotating board 1 is removed, so that the input coupling slot 7 is formed. It is formed. The input coupling slot 7 provided on the inner surface of the rotating substrate 1 has a rotation element, which is a part of the input coupling slot 7. Open outer end of the input coupling line 4 provided on the outer surface of the substrate 1 (end opposite to the connection inner end connected to the outer end of the impedance matching line 3)
From the position corresponding to approximately 1/4 of the wavelength used,
The outer end and the inner end of the element slot portion in the radial direction are respectively connected to one end of the outer and inner parallel element slot portions which are substantially parallel and opposite to each other, so that the entire shape of the input coupling slot 7 is substantially lightning-shaped. It is formed to form.

The input lines 2 provided on the outer surface of the rotating substrate 1
A strip line is formed by the dielectric material of the rotating substrate 1 and the ground conductor 5 provided on the inner surface of the substrate 1, and an input coupling line 4 provided on the outer surface of the rotating substrate 1 and an input coupling slot 7 provided on the inner surface. An input-side excitation circuit is formed. However, the strip line and the input-side excitation circuit have different circuit configurations and often have different circuit impedances. It is desirable that an impedance matching line 3 is interposed between the impedance matching line 4 and the width and the line length of the impedance matching line 3 are appropriately selected to achieve impedance matching.

The plate surface of the dielectric thin plate 8 has the same structure as the plate surface facing the rotating substrate 1 and the back surface thereof, and as shown in FIG.
A through hole 9 is provided at the center, through which an external conductor of a rotary drive knob to be described later is inserted. It is desirable that the thin plate 8 be formed to have a diameter substantially equal to the diameter of the rotating substrate 1.

As shown in FIGS. 1 and 4, the fixed substrate 10 has a center which coincides with a central axis common to the rotating substrate 1,
A through hole 11 for insertion of an external conductor 23 of a rotary drive knob 21 described later is provided.
As shown in FIG. 3C and FIG. 3A, an arc-shaped output coupling line 12 centered on the center of the through hole 11 is provided, and its radius R1
2 is formed to be substantially equal to the length L7 between the substantially middle point of the radial element slot portion forming a part of the input coupling slot 7 provided on the inner surface of the rotating substrate 1 and the rotation center of the rotating substrate 1. I have.

1C and 4A, the output line 1
3 and 14 and the center of fixed substrate 10 (through hole 11).
Of the output substrate (described later) connected to the outer ends of the output lines 13 and 14, respectively. It is formed so as not to be in contact with the respective peripheral edges of the substrate 1 and the thin plate 8.

As shown in FIGS. 1B and 4B, a ground conductor 15 made of copper or the like is provided on the entire inner surface of the fixed substrate 10, and is provided on the outer surface of the inner surface of the fixed substrate 10. An output coupling window 16 is formed by removing the ground conductor at a position corresponding to the output coupling line 12. The output coupling window 16 is surrounded by two arc-shaped edges centered on the center of the through hole 11 and two edges substantially in the radial direction,
An arc-shaped center line L between the outer and inner arc-shaped edges
1 (FIG. 4B) substantially corresponds to the arc-shaped center line of the output coupling line 12 of the fixed substrate 10, and the length of the output coupling window 16 arc-shaped center line L1 is set to the length along the arc of the output coupling line 12. The width of the output coupling window 16 is set to be equal to the radially opposite element slot portion of the input coupling slot 7 of the rotating substrate 1. Is formed to be approximately equal to the length of, or to be appropriately large.

When the output terminals 17 and 18 are formed by coaxial plugs, respectively, the output terminals 13 and 14 are provided on the surface of the fixed substrate 10 corresponding to the outer ends of the output lines 13 and 14 provided on the outer surface of the fixed substrate 10. The ground conductor around the provided through-hole (insertion hole of the inner conductor of the coaxial connector) is removed in an appropriate range, and the ground conductor 15 does not contact the inner conductor of the coaxial connector. It is formed so that the connection between 15 and the external conductor of the coaxial connector is ensured.

An output coupling line 12 provided on the outer surface of the fixed substrate 10 and a ground conductor 5 on the inner surface of the rotating substrate 1 opposed to the output coupling window 16 and the dielectric thin plate 8 provided on the inner surface. An output-side excitation circuit is formed by the stripline. A strip line is formed by the output lines 13 and 14 provided on the outer surface of the fixed substrate 10, the dielectric material of the fixed substrate 10 and the ground conductor 15 provided on the inner surface. Since the strip line and the strip line forming the output-side excitation circuit have different circuit configurations and often have different circuit impedances, each end of the output coupling line 12 and the output lines 13 and 14 are different.
It is desirable that impedance matching lines 19 and 20 be interposed between the respective inner ends of the above as necessary, and that their widths and line lengths be appropriately selected to achieve impedance matching.

In FIG. 1, reference numeral 21 denotes a rotary drive knob, which electrically insulates both conductors by interposing an insulator between an inner conductor 22 and an outer conductor 23 and keeps both conductors coaxial. And are mechanically integrated together. Reference numeral 24 denotes an input terminal, which is a coaxial connector comprising an inner conductor 25 and an outer conductor 26. The internal conductor 25 and the internal conductor 22 of the knob 21
The internal conductors 25 are rotatable relative to each other around the axis, and are electrically connected to each other via a capacitor. On the other hand, the outer conductor 26 of the input terminal 24 and the outer conductor 23 of the knob 21 also have the same axis, and the outer conductor 26 is relatively rotatable around this axis, and is electrically connected to each other via the capacitance. Connected.

That is, the knob 21 and the input terminal 24 form a rotary joint. In assembling the phase shifter of the present invention, as shown in FIG. 1, the inner surface of the rotating substrate 1 and the fixed substrate 1 are sandwiched with a dielectric thin plate 8 interposed therebetween.
0 and the fixed substrate 10 and the thin plate 8
The outer conductor 23 of the knob 21 is inserted into the through-holes 11 and 9, and the tip of the inner conductor 22 of the knob 21 is
Of the input line 2 is fixed to the inner surface of the inner end of the input line 2 (the end located at the center of the rotating board 1), and the outer conductor 23 of the knob 21 is mechanically connected to the ground conductor 5. And is electrically connected.

After the rotating substrate 1, the thin plate 8, the fixed substrate 10, the knob 21, and the input terminal 24 are connected as described above, they are shielded (not shown in FIG. 1).
The input line 2 provided on the outer surface of the rotating substrate 1, the impedance matching line 3 and the input coupling line 4 provided as necessary contact the inner wall surface of the shield case facing the outer surface of the rotating substrate 1. In order to make the rotation of the rotating substrate 1 smooth, a suitable spacer is interposed. The output coupling lines 12, the output lines 13, 14 provided on the outer surface of the fixed substrate 10, and the impedance matching lines 19, 20 provided as necessary are connected to the inner wall surface of the shield case facing the outer surface of the fixed substrate 10. An appropriate spacer is interposed to prevent contact.

The spacer is made of, for example, a frame made of a solid dielectric and having an appropriate thickness. The inner structure of the shield case is formed, for example, such that the cross-sectional shape of the inner wall portion close to each peripheral edge of the rotating substrate 1 and the thin plate 8 is circular. In the case where the cross-sectional shape of the inner wall portion near the periphery of the fixed substrate 10 corresponds to the contour shape of the fixed substrate 10, it is interposed between the outer surface of the rotating substrate 1 and the inner wall surface of the shield case. The spacer is formed in a ring shape, and the spacer interposed between the outer surface of the fixed substrate 10 and the inner wall surface of the shield case is formed of a frame corresponding to the contour shape of the fixed substrate 10.

When connecting between the output terminals 17 and 18 and the output terminals provided on the shield case, when the output terminals 17 and 18 are formed by the coaxial plugs as described above, the shield terminals are connected to the shield case. The output terminals provided are also formed by coaxial connectors, and the coaxial connectors are connected by coaxial lines.
Output terminals 17 and 18 provided on the inner surface of fixed substrate 10
Are formed with coaxial connectors, the respective inner conductors and outer conductors are formed to have appropriately longer axial lengths, and these are inserted into through holes provided in the wall surface of the shield case to expose the respective ends to the outside. It may be formed as follows.

Further, in order to hold the rotating substrate 1 at a required rotational position, a conventionally known appropriate locking mechanism between the knob 21 and the wall surface of the shield case, for example, of the outer peripheral surface of the outer conductor 23 of the knob 21, A lock mechanism is provided such that a screw is cut on the peripheral surface exposed to the outside of the shield case, and a lock nut is screwed onto the screw. The high-frequency power applied to the input terminal 24 is applied to the input line 2 and the ground conductor 5 of the rotating board 1 via the inner conductor 22 and the outer conductor 23 of the knob 21, and the input line 2 and the impedance matching provided if necessary An input-side excitation circuit including an input coupling line 4 and an input coupling slot 7 is excited via the line 3.

The electromagnetic wave generated from the input-side excitation circuit is output from the ground conductor 5 of the rotating substrate 1 and the output coupling line 12 of the fixed substrate 10 which are opposed to each other through the dielectric thin plate 8 and the output coupling window 16 of the fixed substrate 10. Excite the side excitation circuit.
The high-frequency power generated in the output coupling line 12 by this excitation is distributed right and left with the excitation point as a boundary, and the output coupling line 1
2 are transmitted in opposite directions, and the power transmitted in the forward direction is
The power output from the terminal 17 via the impedance matching line 19 and the output line 13 provided as needed, and the power transmitted in the opposite direction is output from the terminal 18 via the impedance matching line 20 and the output line 14 provided as needed. I do.

If the length of the line from the excitation point to the terminal 17 is equal to the length of the line from the terminal 18 to the terminal 18, the amount of phase shift of the power from the excitation point to the terminal 17 and the The amounts of phase shift of the incoming powers are equal to each other, and the powers output from the terminals 17 and 18 have opposite phases and the same amplitude. When the rotary substrate 1 is rotated by operating the rotary drive knob 21, the excitation point of the output coupling line 12 moves in the circumferential direction according to the rotation angle, and the output terminal 1 is moved from the excitation point to the output terminal 1.
7 and the length of the line reaching the output terminal 18 are different from each other, and the phase shift of the power output from the terminal connected to the line having the shorter length from the excitation point. The amount becomes small, and the phase shift amount of the electric power output from the terminal connected to the line on the side where the length from the excitation point becomes long becomes large.

The intermediate point of the length of the element slot portion in the radial direction of the input coupling slot 7 of the rotating board 1 (the rotating board 1
From the open outer end of the input coupling line 4 of FIG.
The length L7 between the rotation center of the rotating substrate 1 and the radius R12 of the output coupling line 12 of the fixed substrate 10 increases in accordance with the increase in the length. By increasing the total length of the output circuit including the output coupling line 12, the impedance matching lines 19 and 20, and the output lines 13 and 14, which are provided as required, the range of change in the amount of phase shift can be increased. .

In order to conduct a performance test of the phase shifter of the present invention, the following prototype was produced. That is, the operating frequency is in the 800 MHz band, the input coupling line 4 of the rotating substrate 1 is formed in an arc shape centered on the rotation center of the rotating substrate 1, and the length of the arc is reduced to almost １ ／ of the operating wavelength. Choose, rotating board 1
The actual length of the lightning-shaped input coupling slot 7, ie, the length of the radial element slot portion of the input coupling slot 7, the length of the outer parallel element slot portion, and the length of the inner parallel element slot portion. Is formed to have a length substantially equal to 使用 of the working wavelength.

FIG. 5 shows the frequency characteristics of the return loss, the transmission loss, and the phase shift amount when the rotation angle of the rotating substrate 1 measured using the prototype is 0 °. The excitation point generated on the output coupling line 12 on the fixed substrate 10 by the electromagnetic wave from the input-side excitation circuit including the input coupling line 4 and the input coupling slot 7 on the rotating substrate 1
Rotation of the rotating substrate 1 is performed at a midpoint of the entire length of the output circuit including the output coupling line 12 connected between the output lines 7 and 18, the impedance matching lines 19 and 20, and the output lines 13 and 14, which are provided as necessary. Assume that the angle is 0 °.

FIG. 1B shows various characteristics when the rotating substrate 1 of the phase shifter of the present invention is rotated counterclockwise by 30 °, 60 ° and 90 ° from the rotation position of 0 ° described with reference to FIG. 6, FIG. 7 and FIG. In these figures, the return loss of A is a value at the input terminal 24. In the transmission loss and the phase shift amount of B and C, the solid line and the broken line indicate the output terminals 17 and 18 respectively.
Is the value observed at

As is clear from the return loss frequency characteristics of A, in the phase shifter of the present invention, not only the case where the rotation angle of the rotating substrate 1 is kept at 0 °, but also the cases of 30 °, 60 ° and 9 °.
The input impedance characteristic is kept stable in any case where the input impedance is rotated counterclockwise to 0 °. Also B
As is clear from the transmission loss frequency characteristics of
, The output amplitudes of the output terminals 17 and 18 are kept substantially constant regardless of the rotation angle of 0 °, 30 °, 60 ° or 90 °.

As shown in FIG. 5C, when the rotation angle of the rotating substrate 1 is 0 °, the difference between the respective phase shift amounts of the output terminals 17 and 18 is almost equal to a wide range of about 750 MHz to about 1050 MHz. It is kept at 180 °. However, as shown in FIGS. 6C to 8C, as the rotation angle of the rotating substrate 1 increases to 30 °, 60 °, and 90 °, the phase shift amount of the output terminal 17 gradually advances, and the phase shift amount of the output terminal 18 increases. It has a tendency to be progressively delayed.

FIG. 9 shows the result of observing the relationship between the rotation angle of the rotating substrate 1 of the phase shifter of the present invention and the phase shift amount of the output terminals 17 and 18 at a center frequency of 885 MHz. When the rotation angles of the rotating substrate 1 are 0 °, 30 °, 60 ° and 90 °, the phase shift amount of the output terminal 17 is almost 20 °.
°, 70 °, 118 ° and 163 °, and as the rotation angle of the substrate 1 changes from 0 ° to 90 °, the phase shift amount of the output terminal 17 advances almost linearly. on the other hand,
The amount of phase shift of the output terminal 18 is such that the rotation angle of the rotating substrate 1 is 0.
194 ° for °, 30 °, 60 ° and 90 °
(= -166 °), 145 °, 95 °, and 47 °, and the phase shift amount of the output terminal 18 is almost linearly delayed as the rotation angle of the rotating substrate 1 changes from 0 ° to 90 °. Becomes

The above shows the observation results when the rotating substrate 1 is rotated in the counterclockwise direction. The output coupling line 12 of the fixed substrate 10, the impedance matching lines 19 and 20, which are provided as necessary, and the output line 13 , 14 and the output coupling window 16 are formed symmetrically with respect to the midpoint of the total line length between the output terminals 17 and 18, so that even when the rotating substrate 1 is rotated clockwise, FIG. In addition, various characteristics having the same tendency as that shown in FIG. 9 can be provided.

FIGS. 10A and 10B are views showing the outer surface and inner surface of the rotating dielectric substrate 1 according to the fourth embodiment of the present invention, in which portions corresponding to those in FIG. Reference numeral 7-1 denotes an input coupling slot, which forms a radial element slot portion of an appropriate length substantially coinciding with the radial direction of the rotary substrate 1, and defines a substantially intermediate point of the length of the radial element slot portion. The point corresponding to a position having a length of about 1/4 of the used wavelength from the open outer end of the input coupling line 4 is the same as the embodiment shown in FIGS. 1 and 2, but the embodiment of FIG. In the above, the orientation of the outer parallel element slot portion coupled to the outer end of the radial element slot portion is the same as the orientation of the inner parallel element slot portion coupled to the inner end of the radial element slot portion. The input coupling slot 7-1 is formed so as to have a substantially inverted U-shape. The rotating substrate 1 is shown in FIG.
When the input coupling slot 7-1 is rotated by 180 ° around the rotation center axis from the state of 0, the shape of the entire input coupling slot 7-1 can be said to be substantially U-shaped.

In the embodiment shown in FIG. 10, as in the case of FIG. 1, the inner surface of the rotating substrate 1 and the inner surface of the fixed substrate 10 face each other with the dielectric thin plate 8 interposed therebetween.
The outer conductor 23 of the knob 21 is inserted into the through hole 11 provided in the thin plate 8 and the through hole 9 provided in the thin plate 8, and the tip of the inner conductor 22 of the knob 21 is provided in the center of the rotating substrate 1.
To fix the tip end surface of the inner conductor 22 of the knob 21 to the inner end of the input line 2, and
3 is fixedly connected to the ground conductor 5 of the rotating board 1, and the rotating board 1, the thin plate 8 and the fixed board 10 are housed in a shield case. This is the same in each of the embodiments shown in FIGS.

Also in the embodiment shown in FIG. 10, the input coupling line 4 provided on the outer surface of the rotating substrate 1 is formed in an arc shape centered on the rotation center of the rotating substrate 1, and the length of the arc is reduced. , Approximately one half of the wavelength used, the length of the parallel element slot outside the input coupling slot 7-1 of the rotating substrate 1, the length of the element slot in the radial direction, and the length of the inside parallel element slot. And the sum is approximately 1 /
2 and the width of the output coupling window 16 of the fixed substrate 10 is made substantially equal to the length of the element slot portion of the input coupling slot 7-1 of the rotating substrate 1 in the radial direction, or is made appropriately large. Characteristics very close to the various characteristics shown in FIGS. 5 to 9 can be provided.

FIGS. 11A and 11B show the outer and inner surfaces of the rotating dielectric substrate 1 according to the fifth embodiment of the present invention, using the same reference numerals. Reference numeral 7-2 denotes an input coupling slot, and a substantially middle point of the length of the element slot portion in the radial direction which forms a part thereof is substantially 1 of the used wavelength from the open outer end of the input coupling line 4-3 of the rotating substrate 1. / 4 in length, and at the outer and inner ends of the radial element slot portion, the middle point in the longitudinal direction of each of the outer and inner parallel element slot portions is approximately T. The input coupling slot 7
-2 is formed so as to have a substantially D-shape.

Also in the embodiment of FIG. 11, the length of the input coupling slot 7-2, that is, from one open outer end of the outer parallel element slot portion (eg, the open outer end on the left side in FIG. 11B). A length from the radial element slot portion to the other open outer end of the inner parallel element slot portion (e.g., the right open outer end in FIG. 11B);
And one open outer end of the inner parallel element slot portion (e.g., the left open outer end with respect to FIG. 11B) through the radial element slot portion and the other open outer end of the outer parallel element slot portion (e.g., 11B), and the width of the output coupling window 16 of the fixed substrate 10 is set to be equal to the input coupling slot 7-2. By selecting the length substantially equal to or appropriately larger than the length of the element slot portion in the radial direction, characteristics very close to the various characteristics shown in FIGS. 5 to 9 can be provided.

FIGS. 13A and 13B show the outer and inner surfaces of the rotating dielectric substrate 1 according to the sixth embodiment of the present invention using the same reference numerals as before. Reference numeral 7-3 denotes an input coupling slot, the longitudinal direction of which substantially coincides with the radial direction of the rotating substrate 1, and the midpoint of the length is approximately の 長 of the used wavelength from the open outer end of the input coupling line 4. Position corresponding to

Also in the embodiment shown in FIG. 12, the length of the input coupling slot 7-3 is formed to be approximately 1/2 of the wavelength used, and the width of the output coupling window 16 provided on the inner surface of the fixed substrate 10 is reduced. By forming the length approximately equal to the length of the input coupling slot 7-3, it is possible to provide characteristics very close to the various characteristics shown in FIGS. FIG.
Reference numerals 3A and 3B denote the outer and inner surfaces of the rotating dielectric substrate 1 according to the seventh embodiment of the present invention, in which the same reference numerals are used. 4-4 is an input coupling line,
A substantially middle point in the longitudinal direction is connected to the outside of the input line 2 or the impedance matching line 3 provided as necessary so as to form a substantially T-shape.

Reference numeral 7-4 denotes an input coupling slot formed by removing a ground conductor at a position corresponding to the input coupling line 4-4.
The total length is appropriately made longer than the total length of the input coupling line 4-4, and the width thereof is formed appropriately larger than the width of the input coupling line 4-4. Also in the embodiment of FIG. 13, the high-frequency power generated in the output coupling line 12 provided on the outer surface of the fixed substrate 10 by the electromagnetic wave from the input-side excitation circuit including the input coupling line 4-4 and the input coupling slot 7-4. ,
The output is distributed to the left and right with the excitation point as a boundary, and transmitted through the output coupling line 12 in opposite directions. In this embodiment, the output phases of the terminals 17 and 18 are in phase with each other.

Also in this embodiment, the input coupling line 4-4 is formed in an arc shape with the center of rotation of the rotating substrate 1 as a center, and the length along the arc is set to approximately 1/1 / of the wavelength used.
2, the same characteristics as those of the characteristics shown in FIGS. 5 to 8 except for the phase shift characteristics shown in FIG. C can be obtained. 14A and 14B show an embodiment of the invention of claim 8. Rotating dielectric substrate 1
In the figure showing the outer surface and the inner surface of FIG.

Reference numeral 7-5 denotes an input coupling slot. The first E-shaped slot 7-5-1 and the second E-shaped slot 7-5 are as follows.
-2. The first D-shaped slot 7-5-1 is provided substantially in the radial direction of the rotating substrate 1, and its midpoint in the longitudinal direction is connected to one open outer end of the input coupling line 4-4 [for example, toward FIG. A first radial element slot portion corresponding to a location approximately one-fourth of the used wavelength from the right open outer end [eg, a radial element slot portion on the left side in FIG. 14B] And approximately T at the outer and inner ends of the first radial element slot portion, respectively.
A first outer and inner parallel element slot portion joined at approximately the midpoint in the longitudinal direction to form a letter.

The second E-shaped slot 7-5-2 is provided substantially in the radial direction of the rotating board 1, and its midpoint in the longitudinal direction is defined by the input coupling line 4-4 provided on the outer surface of the rotating board 1. From the other open outer end (for example, the open outer end on the left side of FIG. 14A), a second radial element slot portion (for example, FIG. A radial element slot portion on the right side toward 14B], and an approximately middle point in the longitudinal direction so as to form a substantially T-shape with each of the outer end and the inner end of the second radial element slot portion. Consisting of second outer and inner parallel element slot portions. In the embodiment shown in FIG. 14, the input coupling line 4-4 of the rotating substrate 1 is formed in an arc shape centered on the rotation center of the substrate 1, and the length along the arc is appropriately made larger than the wavelength used. In addition, the parallel element slot portions on the outside and inside of the first and second E-shaped slots 7-5-1 and 7-5-2 forming the input coupling slot 7-5 are centered on the rotation center of the substrate 1. The first and second E-shaped slots are formed in an arc shape, and the outer parallel element slot portion of one of the outer parallel element slot portions is passed through the radial element slot portion to the other open outer end of the inner parallel element slot portion. The length from one open outer end of the inner parallel element slot portion to the other open outer end of the outer parallel element slot portion via the radial element slot portion is approximately equal to the used wavelength. Choose 1/2 length Substantially along the circumferential direction of the substrate 1 between the midpoint length of each longitudinal element slot portion of the first and second radial,
By forming it appropriately larger than の of the wavelength used,
Among the characteristics shown in FIGS. 5 to 8, the same characteristics as those other than the phase shift characteristics shown in FIG.

FIG. 15 shows a phase shifter according to the present invention in which the rotating substrate 1 is shown in FIGS. 13 and 14, of the characteristics shown in FIGS. 5 to 8 except for the characteristics shown in FIG. Using a prototype in which various conditions were selected so that the same characteristics could be provided in the operating frequency band of 800 MHz,
It is the result of observing the relationship between the rotation angle of the rotating substrate 1 in the counterclockwise direction and the phase shift amount of the output terminals 17 and 18 at the center frequency 885 MHz of the working frequency band. As is clear from the figure, as the rotating board 1 rotates counterclockwise, the phase shift of the output terminal 17 advances almost linearly from 0 °, and the phase shift of the output terminal 18 shifts almost linearly from 0 °. Will be delayed.

FIG. 16A is a view showing the outer surface of the rotating dielectric substrate 1 according to the second embodiment of the present invention. In the present embodiment, the branch input lines 2-1 and 2-2 are branched from one end of the input line 2, and the branch input lines 2-1 and 2-
2, input coupling lines 4-1 and 4-2 are provided via impedance matching lines 3-1 and 3-2 provided as needed, and each of the input coupling lines 4-1 and 4-2 is opened. From the outer end, a location approximately 1/4 of the wavelength used,
The lengths between the input end of the input line 2 and the end of the input line 2 (the end located at the center of rotation of the substrate 1) are appropriately different from each other.

Although the inner surface of the substrate 1 is not shown, a grounding conductor is provided on the entire inner surface as in the embodiment shown in FIG. The insertion hole 6 of the internal conductor 22 is provided, and an input coupling slot is provided at a position corresponding to the input coupling lines 4-1 and 4-2. FIG. 16B is a diagram showing the outer surface of the fixed dielectric substrate 10 combined with the rotating substrate 1 of FIG. 16A, where 12-1 and 12-2 are each arc-shaped around a common central axis with the substrate 1. In the output coupling lines, the respective radii are set to the respective lengths between a location approximately 1/4 of the used wavelength from each open outer end of the input coupling lines 4-1 and 4-2 and the rotation center of the substrate 1. It is formed almost equally.

19-1, 19-2 and 20-1, 20
-2 is an impedance matching line provided as needed, 1
Reference numerals 3-1 and 13-2 and 14-1 and 14-2 denote output lines, and reference numeral 11 denotes a through hole for inserting the external conductor 23 of the rotary drive knob 21. Although not shown, the inner surface of the fixed substrate 10 is provided with a ground conductor over the entire inner surface, as in the embodiment shown in FIGS. 1 and 4, and provided on the output coupling lines 12-1 and 12-2. Output coupling windows are provided at corresponding locations, and output lines 13-1, 13-2 and 14-1, 1
Output terminals are provided at locations corresponding to the respective ends of 4-2.

In the embodiment shown in FIG. 16, the inner surface of the substrate 1 and the substrate 10 are sandwiched by a dielectric thin plate 8 similar to that of the previous embodiment.
The outer conductor 23 of the knob 21 is inserted into the through hole 11 of the substrate 10 and the through hole 9 of the thin plate 8.
The tip of the internal conductor 22 of the knob 21 is inserted into the through hole 6 provided in the center of the substrate 1, and the internal conductor 22 of the knob 21 is inserted.
Is fixed to the inner end of the input line 2 provided on the outer surface of the substrate 1 and the outer conductor 23 of the knob 21 is connected and fixed to the ground conductor provided on the inner surface of the substrate 1 as in the previous embodiment. Inside the shield case.

In the embodiment shown in FIG.
Is applied to the inner conductor 22 of the knob 21.
And is distributed to the branch input lines 2-1 and 2-2 via the external conductor 23 and the input line 2 provided on the outer surface of the substrate 1 (the branch input lines 2-1 and 2-2 via the input line 2).
Instead of being distributed to the input line 2, the input line 2 may be omitted and the input line 2 may be directly distributed to the branch input lines 2-1 and 2-2). To excite an input-side excitation circuit composed of an input coupling line 4-1 and an input coupling slot via
An input-side excitation circuit including an input coupling line 4-2 and an input coupling slot is excited via an impedance matching line 3-2 provided as necessary.

The output coupling lines 12-1 and 12-1 provided on the outer surface of the substrate 10 are generated by electromagnetic waves from the input-side excitation circuit.
The high frequency power generated in 2-2 is transmitted from each excitation point to each other in opposite directions, and output lines 13-1, 14-1 and 13-1
-2 and 14-2 are output from output terminals connected to the respective outer ends. In this embodiment, since the radii of the arc-shaped output lines 12-1 and 12-2 provided on the outer surface of the substrate 10 are different from each other, the output coupling line 12-1 and the impedance provided as necessary Matching lines 19-1 and 19-2
0-1, the total length of the output lines 13-1 and 14-1, the output coupling line 12-2, the impedance matching lines 19-2 and 20-2, and the output lines 13-2 and 14-
2 can be different from each other, and connected to the output terminals connected to the output lines 13-1 and 14-1 and the output lines 13-2 and 14-2 according to the rotation angle of the substrate 1. It is possible to freely select a combination of the magnitude of the phase shift amount and the amplitude of each output of the output terminal.

FIG. 16 shows input coupling lines 4-1 and 4-2 provided on the outer surface of the substrate 1 and input coupling slots (not shown) provided on the inner surface of the substrate 1 as shown in FIGS. In this embodiment, the same lines and slots as those of the input coupling line 4 and the input coupling slot 7 shown in FIG. 10 are used. However, even if the input coupling line and the input coupling slot shown in FIGS. The present invention can be carried out in the same manner as the embodiment shown in FIG. 16, and the conditions for forming the input coupling line and the input coupling slot are determined substantially in the same manner as those described with reference to FIGS. 9 and 15
Can have the same characteristics as those shown in FIG.

In FIG. 16, the branch input line 2-
1 and 2-2, two sets of input circuits comprising impedance matching lines 3-1 and 3-2 and input coupling lines 4-1 and 4-2 provided as necessary, and an output coupling line 12 on the substrate 10 side. -1 and 12-2, impedance matching lines 19-1, 20-1 and 1 provided as necessary
9-2, 20-2, and output lines 13-1, 14-1 and 13-2, 14-2, two sets of output circuits are illustrated. However, three sets or three or more sets of arbitrary sets are provided. The invention can be implemented with a number of input and output circuits.

That is, in the present invention, an arbitrary plurality of phase shifters can be formed using a pair of substrates. It should be noted that an arbitrary number of the phase shifters of the present invention whose main parts are shown in FIG. 1 are used, the input terminal of the next-stage phase shifter is connected to the output terminal of the first-stage phase shifter, and the number of stages is appropriately selected. As a result, it is possible to obtain an arbitrary plurality of outputs having different phase shift amounts with respect to the input.

The phase shift circuit configuration by such connection can be similarly implemented in the embodiment whose main part is shown in FIG. In the description of FIG. 1, the case where the output terminals 17 and 18 are attached to the inner surface side of the fixed substrate 10 has been exemplified. However, the output terminals 17 and 18 may be attached to the outer surface side. 1 and the peripheral edges of the dielectric thin plate 8, there is no possibility of contact with each other, so that there is a restriction on the mounting position of the output terminal, that is, the center of curvature of the output coupling line 12 provided on the outer surface of the fixed substrate 10 and the mounting position of the output terminal. The output terminal can be attached to an arbitrary position without being restricted by making the interval of the rotation substrate 1 and the thin plate 8 appropriately larger than the respective radii.

Since the knob 21 and the rotating substrate 1 cannot be repeatedly rotated in the same direction over 360 °, the line connected to the input terminal 24 attached to the knob 21 is Since there is no possibility of strong twisting, it is not always necessary to form the input terminal 24 with a coaxial connector and form a rotary joint together with the knob 21, and the coaxial connector forming the knob 21 and the input terminal 24 is coaxial. The inner end of the coaxial transmission line is replaced with a through hole 11 of the fixed substrate 10.
And the inner conductor of the coaxial transmission line is connected to the inner end of the input line 2 provided on the outer surface of the rotating board 1, and the outer conductor is connected to the inner surface of the rotating board 1. May be configured to be electrically and mechanically coupled to the grounding conductor 5 provided in the first embodiment.

In any of the above embodiments, the input line, the impedance matching line, the input coupling line, the output coupling line, the output line provided on the outer surface of the rotating substrate 1, the ground conductor provided on the inner surface of the substrate, and the like. May be formed by punching a conductor plate of these appropriate thicknesses into a required shape and affixing them to the outer surface and inner surface of the substrate, and by the same method as the printed wiring method, the outer surface of the dielectric substrate and It may be formed by providing a thin metal layer on the inner surface.

Further, when the inner surfaces of the rotating substrate 1 and the fixed substrate 10 are directly brought into close contact with each other, there is a possibility that smooth mechanical rotation of the rotating substrate 1 may be hindered or electrical noise may be generated. Between the inner surface of the rotating substrate 1 and the inner surface of the fixed substrate 10 for the purpose of preventing
However, instead of interposing an independent dielectric thin plate 8, a dielectric layer may be provided on any one of the ground conductors provided on the inner surfaces of the rotating substrate 1 and the fixed substrate 10. Good.

In the phase shifter of the present invention, since a non-linear element is not used as a constituent element, an input is applied to any one of the output terminals, an output is taken out from the input terminal, and the output is determined according to the rotation angle of the rotating dielectric substrate. Thus, it is also possible to use such a method that the output phase shifter is changed.

[0064]

According to the phase shifter of the present invention, the amount of phase shift can be adjusted continuously and finely very easily without requiring much time and labor as in the prior art. It has excellent power durability and can be used in reverse input and output.When using with high power, a thin dielectric plate should be interposed between the rotating substrate and the fixed substrate to face each other. In this way, there is no possibility of causing electrical noise, and in the 800 MHz band, it is possible to cover a band of 16.5% in the fractional band. Therefore, the tilt angle control of the array antenna for the base station of the mobile communication system is performed. The effect is extremely large when used as a component of an apparatus or the like.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the invention of claim 1, wherein A is a side view, and B and C are exploded perspective views.

2A and 2B are rotating dielectric substrates 1 of FIG. 1, respectively.
The front view and the rear view which looked at the outer surface of FIG.

FIG. 3 is a front view of the dielectric thin plate 8 of FIG. 1;

4A and 4B respectively show the fixed dielectric substrate 1 of FIG.
The front view and rear view which looked at the outer surface of No. 0.

FIG. 5 is a view showing characteristics of the embodiment of FIG. 1 at a rotation angle of 0 °.

FIG. 6 is a diagram showing characteristics of the embodiment of FIG. 1 at a rotation angle of 30 °.

FIG. 7 is a diagram showing characteristics of the embodiment of FIG. 1 at a rotation angle of 60 °.

FIG. 8 is a view showing characteristics of the embodiment of FIG. 1 at a rotation angle of 90 °.

FIG. 9 is a graph showing a relationship between a phase shift amount and a rotation angle in the embodiment of FIG. 1;

10A and 10B are a front view and a rear view of an embodiment of the rotating substrate 1 according to the fourth aspect of the present invention.

11A and 11B are a front view and a rear view of an embodiment of the rotating board 1 according to the invention of claim 5;

12A and 12B are a front view and a rear view of an embodiment of the rotating board 1 according to the invention of claim 6;

13A and 13B are a front view and a rear view of an embodiment of the rotating board 1 according to the seventh aspect of the present invention.

14A and 14B are a front view and a rear view of an embodiment of the rotating board 1 according to the invention of claim 8;

FIG. 15 is a graph showing the relationship between the amount of phase shift and the rotation angle in the embodiment of claim 7 or 8 using the rotating substrate 1 of FIGS. 13 and 14;

FIGS. 16A and 16B are front views showing an embodiment of the rotating substrate 1 and the fixed substrate 10 according to the invention of claim 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating dielectric substrate (also referred to as rotating substrate) 2 input line 3 impedance matching line 4 input coupling line 5 ground conductor 6 through hole 7 input coupling slot 8 dielectric thin plate 9 through hole 10 fixed dielectric substrate (also referred to as fixed substrate) DESCRIPTION OF SYMBOLS 11 Through-hole 12 Output coupling line 13, 14 Output line 15 Ground conductor 16 Output coupling window 17, 18 Output terminal 19, 20 Impedance matching line 21 Knob for rotation drive 22 Internal conductor of knob 23 External conductor of knob 24 Input terminal 25 Inner conductor of input terminal 26 Outer conductor of input terminal 2-1 and 2-2 Input line 3-1 and 3-2 Impedance matching line 4-1 and 4-4 Input coupling line 7-1 and 7-5 Input coupling slot 12-1, 12-2 Output coupling line 13-1, 13-2 Output line 14-1, 14-2 Output line

──────────────────────────────────────────────────続 き Continuing on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H01Q 3/36 H01Q 3/36 (72) Inventor Masaharu Karigome 1 Kanda Iwamotocho, Chiyoda-ku, Tokyo Iwamotocho Building Nippon Dengeki Kogyo Co., Ltd. (72) Inventor Toshiharu Toki 1 Kanda Iwamotocho, Chiyoda-ku, Tokyo Iwamotocho Building Nippon Dengeki Kogyo Co., Ltd. (72) Inventor Gaki Ehata Chiyoda-ku, Tokyo No. 1 Kanda Iwamotocho Iwamotocho Building Nippon Dengyo Kogyo Co., Ltd.

Claims (9)

[Claims] 1. A rotating dielectric substrate and a fixed dielectric substrate facing each other with their inner surfaces facing each other, provided on an outer surface of the rotating dielectric substrate, and an inner end positioned at a rotation center of the rotating dielectric substrate. An input line, an input coupling line connected directly or via an impedance matching line to an outer end of the input line, a ground conductor provided on an inner surface of the rotating dielectric substrate, A through hole provided at the center of rotation, and a ground conductor at a location corresponding to an input coupling line provided at an outer surface of the rotating dielectric substrate among ground conductors provided at an inner surface of the rotating dielectric substrate are removed. An input coupling slot formed on the outer surface of the fixed dielectric substrate, and a radius (R12) from a common central axis with the rotating dielectric substrate is provided on an inner surface of the rotating dielectric substrate. Was An arcuate output substantially equal to the length (L7) of the force coupling slot from a substantially middle point of a length substantially corresponding to the radial direction of the rotating dielectric substrate to a rotation center of the rotating dielectric substrate. A coupling line, an output line provided on an outer surface of the fixed dielectric substrate, and connected to each end of the output coupling line directly or via an impedance matching line; and an inner surface of the fixed dielectric substrate. A ground conductor provided; an output coupling window formed by removing a ground conductor at a location corresponding to an output coupling line provided on an outer surface of the fixed dielectric substrate, of the ground conductor; An inner conductor inserted into a through hole provided at the center of rotation of the substrate and connected to the inner end of an input line provided on the outer surface of the rotating dielectric substrate; Provided coaxially An outer conductor electrically and mechanically coupled to a ground conductor provided on the inner surface of the rotating dielectric substrate through a through hole provided in the fixed dielectric substrate concentrically with the rotating dielectric substrate; Consisting of
A rotary drive knob used for adjusting the amount of phase shift; and a capacitor that is capacitively connected to an internal conductor of the rotary drive knob and that is around a common axis with the internal conductor of the rotary drive knob. And is capacitively connected to the inner conductor rotatably attached to the rotatable driving knob and rotatably mounted around a common axis with the outer conductor of the rotatable driving knob. A phase shifter comprising: an input-side coaxial plug comprising an external conductor. 2. A rotating dielectric substrate and a fixed dielectric substrate which face each other with their inner surfaces facing each other, and are provided on the outer surface of the rotating dielectric substrate, and each inner end has a rotation center of the rotating dielectric substrate. To the outer ends of a plurality of input lines connected directly or via a common line to the outer ends of the input lines directly or via impedance matching lines. A plurality of input coupling lines having different lengths from the point to the rotation center of the rotating dielectric substrate; a ground conductor provided on the inner surface of the rotating dielectric substrate; and a rotation center of the rotating dielectric substrate. A through hole provided, and a ground conductor at a position corresponding to each of a plurality of input coupling lines provided on an outer surface of the rotating dielectric substrate among ground conductors provided on an inner surface of the rotating dielectric substrate. Is formed by removing A plurality of input coupling slots, provided on the outer surface of the fixed dielectric substrate, wherein each radius from a common central axis with the rotating dielectric substrate is provided on the outer surface of the rotating dielectric substrate. From the open outer end of each of the input coupling lines, and
A plurality of arc-shaped output coupling lines each equal in length to the rotation center of the rotating dielectric substrate, provided on the outer surface of the fixed dielectric substrate, and directly at each end of the output coupling line; Or a plurality of output lines connected via an impedance matching line; a ground conductor provided on the inner surface of the fixed dielectric substrate; and a ground conductor provided on the outer surface of the fixed dielectric substrate among the ground conductors. A plurality of output coupling windows formed by removing ground conductors at locations corresponding to each of the plurality of output coupling lines, and inserted into a through hole provided at the center of rotation of the rotating dielectric substrate; An inner conductor connected directly or through a common line to each inner end of the plurality of input lines provided on the outer surface of the rotating dielectric substrate, and provided substantially coaxially via the inner conductor and an insulator; The rotating dielectric substrate A rotary drive comprising an outer conductor electrically and mechanically coupled to a ground conductor provided on the inner surface of the rotating dielectric substrate through a through hole provided in the fixed dielectric substrate concentrically with the plate. And an inner conductor that is capacitively connected to the inner conductor of the rotary drive knob and that is rotatably mounted around a common axis with the inner conductor of the rotary drive knob. A coaxial connector on the input side, which is capacitively connected to the outer conductor of the driving knob and comprises an outer conductor rotatably mounted around a common axis with the outer conductor of the rotating driving knob; A phase shifter comprising: 3. A rotary dielectric substrate, wherein one or more input coupling slots provided on an inner surface of the rotary dielectric substrate are provided substantially in a radial direction of the rotary dielectric substrate, and a midpoint in the longitudinal direction thereof is defined by a rotary dielectric substrate. From the open outer end of the input coupling line provided on the outer surface of the substrate, a radial element slot portion corresponding to a location having a length of approximately 1/4 of the used wavelength, and an outer portion of the radial element slot portion. 3. A phase shifter as claimed in claim 1 or claim 2, comprising outer and inner parallel element slot portions respectively coupled to the end and the inner end and arranged substantially parallel and oppositely to each other. 4. Each of one or a plurality of input coupling slots provided on the inner surface of the rotating dielectric substrate is provided substantially in the radial direction of the rotating dielectric substrate, and the intermediate point in the longitudinal direction thereof is defined as a rotating dielectric substrate. From the open outer end of the input coupling line provided on the outer surface of the substrate, a radial element slot portion corresponding to a location having a length of approximately 1/4 of the used wavelength, and an outer portion of the radial element slot portion. 3. A phase shifter as claimed in claim 1 or claim 2 comprising outer and inner parallel element slot portions coupled to the end and the inner end, respectively, and being substantially parallel and oriented in the same direction. 5. A rotary dielectric substrate, wherein one or more input coupling slots provided on an inner surface of the rotary dielectric substrate are provided substantially in a radial direction of the rotary dielectric substrate, and a midpoint in a longitudinal direction thereof is defined by a rotary dielectric substrate. From the open outer end of the input coupling line provided on the outer surface of the substrate, a radial element slot portion corresponding to a location having a length of approximately 1/4 of the used wavelength, and an outer portion of the radial element slot portion. 3. A phase shifter as claimed in claim 1 or 2, wherein the phase shifter is formed in a more T-shape with outer and inner parallel element slot portions coupled to form a generally T-shape at the end and the inner end, respectively. 6. A rotary dielectric substrate, wherein one or more input coupling slots provided on an inner surface of the rotary dielectric substrate are provided substantially in a radial direction of the rotary dielectric substrate, and a midpoint in the longitudinal direction thereof is defined as a rotary dielectric substrate. 3. The phase shifter according to claim 1, wherein the phase shifter comprises a slot located at a position having a length of about 1/4 of the used wavelength from the open outer end of the input coupling line provided on the outer surface of the substrate. 7. A single or a plurality of input coupling lines provided on the outer surface of the rotating dielectric substrate, each of which has a substantially middle point in the longitudinal direction at an outer end of the input line directly or via an impedance matching line. The input coupling slot provided on the inner surface of the rotating dielectric substrate is connected to the input coupling line provided substantially parallel to the input coupling line provided on the outer surface of the rotating dielectric substrate. Claim 1 or 2 comprising
2. The phase shifter according to 1. 8. One or a plurality of input coupling lines provided on the outer surface of the rotating dielectric substrate, each having a substantially middle point in the longitudinal direction at an outer end of the input line directly or via an impedance matching line. , Each of the one or more input coupling slots provided on the inner surface of the rotating dielectric substrate comprises first and second E-shaped slots; Are provided substantially in the radial direction of the rotating dielectric substrate, and the midpoint in the longitudinal direction is substantially 1/1 / of the used wavelength from one open outer end of the input coupling line provided on the outer surface of the rotating dielectric substrate. 4, a first radial element slot portion corresponding to a location having a length of 4, and outer and inner ends of the first radial element slot portion, respectively.
A first outer and inner parallel element slot portion having a substantially midpoint in a longitudinal direction joined to form a substantially T-shape, wherein the second d-shaped slot is provided substantially in a radial direction of the rotating dielectric substrate. And a second intermediate point corresponding to a length of about ほ ぼ of the wavelength used from the other open outer end of the input coupling line provided on the outer surface of the rotating dielectric substrate. And the outer and inner ends of the second radial element slot portion, respectively.
3. A phase shifter as claimed in claim 1 or claim 2 comprising a second outer and inner parallel element slot portion joined at a substantially midpoint in the longitudinal direction to form a substantially T-shape. 9. The coaxial transmission line replaces the rotary drive knob and the coaxial plug that is capacitively connected to the inner and outer conductors of the knob, and the inner end of the coaxial transmission line is
The inner conductor of the coaxial transmission line is inserted into the through hole provided in the fixed dielectric substrate, and the inner conductor of the coaxial transmission line is connected to the inner end of the input line provided on the outer surface of the rotating dielectric substrate. Is electrically and mechanically coupled to a ground conductor provided on an inner surface of the rotating dielectric substrate.
2. The phase shifter according to 1.