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.

Provided is a microwave plasma discharge lamp apparatus which includes a rectangular waveguide having a rectangular shape one end of which is closed and the other end is open and receiving a microwave through an opening to put out linearly polarized microwaves; a discharge lamp; a resonator cavity, formed in a cylindrical shape, one end of which is open, which is disposed to surround the discharge lamp, and which is made of a conductive mesh, thereby allowing the passage of the light from the discharge lamp; and a phase shifter, which has a cross-shaped waveguide opened in a propagation direction of the linearly polarized microwaves, is disposed between the other end of the rectangular waveguide and one end of the resonator cavity, and receives the linearly polarized microwaves from the rectangular waveguide to generate elliptically polarized microwaves in the cylindrical resonator cavity. The elliptically polarized microwaves discharge the discharge lamp.

An electrodeless lighting system having a resonator with different aperture ratio portions, the electrodeless lighting system comprises: an electrodeless bulb for emitting light by plasmarizing light emitting materials filled therein; and a cylindrical resonator receiving the electrodeless bulb in an inner space thereof and having light transmission holes adapted to shield microwaves, which have been generated from a microwave generator and then applied to the inner space, from being discharged to the exterior, and transmit light emitted from the electrodeless bulb. Wherein, the resonator comprises: a low aperture ratio portion having a low aperture ratio extended from a certain region of a circumferencial direction of the resonator in a height direction of the resonator such that a relatively small amount of microwaves could be leaked; and a high aperture ratio portion having a relatively high aperture ratio as compared to the low aperture ratio portion, the high aperture ratio portion formed at the rest region of the circumferencial direction of the resonator such that a great amount of light emitted from the electrodeless bulb could be transmitted to the outside of the resonator.

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 relates to a large number of high-overload cylindrical resonant gyroscopes used in bombs, which comprises a metal cylindrical resonator, a capacitance detection plate bracket is fixedly fixed on the inner coaxial center, and a capacitance detection plate is fixedly connected to the upper end of the capacitance detection plate bracket; There is an electromagnetic excitation seat fixedly connected below, and the outer part of the resonator is located above the electromagnetic excitation seat with an upper shell; an excitation head is arranged on the electromagnetic excitation seat, the upper part of the excitation head is sintered with the electromagnetic excitation seat, and the lower part of the excitation head is a bare part. The excitation coil is wound; a plurality of binding posts are sintered on the upper casing; the side wall of the resonator adopts a stepped structure, which is composed of two parts: a resonance ring and a vibration-guiding ring arranged up and down; the capacitance detection plate is sputtered along the circumference. The 8 electrodes evenly distributed in the direction are led to the terminals of the upper casing; the diameter of the inner ring of the electrodes is smaller than the diameter of the inner ring at the upper end of the resonant ring, and the diameter of the outer ring of the electrodes is larger than the diameter of the outer ring at the upper end of the resonant ring. The invention improves the range and the anti-overload performance of the metal cylindrical resonant gyroscope.

The invention belongs to the technical field of vibrating gyroscopes, and discloses a chemical trimming method for the second harmonic error of a quartz cylindrical resonator. The method includes steps: A. Obtaining the eigenfrequency and frequency cracking of the resonator through a frequency sweep method and the orientation of the intrinsic rigid axis; B. Calculate the second harmonic error value of the harmonic oscillator according to the eigenfrequency, mass, and amplitude ratio of the harmonic oscillator; C. According to the immersion depth, inclination angle, and second harmonic error of the harmonic oscillator according to chemical modification The second harmonic error value and the etching rate of the chemical etching solution calculate the chemical modification time; D. According to the chemical modification time, use the chemical etching solution to engrave the harmonic oscillator at two positions with an interval of 180° along the low frequency axis. eclipse. The second harmonic error value can be reduced by removing specific mass in the low-frequency axis orientation of the harmonic oscillator n=1 mode. This method can further improve the consistency and symmetry of the harmonic oscillator, reduce the noise in the output signal, and improve the cylindrical vibration. Gyro accuracy.

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.