JPS6341244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a triplate line type circulator having a resonant junction structure, which is highly reliable electrically and mechanically.

FIGS. 1a and 1b are plan views showing a conventional triplate line type circulator, and FIGS.
It is a sectional view in the direction of arrow A'. In these figures,
1 is an internal conductor consisting of a tri-plate line, 2a and 2b are magnetic bodies that sandwich and fix this internal conductor 1 from above and below, and 3a and 3b are grounds that sandwich and fix these magnetic bodies 2a and 2b from above and below. Conductors 4a, 4b and 4c are screws 5a and 5b that fix these ground conductors 3a and 3b.
are magnets fixed to the ground conductors 3a and 3b, respectively.

Next, the assembly operation of the triplate line type circulator having the above configuration will be explained. First, the magnetic body 2a is placed on the ground conductor 3a to which the magnet 5a is fixed. Then, the internal conductor 1 is placed on this magnetic body 2a. Then, a magnetic body 2b is placed on this internal conductor 1. Then, after placing the ground conductor 3b to which the magnet 5b is fixed on the magnetic body 2b, the pair of ground conductors 3a and 3b are tightened and fixed with screws 4a, 4b and 4c. The internal conductor 1 and the pair of magnetic bodies 2a and 2b can be fixed in any desired positional relationship between the inner conductor 1 and the pair of magnetic bodies 2a and 2b.

However, in the conventional triplate line type circulator configured as described above, the screw 4
If the tightening of a to 4c is too strong, the ground conductors 3a and 3b will bend, and the points e and 4c of the magnetic bodies 2a and 2b will
The large force of the above deflection is added to f and g,
The magnetic bodies 2a and 2b also bend. This magnetic body 2a
If the deflection generated in 2b exceeds its limit, the magnetic bodies 2a and 2b will break. Conversely, if the screws 4a to 4c are too weakly tightened, they will be susceptible to mechanical vibration. For this reason, conventional triplate line type circulators have had the disadvantage of significantly lower productivity.

Therefore, an object of the present invention is to provide a tri-plate line type circulator having a resonant junction structure by forming the shape of a pair of magnetic bodies to be slightly larger than the shape of the inner conductor at the portion where the magnetic bodies contact the inner conductor. To provide a triplate line type circulator which can minimize the influence of deflection of a ground conductor, has high productivity, and is electrically and mechanically reliable.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIGS. 2a and 2b are a plan view and a sectional view taken along the line B-B', showing a triplate line type circulator according to an embodiment of the present invention. In the figure, the same reference numerals as in Figure 1 indicate the same parts, and 6 and 7 are magnetic bodies formed almost in a Y-shape, and the magnetic bodies 6 and 7 divide a circle into three equal sector shapes of 120 degrees each. In this case, the outer peripheral edge of each fan shape is cut to form a concave arc shape from the center of the fan shape to form a concave arc-shaped peripheral edge part 6.
a, 7a are formed. Arc-shaped peripheral edges 6a and 7 formed at each of these three locations
The three outer circumferential ends 6b, 7b narrowed in the direction a and their center portions 6c, 7c are slightly larger than the shape of the inner conductor 1 at the portion where these are in contact with the inner conductor 1.

Next, the effects of this embodiment will be explained.

When the ground conductors 3a and 3b are tightened with the screws 4a to 4c, the ground conductors 3a and 3b bend. The force of this deflection is transmitted to the magnetic bodies 6 and 7, but in the triplate line type circulator according to this embodiment, the processed parts 6a and 7a are located at the portions that are most affected by the deflection of the magnetic bodies 6 and 7. Since these parts are provided, there is almost no influence from the deflection of this part, and even if the screws 4a to 4c are tightened somewhat strongly, the magnetic bodies 6 and 7 will not break.

In the above embodiment, the shape of the processed portion provided on the pair of magnetic bodies 6 and 7 is limited to an arcuate shape, but the shape of the processed portion is not limited to this.

As described above, according to the present invention, in a triplate line type circulator having a resonant junction structure, the magnetic body is shaped so as to be unaffected by the deflection of the ground conductor as much as possible. This has the effect of providing a tri-plate line type circulator that is both physically and mechanically reliable.

[Brief explanation of the drawing]

Figures 1a and 1b are plan views showing a conventional triplate line type circulator and its A-
A sectional view taken along the line A', and FIGS. 2a and 2b are a plan view and a sectional view taken along the line B-B' showing an embodiment of the triplate line type circulator according to the present invention. 1...Inner conductor, 3a, 3b...Ground conductor, 4
a, 4b, 4c...Screw, 5a, 5b...Magnet,
6,7...Magnetic material. Note that the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] 1. An internal conductor consisting of a triplate line, a pair of magnetic bodies whose portions in contact with the internal conductor are formed to be somewhat larger than the shape of the portion of the internal conductor, and which are arranged to sandwich the internal conductor, and the above-mentioned materials including the internal conductor. A tri-plate line type circulator having a resonant joint structure characterized by comprising a pair of ground conductors narrowly fixing a pair of magnetic bodies, and a magnet fixed to each of the pair of ground conductors.