JPH07142911A - Dielectric resonator fixing stand - Google Patents

Abstract

PURPOSE:To stabilize an oscillation frequency by inserting a dielectric resonator main body between vertical terminals at both ends and fitting the longitudinal direction of the main body and the longitudinal direction of a dielectric resonator fixing stand so that they are almost orthogonal. CONSTITUTION:In the form of the dielectric resonator fixing stand 3, a bottom surface part and one side of the longitudinal direction are bent in a vertical direction and it is set to form a vertical terminal 13. The tip of the other end is divided into three. The pieces of both sides are bent in the vertical directions and the are set to form vertical terminals 11 and 12. A central piece is set to form a horizontal projection part 4 in a horizontal state as it is. The dielectric resonator main body 1 is inserted between the vertical terminals 11-13. The tips of the vertical terminals 11-13 and the main body 1 are soldered. The horizontal projection part 4 and a substrate ground soldering part 9 are soldered. The longitudinal direction of the main body and the longitudinal direction of the dielectric resonator fixing stand 3 are fitted by making them cross by 90 deg.. Thus, the inductance component value of the horizontal projection is reduced and a potential difference between the ground of the dielectric resonance main body 1 and the ground of a ground substrate 8 is eliminated. Then, the oscillation frequency can be stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dielectric resonator fixed pedestal used in a resonance circuit such as an oscillation circuit of a television tuner, a CATV converter or the like.

[0002]

2. Description of the Related Art Recently, a dielectric resonator fixed pedestal has been used in a resonance circuit section of a high frequency oscillation circuit. The conventional dielectric resonator fixed pedestal (hereinafter referred to as the pedestal) will be described below. 6 to 9 show the structure of a conventional pedestal. 6 is a front view, FIG. 7 is a side view, FIG. 8 is a top view, and FIG.
Shows a pedestal body mounting diagram, 21 is a dielectric resonator body, 22 is a dielectric resonator signal terminal, 23 is a case, 24
Is a dielectric resonator ground terminal, 25 and 26 are solders, 27 is an electrode, 28 is a glass epoxy substrate, 29 is a ground pattern,
Reference numeral 30 is a land pattern for signal terminals. The dielectric resonator main body 21 and the case 23 are connected with solder 25, the dielectric resonator signal terminal 22 is connected with the electrode 27 of the dielectric resonator 21 with solder 26, and the dielectric resonator main body 21 is glass epoxy. The signal terminal land pattern 30 on the substrate 28 is connected to the dielectric resonator signal terminal 22, and the ground pattern 29 on the glass epoxy substrate 28 is used to connect the dielectric resonator ground terminal 24.
Connected with.

[0003]

However, in the above structure, in the resonance part of the oscillation circuit, the oscillation frequency becomes unstable due to the inductance component of the dielectric resonator ground terminal 24 and the glass epoxy caused by the vibration. There is a problem that the oscillation frequency becomes unstable due to the capacitance change between the ground of the substrate 28 and the dielectric resonator ground.

An object of the present invention is to provide a dielectric resonator which can easily solve the above problems.

[0005]

In order to achieve this object, the dielectric resonator fixing pedestal, which is the first invention of the present invention, comprises:
Fold the bottom part and one side in the longitudinal direction vertically to make a vertical terminal, divide the tip part on the opposite side into three parts, fold the pieces on both sides vertically to make a vertical terminal, and set the center piece horizontally. With the projection as it is, scissors the dielectric resonator main body between the vertical terminals at both ends, solder the vertical terminal tip and the main body, solder the horizontal projection and the board grounding soldering portion, The longitudinal direction of the main body and the longitudinal direction of the dielectric resonator fixing pedestal are mounted substantially orthogonal to each other.

The dielectric resonator fixing pedestal according to the second aspect of the present invention divides the bottom surface portion and the tip portions on both sides in the longitudinal direction into three parts, and the pieces on both sides are bent in the vertical direction to form a vertical terminal. The center piece is a protrusion that remains horizontal, the main body of the dielectric resonator is scissors between the vertical terminals on both ends, the vertical terminal tip and the main body are soldered, and the horizontal protrusion and the board ground solder It is configured to be soldered to a mounting portion and mounted so that the longitudinal direction of the main body and the longitudinal direction of the dielectric resonator fixing pedestal are substantially orthogonal to each other.

[0007]

With the structure of the first invention, the inductance component of the dielectric resonator ground terminal can be stably and reduced, and the oscillation frequency due to the capacitance change between the dielectric resonator ground and the substrate ground can be reduced. It can be stabilized and improved.

Further, according to the structure of the second invention, the variation of the value of the inductance component of the dielectric resonator ground terminal is eliminated, and the initial frequency deviation of the oscillation frequency is eliminated.

[0009]

(Embodiment 1) An embodiment of the first invention will be described below with reference to the drawings.

1 to 4 show the structure of the dielectric resonator fixed pedestal. FIG. 1 is a front view of the dielectric resonator fixed pedestal, FIG. 2 is a side view of the pedestal, FIG. 3 is a bottom view of the pedestal, and FIG. 4 is a dielectric resonator main body mounting diagram, where 1 is a dielectric Resonator body, 2 is a dielectric resonator signal terminal, 3 is a dielectric resonator fixing base, 4 is a horizontal protrusion, 5 and 6 are solder,
Reference numeral 7 is an electrode, 8 is a board, 9 is a board ground soldering portion, 10 is a signal terminal land pattern, and 11.12.13 are vertical terminal portions. 14 is a dowel.

In the shape of the dielectric resonator fixing base 3 for mounting and fixing the dielectric resonator body 1 on the substrate 8,
The bottom portion and one side in the longitudinal direction thereof are vertically folded to form a vertical terminal 13, the tip portion of the other end is divided into three, and the pieces on both sides thereof are vertically folded to form vertical terminals 11 and 12. The piece is a horizontal projection 4 which remains horizontal, the dielectric resonator body 1 is scissored between the vertical terminals 11, 12 and 13, and the tips of the vertical terminals 11, 12, and 13 are soldered to the body 1. The horizontal projection 4 and the board grounding soldering portion 9 are soldered to each other so that the longitudinal direction of the main body and the longitudinal direction of the dielectric resonator fixing pedestal 3 are crossed by 90 ° and attached.

As a result, the value of the inductance component of the horizontal protrusion 4 serving as the dielectric resonator ground terminal can be reduced, and the potential difference between the ground of the dielectric resonator body 1 and the ground of the substrate 8 can be eliminated. Even if there is a space between the dielectric resonator fixing pedestal 3 and the substrate 8, the space frequency does not affect the oscillation frequency and can be stabilized.

(Embodiment 2) The structure of the second dielectric resonator fixing base of the present invention is shown in FIG. 5 as a bottom view. In the shape of the dielectric resonator fixing pedestal 3, the bottom face and the tips on both sides in the longitudinal direction are each divided into three parts, and the pieces at both ends are folded vertically to the bottom face to form vertical terminals. The central piece of is formed as the horizontal protrusion 4 in the horizontal state. Since the two horizontal protrusions 4 are present as the ground terminal of the dielectric resonator, the inductance component value of the dielectric resonator ground terminal becomes small and does not vary, and the initial frequency shift of the oscillation frequency is eliminated.

[0014]

As described above, according to the dielectric resonator fixing pedestal of the first aspect of the present invention, the distance from the ground portion of the dielectric resonator body to the board ground soldering portion for connecting the board to the ground. By making the value very short, there is no potential difference between the ground of the dielectric resonator body and the ground of the substrate, so even if there is a space between the dielectric resonator fixed base and the substrate, the oscillation frequency will be the space capacitance. The influence is eliminated, and the oscillation frequency can be stabilized.

Further, according to the second aspect of the present invention, the protrusions serving as the dielectric resonator ground terminals are arranged at the two shortest distances from the ground of the resonator body, and the length of the protrusions to the substrate ground. By shortening, it is possible to equivalently reduce the stray inductance component of the dielectric resonator, and it is possible to eliminate the initial frequency shift of the oscillation frequency.

[Brief description of drawings]

FIG. 1 is a front view of a dielectric resonator fixed pedestal in an embodiment of a first invention of the present invention.

[Figure 2] Side view of the pedestal

[Figure 3] Bottom view of the pedestal

FIG. 4 is a top view when the dielectric resonator of the first invention of the present invention is mounted.

FIG. 5 is a bottom view showing the structure of the dielectric resonator fixing base of the second invention of the present invention.

FIG. 6 is a front view of a conventional dielectric resonator fixing base.

FIG. 7: Side view of the pedestal

FIG. 8 is a bottom view of the base.

FIG. 9 is a top view of a conventional dielectric resonator mounted on a substrate.

[Explanation of symbols]

 1 Dielectric Resonator Main Body 2 Dielectric Resonator Signal Terminal 3 Dielectric Resonator Fixed Pedestal 4 Horizontal Protrusions 5, 6 Solder 7 Electrode 8 Printed Circuit Board 9 Board Ground Soldering Section 10 Signal Terminal Land Pattern 11, 12, 13 Vertical Terminals 14 Dowel 21 Dielectric Resonator Main Body 22, 24 Dielectric Resonator Signal Terminal 23 Case 28 Glass Epoxy Substrate 29 Ground Pattern 30 Signal Terminal Land Pattern

Claims (2)

[Claims] 1. A dielectric resonator fixing pedestal for mounting and fixing a dielectric resonator, wherein a bottom portion and a tip portion on one side in the longitudinal direction are vertically folded to form a vertical terminal,
The tip on the opposite side is divided into three parts, and the pieces on both sides are bent vertically to form vertical terminals, and the center piece is a horizontal protrusion that remains horizontal, and a dielectric resonator is provided between the vertical terminals on both ends. A dielectric resonator fixed pedestal, characterized in that the longitudinal direction of the main body and the longitudinal direction of the dielectric resonator fixed pedestal are mounted substantially orthogonal to each other. 2. A dielectric resonator fixing pedestal for mounting and fixing a dielectric resonator, wherein a bottom surface portion and tip portions on both sides in a longitudinal direction thereof are divided into three, and pieces on both sides thereof are bent in a vertical direction. A vertical terminal, a central piece of which is a horizontal protrusion that remains horizontal, and the longitudinal direction of the dielectric resonator main body and the longitudinal direction of the dielectric resonator fixed pedestal are substantially orthogonal to each other between the vertical terminals at the both ends. A pedestal for fixing a dielectric resonator characterized by being mounted.