JPS5985105A - Resonator for oscillating circuit and oscillating circuit using it - Google Patents

Abstract

PURPOSE:To stabilize the oscillation without decreasing the Q by providing a through-hole in parallel to a block casing of a dielectric and forming a parallel resonator where conductors are adhered to an inner face of each through-hole and an outer face of the casing and they are coupled mutually. CONSTITUTION:The resonator 10 has a block casing 11 of a titanium oxide type ceramic dielectric. Two parallel through-holes 12, 13 are provided to the casing 11, and the inner conductors 15, 16 are adhered to the inner wall of the through-holes. The outer conductor 14 is adhered similarly to the outer wall of the casing. Two unit resonators 17, 18 are formed to the resonator 10 by the conductors. In changing the resonance frequency of one unit resonator, the frequency of the other resonator is changed and the resonance frequency contributing to the oscillation in the split resonance is changed. Thus, the oscillation having high stability is attained without decreasing the Q of the resonator.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a resonator for an L oscillation circuit and an excavation circuit using the same, and particularly to a resonator suitable for high frequency loading and an oscillation circuit using the same.

Conventionally, there is an oscillation circuit shown in FIG.

This oscillation circuit connects a resonance circuit 2 to an oscillation circuit main body 1,
In addition, this resonant circuit 2V variable capacitance diode D
is connected, and by changing the bias voltage B2 to this diode D, the oscillation frequency can be changed. By the way, in this case, a dielectric coaxial resonator is applied to the resonant circuit 2 when the oscillation frequency is high.

This inducer coaxial resonator has an inner and outer conductor coated on the inside and outside of a dielectric material such as ceramic, which is shaped like a ceramic material. When the frequency becomes higher than 500 MHz, the Q of the diode D decreases, and therefore the Q of the resonant circuit 2 also becomes low. Therefore, when widening the oscillation frequency variable range of the oscillation circuit, especially the resonance circuit 2 and the variable capacitance co-diode 1
Since the coupling between the
do.

The present invention is based on main system 4. The resonant frequency of the auxiliary resonator is changed by connecting the destroyer and the sub-system 1 radiator in parallel, and the variable range of the oscillation frequency is widened without lowering the Q. An object of the present invention is to provide a resonator for a 7-inch oscillator circuit and an oscillation circuit using the same, so that a stable IC-type and a high oscillation frequency can be obtained even when the IC is used.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.

As shown in FIGS. 2 and 3, the resonator 10 includes a hook-shaped casing 11 made of a ceramic dielectric material such as titanium oxide. This casing 11
Two parallel through holes 12 and 13 are provided in the holder. The outer periphery of this casing 11 and each through hole 1
2. The inner wall of 13 is coated with silver, by electroless M process or baking.
Coated with a conductor such as copper. In this way, the outer conductor 14 is formed on the outer periphery of the casing 11, and the inner conductors 15 and 16 are formed in each of the through holes 12 and 13, respectively. These conductors 14, 15, 16 constitute two unit resonators 17, 18 in this resonator 10, one of which is a main resonator 17 and the other a sub-resonator 18. , the width of the coupons 12 and 13 of the cable 11 is determined by the wavelength of the resonant frequency. If the length of the wave crest is 1, , /2, then the length of the outer conductor 14 is the same as the length of the inner conductors 15 and 16, and both are insulated. However, in the case of good wavelengths, both are connected at one end and electrically short-circuited to each other.The figure shows the case of four wavelengths.

If necessary, a through hole may be provided between the Machii shakers 17 and 18 to adjust the degree of coupling. At this time, no Ir, !electrode is provided in one through hole (α1).

FIG. 4 shows an example in which the writing tool 10 is applied to the oscillator circuit shown in FIG. 1. Main resonator 17
is connected to the =I collector of the transistor 3 of the oscillation circuit main body 1. 3. The variable capacitance diode D K &, -1, Vino's City, II - mark, 1/11 circuit 4 is connected.

Combine two resonant circuits ΣNI/, and 17:l'Lzoit
A resonance frequency with two different resonance frequencies is generated. However, it is not possible for two resonances to occur at the same time; if we consider each moment, only one resonance is occurring. Furthermore, resonance does not occur regularly and alternately over time. In this specification, this phenomenon will be referred to as split resonance. This spritz]
・When resonance is occurring, changing the resonant frequency on the -/ side will also change the resonant frequency on the other side. As the resonant frequencies of the respective resonant circuits are made to match, the split common frequency difference becomes wider, and in the opposite case (indicates the opposite direction).

In this case, if the resonant frequency of the sub-resonator 18 is split to the extent that it deviates from the oscillation condition, or if the Q of the sub-resonator 18 is reduced to the extent that it deviates from the oscillation condition, only one of the split resonant frequencies oscillates, sub-resonator 18
By changing the resonant frequency of the oscillation frequency, the oscillation frequency can also be changed. In this case, by applying a bias voltage to the variable waste meter dies A to D, the resonant frequency of the sub-resonator 18 draws a slope in the direction of the curve shown in FIG. The change in the sprint resonant frequency is as shown in curve M when the resonant frequency of the sub-resonator 18 is changed linearly (
Then, draw a downward slope. Therefore, the change in the oscillation frequency due to the application of the bias voltage to the variable capacitance diode D is a combination of the above curved lines and M, and is approximately a straight line N.
The slope of the sky roars. In this way, the oscillation frequency changes by approximately 1° in proportion to the bias voltage. From this, it becomes possible to tune the oscillation frequency of the oscillation circuit 10 easily and reliably.

FIG. 6 shows another embodiment of the resonator.

This resonator 20 is made of titanium oxide ceramic m''A1
, the cross section of the convex cross section protruding from the body /Pufferfish 2 is (+i
i+eru. The width of the casing with 21 minutes is 2
1a and the narrow part 21b are 11 wide x 1
'L'-i through hole 22123 is provided in. 1/-1 is applied to the outer surface of the casing 21 and the inner surface of each through hole 22,23. In this way, the -force -)-resonance BH24 is set, and the other side is set as the sub-resonator 25.
Ka + 11 Il Sei 7 ＼ru. And then, this one and two pieces
[Yes] ゛ 7 Ei, which is cut off 1111.1, and :i 25
a, Rito and (-2). In addition, its use J7
Since this is the same as the embodiments of -p) te・:] ■, -: Ding and Xiao, the explanation will be omitted.

As follows:
---) By changing the resonant frequency of the resonator j, it is possible to change the resonant frequency that contributes to oscillation in the split common iG, so the stability is often improved by lowering the Q of the resonator. Oscillation frequencies can be obtained over a wide range. If you connect a variable capacitance diode to one of the resonators, you can change the oscillation frequency almost linearly according to the change in bias voltage of the diode, so you can fine-tune the excavation frequency. Or it becomes very easy.

Furthermore, since the double-reflecting single-lens resonator is an integral structure, the small resonator can be tilted 1', so the installation area is small, and the temperature visibility is the same, making the design easy. Benefit from the following advantages.

[Brief explanation of the drawing]

Figure 1 is an electrical circuit diagram of a conventional excavation circuit, Figures 2 to 5
The figures show examples of Akira Motoba's work.
- Cross-sectional view as seen in X-rays, Figure 4 is a circuit diagram showing how to use the resonator of the present invention, Figure 8115 is a frequency characteristic:
L diagram, FIG. 6 (d is a perspective view of a resonator according to another embodiment of the present invention. 10.20. Resonator, 11.21. Case, 1.
2.13, 22.23... 4 holes, 17.24 - Main resonator, 18.25 - Sub-system resonator. Patent issue] Mr. Honto, representative of Shakuta Seisakusho Co., Ltd., Mr. Ben Misaki, Oka 1) Arn Dove Figure 1/7 Figure 31 Figure 4

Claims (2)

[Claims] (1) Take care of the block-shaped casing that comes out of the dielectric,
At least two through holes are provided in parallel in this casing, and a conductor is coated on the inner surface m1 of each through hole and on the outer surface Q of the casing (connected to each other by forming at least two unit resonators in parallel at ~). Resonator for oscillation circuit. (2) 4 keizongs between blocks made of 5 baitfish
+fii, this casing is provided with at least two electrically conductive holes in parallel; An oscillation circuit in which one unit resonator of a mutually coupled resonator is connected to the main body of the oscillator 41+41j=l, and the other unit resonator is connected to +j]variable static electricity?