34 results about "Cylindrical resonator" patented technology

A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.

A HOM attenuated high frequency resonator provided with a cylindrical resonator cavity on the outer surface of which are arranged three circular tapered waveguides with two symmetrically arranged ridges each, the cut-off frequency of the waveguide base mode being kept constant over the length of the waveguides by varying the height of the ridges, and the ridge waveguides being provided at their end of the smaller diameter with an impedance transformer each for the broadband adjustment of the coaxial line is to be cost-efficiently manufacturable as a compact structure and is to be of improved attenuation properties while at the same time having, relative to prior art arrangements, a high shunt impedance for the fundamental modes.

The invention discloses a micro-wave low-band TM010 mode high-selectivity cavity dielectric filter, which is at least provided with two cylindrical cavity resonators, wherein cylindrical micro-wave dielectric materials are arranged in the cavity resonators and are provided with resonant frequency regulation holes, the cylindrical cavity resonators are numbered according to the sequence, a centralized coupling window is arranged between the two cavity resonators with adjacent serial numbers, resonant frequency adjustment screws and an inter-cavity coupling strength adjustment screw extend into the resonant frequency regulation holes of the cylindrical micro-wave dielectric materials of the cavity resonators and the centralized coupling window respectively, the micro-wave dielectric materials in the head and tail cavity resonators are also provided with probe holes, and probes of input / output interfaces are inserted into the corresponding probe holes respectively. The resonance mode of the metal cylindrical resonators of the filter is a TM010 mode, the electromagnetic field has a simple structure as well as axially symmetrical and even distribution, and the filter has high quality factor, small loss, large power capacity, and small volume, thereby satisfying the need of the development of communication products toward miniaturized and high integration directions.

The invention discloses a measuring system for a ferrite dielectric constant. The measuring system comprises a microwave signal source, wherein one path of output signal of the microwave signal source is connected with a coaxial port of a first waveguide coaxial converter; a precision attenuator, a cylindrical resonator, an isolator and a coaxial wave detector are sequentially connected to a waveguide port of the first waveguide coaxial converter through a waveguide; the coaxial output end of the coaxial wave detector is connected with the microwave signal source; a second waveguide coaxial converter is coupled to the waveguide through a directional coupler; another path of output signal of the microwave signal source is connected with a coaxial port of the second waveguide coaxial converter; and a constant magnet is arranged above the cylindrical resonator. The measuring system has the advantages of high measuring precision, stable performance and simpleness and convenience in use and operation, and is suitable for being used in occasions such as laboratories and factories and is an ideal instrument for measuring the ferrite dielectric constant.

A dual-mode dielectric resonator using two dissimilar modes is described, the dissimilar modes supported by a ridge waveguide resonator and a ¼-wavelength (¼λ) metalized cylindrical resonator within a single, metal-coated dielectric block. Each ridge waveguide resonator and cylindrical resonator form a dual-mode resonator pair. Coupling control posts set between the ridge waveguide resonator and cylindrical resonator can adjust their coupling. Multiple pairs of ridge waveguide / cylindrical resonators are fabricated in the same dielectric block to form a coupled resonator bandpass filter, including an 8-pole or 10-pole dielectric resonator filter, for 5G or other applications. Transmission zeros can be introduced by a metalized blind hole extending vertically between two ridge waveguide resonators or a microstrip extending between two dual-mode resonator pairs between which there exists no partial-width or full-width dielectric window.