RU207101U1 - SELECTIVE DEVICE BASED ON TWO-RING SLOT RESONATOR - Google Patents

Abstract

The utility model relates to frequency-selective microwave devices of the strip type, namely, selective devices, and can find application in transceiver devices in the microwave frequency range. A selective device based on a two-ring split resonator is implemented on the basis of the principle of placing a double ring split resonator on one side of a dielectric substrate, above a section of a strip-type transmission line (at the discretion of the developer, depending on the design feasibility), on which the pivot point is located, oriented to the center of the conducting strip a strip-type transmission line located in the center of a double ring cut resonator, around which, in order to tune the resonant frequency, this double ring resonator is mechanically rotated, together with a dielectric substrate on which it is placed. 1 ill.

Description

The claimed utility model relates to frequency-selective microwave devices of the strip type, namely, selective devices, and can be used in transceiving devices of the microwave (microwave or EHF) frequency range.

An analogue to the proposed device is a notch filter (Notch filter. USSR Inventor's Certificate No. SU 1608760 A1, Publ. 23.11.90, Bul. No. 43), in which, in order to expand the frequency band of the obstacle, around the conductive transmission line of the strip type, on one side of the dielectric substrate, 3-4 U-shaped quarter-wave metallized strip segments are placed near the conductive strip, oriented symmetrically relative to a line perpendicular to the strip-type transmission line. They act as resistance inverters. The distance between the nearest ends of the regions of electromagnetic coupling of adjacent half-wave conductors is equal to a quarter of the wavelength.

Essential design features common to the claimed device are:

strip-type conductive transmission line;

metallized strip segments (in the claimed device, such a segment is a double ring cut resonator).

The disadvantage of this filter is the impossibility of tuning the resonant frequency.

The prototype for the proposed device is a notch filter (Microwave notch filter. USSR Inventor's Certificate No. SU 1739408 A1, Publ. 07.06.92, Bulletin No. 21), which, in order to increase selectivity and improve matching in a wide frequency range, consists of of two U- and Q-shaped configured strip segments located also on different sides with respect to the strip-type transmission line conducting the strip and oriented symmetrically with respect to a line perpendicular to this strip transmission line. The Q-shaped segment is connected by a quarter-wave conductor to the transmission line.

Essential design features common to the claimed device are:

strip-type transmission line (in the claimed device, a coplanar transmission line equipped with two metallized areas (polygons) around the conductive strip is selected);

two strip segments (in the claimed device it is a double annular split resonator, consisting of two concentric split rings).

The disadvantage of this filter is the impossibility of tuning the resonant frequency.

The technical result consists in creating a selective device that provides the possibility of mechanical frequency tuning by rotating the split concentric resonator relative to the center of the split rings.

To achieve the technical result in a selective device based on a two-ring resonator, consisting of a strip-type transmission line (in the inventive device, a coplanar transmission line equipped with metallized polygons around a conductive strip), a double-ring split resonator is placed on one side of the dielectric substrate above the strip-type transmission line, on which is a point of rotation, oriented to the center of the conductive strip of the strip-type transmission line and located in the center of the double ring cut resonator, around which, for the purpose of mechanically tuning the resonant frequency and the possibility of providing notch filtering, this double ring resonator is mechanically rotated, together with the dielectric substrate on which it is posted.

The claimed utility model is illustrated by Fig. 1, where 1 is a dielectric material (ring substrate) having a circular configuration, 2 is a double ring cut resonator, 3 are sections of a metallized polygon of a coplanar transmission line, 4 is a transmission strip of a transmission line, 5 is a point, relative to which rotates the two-ring split resonator together with the dielectric substrate 1 around the conductive strip 4.

The selective device works as follows. For operating operation, a selective device (a double split ring resonator located on a dielectric substrate) is placed on the section of the strip-type conductive line of the device above the conductive strip of the strip-type transmission line (for example, coplanar), with the possibility of providing notch filtering, and the change in the resonant frequency is achieved in by changing its spatial orientation relative to the transmission line by mechanical rotation relative to the center of the rings, oriented to the center of the conducting strip. The specified mechanical rotation can be carried out, for example, using an additionally installed protrusion or handle (not indicated in Fig. 1) or in another way. After providing the required resonant frequency, by mechanically rotating the double ring resonator on the substrate relative to the pivot point oriented to the center of the strip-type transmission line conducting the strip and located in the center of the double ring cut resonator, the location of the rings with the substrate relative to the transmitting strip is fixed in the selective device.

Technical appraisal and economic advantages of the claimed object over the known ones lies in the possibility of mechanical frequency tuning of the claimed device in any arbitrarily chosen place of the strip-type transmission line (at the discretion of the developer from the point of view of constructive feasibility).

Claims (1)

Selective device based on a two-ring cut resonator with the possibility of tuning the resonant frequency, consisting of a strip-type transmission line, a double cut-off ring resonator on a dielectric substrate, providing the possibility of notch filtering and mechanical tuning of the resonant frequency of the filter, characterized in that the double cut-off resonator is placed on one the side of the dielectric substrate, above the strip-type transmission line, namely the coplanar transmission line, on which the pivot point is located, oriented to the center of the strip-type transmission line conducting strip and located in the center of the double ring cut resonator, around which the mechanical rotation of this double ring resonator is carried out, together with the dielectric substrate on which it is placed.

Images