JPH011306A - Distributor - 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 Industrial Application The present invention relates to a distributor used in a high frequency band.

Conventional technology distributors are widely used in high frequency circuits such as wireless communication devices and measuring instruments. As this distributor, a configuration using a star connection described in, for example, Revised Basic Electrical Circuits I (Corona Publishing, University Course of the Institute of Electrical Communication Engineers) is known. Hereinafter, a conventional distributor will be explained with reference to FIG.

In FIG. 3, 1 is an input terminal, 2 and 3 are distribution output terminals, and 4 to 6 are resistors.

In the above configuration, the high frequency signal input from the input terminal 1 is sent to the distribution output terminal 2 via the resistors 4 to 6.
, 3.

Problems to be Solved by the Invention However, in the above configuration, input/output matching is performed using resistors 4 to 4.
6, the signal source impedance is 50
If it is Ω, then R=50/3, which is 16.7Ω, and the distribution loss is as large as 6 dB. In addition, this resistive divider does not have frequency characteristics and cannot achieve a classification degree of 6 dBL, which is commensurate with the distribution loss, so the signal source may be subject to frequency fluctuations due to the looping of other frequencies, or the frequencies may be mixed, causing sublime distortion. There were some problems that occurred.

The present invention solves the above-mentioned problems of the prior art, and aims to provide a distributor with low distribution loss and frequency characteristics.

Means for Solving the Problems In order to solve the above problems, the present invention provides a resonator (hereinafter referred to as a The above object is achieved by using a plurality of split ring resonators (referred to as split ring resonators) and coupling the input split ring resonator to the plural split ring resonators.

According to the above configuration, the present invention configures a band-pass P-wave device by combining a split ring resonator into which a high-frequency signal is manually inputted with a split ring resonator corresponding to the number of distribution, and provides a divider having frequency characteristics. It was designed to realize the following.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a distributor in a first embodiment of the invention. In Figure 1, 11 is an input terminal, 12.1
3 is a distribution output terminal, 14 to 16 are input/output coupling capacitors →
G, 17 to 19 are resonant frequency tuning capacitors 17a to 19 in the notch.
19a is a split ring resonator. The split ring resonators 17 and 18 and the split ring resonators 17 and 19 obtain the desired bandpass characteristics by spatial parallel coupling (+2, k1 for the required degree of interstage coupling).
3 has been achieved.

The operation of the above configuration will be described below.

First, the high frequency signal input from the input terminal 11 is distributed via the input/output coupling capacitors 14 and 15, the split ring resonators 17 and 18, and the bandpass r-wave filter realized by the interstage coupling degree k12 (2). It is output to the output terminal T-12. Similarly, the output to the distribution output terminal 13 is also connected to the input/output coupling capacitor 14°, the split ring resonator 17
．． The signal is output to the distribution output terminal 13 via a bandpass P-wave device realized by 19 and interstage coupling degree k13.

According to the above configuration, by utilizing the property that it can be easily coupled to other than the split ring resonator, the high frequency signal is distributed to two terminals (2.
By configuring a wave transmitter, it is possible to provide a frequency characteristic, and it is possible to significantly reduce frequency fluctuations in the signal source and generation of spurious waves due to interference of other frequencies.

Also, the distribution loss is the unloaded Q of the split ring resonator.
determined by, frequency band approximately 2%, no load Q20
If it is about 0, a distribution loss of about 2 dB can be achieved, making it possible to significantly reduce the distribution loss.

FIG. 2 is a plan view of a distributor in a second embodiment of the invention. 2 differs from the configuration in FIG. 1 in that the number of distributed outputs is three and that the floating resonator is rectangular. That is, in FIG. 2, 21 is an input terminal, 22 to 24 are distribution output terminals, and 2
5 to 28 are input/output coupling capacitors, and 29 to 32 are split ring resonators in which resonant frequency tuning capacitors': J 29 a to 32 a are provided in cutout portions. The striped rib trig resonators 29, 30, 31, 29, and 32 achieve interstage coupling degrees of 12, k13, and k+4 through spatial parallel coupling.

The operation of the above configuration (2) will be explained below.

Similar to the first embodiment, a high frequency signal input from the input terminal 21 is distributed to the output terminal 22 by input/output coupling capacitors 25, 26, split ring resonators 29, 30, and an interstage coupling degree of 12. Input/output coupling capacitor 25.
27, split ring resonators 29, 31, interstage coupling degree k13 to distribution output terminal 23, input/output coupling capacitor 25.28, split ring resonators 29, 32, interstage coupling degree +4 to distribution output terminal 24 , are output respectively.

According to the above configuration, it is possible to form a three-way divider having band-pass characteristics in the same way as a two-way divider.

Although the shapes of the split ring resonator are circular and rectangular, it goes without saying that the shape is not limited to this and any arbitrary shape can be considered. Further, although the case where the number of stages of the split ring resonators forming the bandpass JJ wave filter is two stages is shown, it goes without saying that the number of stages can be set so as to satisfy desired characteristics. Furthermore, although the input/output coupling is capacitive coupling, tap coupling or inductive coupling may be used.

Effects of the Invention As described above, the present invention realizes a divider having band-pass characteristics by coupling a split ring resonator to which a high-frequency human input signal is applied to a plurality of split ring resonators. It is possible to significantly suppress fluctuations in the signal source and generation of spurious signals due to wraparound, and the effect is significant.

[Brief explanation of drawings]

FIG. 1 is a plan view of a distributor according to a first embodiment of the present invention, FIG. 2 is a plan view of a distributor according to a second embodiment of the present invention, and FIG. 3 is a plan view of a conventional distributor. be. 11.21...Input terminal, 12-13.22-24.
...Distribution output terminal, 14-16.25-27...Input/output coupling sensor, 17-19.29-32...Split ring resonator. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 3 L<''

Claims (1)

[Claims] It has multiple resonators formed by connecting both open ends of a transmission line such as a strip line or microstrip line with capacitive elements, and the resonator to which a high frequency signal is input is coupled to multiple other resonators. Distributor.