JPS6248104A - Resonator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a resonator using a dielectric material, and in particular to a static resonator v15! for a bandpass filter in a micro-band. ++Input- [Background of the Invention] A resonator using a conventional microstrip.

As described in Japanese Patent Application Laid-Open No. 59-107603, it was a resonator in which conductors were arranged on two opposing surfaces of a rectangular parallelepiped dielectric and one conductor was grounded to form a microstrip line.

This resonator is a block of only microstrip lines, and no consideration has been given to the connection between this resonator and the circuit board on which it is mounted, which is stupid.
There is no discussion of forming multiple resonators in a blocked resonator.

[Purpose of the invention]

The purpose of the present invention is to solve the problems of the conventional resonator consisting of a block microstrip line.

The object of the present invention is to provide a resonator that takes into account connections and multifunctionality.

[Summary of the invention]

We considered incorporating multiple resonators made of microstrip lines and a capacitor that maintains electrostatic connection with these resonators in the same block on a dielectric substrate.

[Embodiments of the invention]

Hereinafter, an embodiment of the present invention will be explained with reference to FIG. 1. FIG. 1 is a diagram showing a resonator using a dielectric material, and fal is the first
A) is a plan view showing the conductor structure of the plane, A) is its side view, (C
) is a plan view showing the conductor configuration of the second surface facing the first surface.

In the same figure, 1 is a rectangular parallelepiped dielectric, 2.3.4.5,
6 is a conductor.

The two conductors 2 and 5 arranged at a constant interval on the first surface of the dielectric 1 and the conductors 4, 5 and 6 arranged on the back surface are formed using thin film technology, thick film technology, or plating technology on the dielectric material. It is formed in close contact by such methods.

By using the conductor 4 formed on the second surface shown as a ground conductor), the conductor of the part facing the conductor 4 of the parallel conductor 2.3 arranged on the first surface is a microstrip line. Configure. A capacitor having capacitance is formed between the conductors 5 and 6 formed with a gap from the conductor 4 and the opposing conductor 2.3 via a dielectric material.

The conductor 2.3 placed on the first surface has a longitudinal length of 7
By selecting a conductor approximately equal to the wavelength, it will resonate at a frequency corresponding to the wavelength, and the impedance of the conductor 5 or B to the ground will become high, and at the same time, the current in the conductors 2 and 3 will be maximum at the negative length of the wavelength. The mutual induction between both groove bodies at this point is maximum, and a resonator is formed in which the conductors are mutually inductively coupled.

The magnitude of mutual inductive coupling is determined by the distance between conductors 2 and 5 and conductor 2.
, 3 and the conductor 5.6.

FIG. 2 is a diagram showing another embodiment of the present invention.

In the figures, -) is a plan view showing the configuration of the conductor on the first surface, ra) is a side view thereof, and [cl is a plan view showing the configuration of the conductor on the second surface opposite to the first surface. .

Components K that operate in the same manner as in FIG. 1 are designated by the same reference numerals, and the explanation thereof will be omitted. 7 is a dielectric material.

In this embodiment, in the implementation shown in FIG. 1, the conductor is placed at a constant interval from the periphery of the dielectric material, taking into account fluctuations in the resonant frequency due to defects in the periphery of the dielectric material or conductor. The conductor structure is the same as that of the embodiment shown in FIG. 1, and the resonator has the same function.

FIG. 6 shows an example of application of the resonator of this embodiment. This is a plan view (a+) and a side view (b) showing a configuration that uses the resonator shown in the embodiment of FIG. be.

In this figure, parts having the same functions as in FIG. 1 are given the same reference numerals. 8 is a resonator, 9 is a dielectric substrate, 10 is a signal input line, 11 is a signal output line, and 12.15 is a ground conductor. By keeping the ground conductor 4 and the ground conductor 12 and 13 of the resonator 8 at the same ground potential, the conductors 2 and 3 constitute a microstrip line, and the signal from the input line 10 is transmitted to the conductors 2 and 5. It is transmitted to the conductor 2 via the capacitor formed by the conductors 2 and 6, and further transmitted to the conductor 3 (by mutual inductive coupling between the conductors 2 and 5). A signal is output from the signal output line 11 through the capacitor.

During this period, due to the resonance characteristics of the conductor 2.5 and mutual inductive coupling, the conductors 2 and 5 exhibit narrow band pass characteristics in a frequency band corresponding to the lower wavelength, and outside the band, the gap between the conductor 2 and the line 10 and the line 11 is A capacitive trap will be formed.

〔Effect of the invention〕

According to the present invention, a resonator block has a plurality of resonators, and these resonators are arranged at positions where they are inductively coupled to each other,
Furthermore, by configuring a capacitor paired with these resonators, the dielectric material can be used effectively.

[Brief explanation of the drawing]

Fig. 1 is a plan view and a side view showing one embodiment of the present invention, Fig. 2 is a plan view and a side view showing an embodiment of the present invention;
The figures are a plan view and a side view showing another embodiment of the invention, and FIG. 6 is a plan view and a side view of a bandpass filter using the resonator of the invention.

Claims (1)

[Claims] 1) First and second rectangular conductors are arranged parallel to each other on a first surface of a rectangular parallelepiped dielectric, and a first conductor is arranged on a second surface opposite to the first surface. A third conductor is arranged opposite to a part of the conductor,
and a fourth conductor facing a part of the second conductor, further comprising a fifth conductor commonly facing a part of both the first and second conductors. resonator. 2) In the resonator according to claim 1, the first and second conductors are arranged at a certain distance inward from the end of the first surface, and the third, fourth and fifth conductors A resonator characterized in that a conductor is arranged at a certain distance inward from the end of the second surface.