2 results about "Microstrip resonators" patented technology

The application discloses a double-rotation-in-rotation-out structure microstrip resonator and microwave filter, and relates to the technical field of microwave communication. The opening end of the first rotation-in-rotation-out structure and the opening end of the second rotation-in-rotation-out structure are opposite and diagonally symmetrical. The first rotation-in-rotation-out structure and the second rotation-in-rotation-out structure are both double-line structures, which are wound in a character-shaped manner at a set initial position, and when wound to a preset terminal position, the inner line is elongated until a U-shaped structure surrounds the part wound in the character-shaped manner. The outer lines of the two double-line structures are connected through a first microstrip line. The double-line structure is composed of two parallel microstrip lines, and the two parallel microstrip lines are connected through a preset microstrip line at the corresponding set initial position. The application aims to solve the problem that it is difficult to achieve extremely weak coupling of the resonator at a small interval, and improve the stability of the coupling.

The application belongs to the field of thin film microstrip filter, and particularly relates to a miniaturized ultra-wideband planar filter. The application adopts a compact stub structure through an electric bridge, the stub length and interval are optimized according to the electromagnetic coupling characteristics of the 3.1-10.6 GHz frequency band, and the matching conditions of the characteristic impedance and the resonator and the dielectric substrate are strictly met; and further, the planar coupling path of the electric bridge is combined with the three-dimensional coupling of the gold wire to form a composite coupling mechanism of 'planar + three-dimensional', cooperating with the miniaturized configuration of the microstrip resonator, the overall size of the device is reduced by more than 30%, while the group delay is greatly reduced (from the traditional 0.68 ns to 0.33 ns @ 8.3 GHz), the coupling value between resonators is significantly improved, and finally the ultra-wideband coverage is realized, and the in-band interference signals can be effectively suppressed. The application effectively solves the problem in the prior art that the traditional electric bridge coupling only relies on the planar structure, the coupling path is single, the coupling value is limited, and it is difficult to balance the bandwidth and miniaturization.