13 results about "Stripline resonator" patented technology

A sensor element for testing a flat-surface data carrier has a spin resonance feature. The sensor element includes a magnetic core with an air gap, into which the flat-surface data carrier can be inserted for testing, a polarization device for generating a static magnetic flux in the air gap, and a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap. The resonator device contains at least two stripline resonators, which are designed and configured to be operated at different excitation frequencies.

A sensor element is for testing a planar data carrier with a spin resonance feature. The sensor element includes a magnetic core having an air gap into which the planar data carrier can be inserted for testing purposes, a polarization device for generating a static magnetic flux in the air gap, and a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap. The resonator device has at least two stripline resonators positioned at different positions in the air gap. The polarization device generates an in-homogeneous magnetic flux in the air gap so that the static magnetic flux has a first field strength at the position of a first stripline resonator and a second, different field strength at the position of a second stripline resonator.

A sensor element is for testing a planar data carrier that has a spin resonance feature. The sensor element includes: a magnetic core having an air gap into which the planar data carrier can be inserted for testing purposes; a polarization device for generating a static magnetic flux in the air gap; and a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap. The resonator device has a stripline resonator and a supply structure for the stripline resonator and is designed to generate a high-frequency field with circular polarization owing to the geometry of the stripline resonator and / or the geometry of the supply structure.

The present invention proposes a double-sided parallel stripline-based differential-to-differential filter with broadband differential-mode and common-mode non-reflection characteristics. The filter comprises two pairs of input or output double-sided parallel stripline transmission lines printed on a dielectric substrate, multiple half-wavelength double-sided parallel stripline resonators, one or more quarter-wavelength double-sided parallel stripline resonators on each side of axis AA′, and resistors connecting the front and back transmission lines of the double-sided parallel stripline transmission lines. Because the resonators can only be excited by differential-mode signals, they exhibit frequency-selective characteristics, but cannot be excited by common-mode energy and therefore lack frequency-selective characteristics. Therefore, common-mode energy is dissipated over a wide bandwidth by matching resistors loaded at the transmission line terminals, effectively broadening the non-reflection bandwidth of common-mode energy. Furthermore, by increasing the number of half-wavelength and quarter-wavelength double-sided parallel stripline resonators, improved passband selectivity can be achieved.

This utility model discloses a shielded filter based on an integrated stripline resonator, belonging to the field of filter technology. It includes a resonator body with an RF connection line connected to it for signal input and output. Two resonator bodies are connected by a connecting post. A cavity houses both resonator bodies, shielding them. A mounting block is externally connected to the cavity, featuring through holes and a conformal curved surface for mounting the RF connection line. This shielded filter, through the cooperation of the resonator body and the cavity, forms a filter with a shielded cavity. This structure achieves filtering, and the integrated stripline design makes the filter easy to assemble, highly accurate, and ensures phase consistency.

The invention relates to the technical field of microwave communication, in particular to a miniaturized broadband LTCC (Low Temperature Co-Fired Ceramic) band-pass filter. The filter comprises a multi-layer LTCC dielectric substrate, the LTCC dielectric substrate comprises six sintered compact ceramic layers which are arranged from top to bottom, the first ceramic layer is a top layer, the second ceramic layer and the fifth ceramic layer are respectively provided with a U-shaped strip line resonator, the third ceramic layer and the fourth ceramic layer are respectively provided with a spiral inductance resonator, and the fourth ceramic layer is provided with a spiral inductance resonator. The first ceramic layer, the second ceramic layer, the third ceramic layer, the fourth ceramic layer, the fifth ceramic layer and the sixth ceramic layer are sequentially arranged from top to bottom, metalized blind holes are formed in the second ceramic layer to the fifth ceramic layer, and asymmetric L-shaped slotted grounds are etched on the bottom layers. The fractal geometric resonator is adopted, and the effective size of the fractal geometric resonator is 35% of that of a traditional design; a six-layer LTCC laminated structure is adopted, and layers are in three-dimensional interconnection through vertical blind holes; a U-shaped strip line resonator and a spiral inductance resonator are arranged to form magnetoelectric hybrid coupling; the bandwidth is expanded to about 40% of the relative bandwidth through the asymmetric L-shaped slots.

The invention discloses a square SIW (substrate integrated waveguide) cavity and strip line resonator mixed miniaturized filter, which comprises a dielectric layer, the top metal layer is located on the upper surface of the dielectric layer; the middle metal layer is located in the middle of the dielectric layer; the bottom metal layer is located on the lower surface of the dielectric layer; the metalized through hole array penetrates through the dielectric layer and is connected with the top metal layer and the bottom metal layer; the first metalized blind hole and the second metalized blind hole are used for connecting the middle metal layer and the bottom metal layer; the first metalized through hole and the second metalized through hole are connected with the top metal layer and the bottom metal layer; a feed microstrip line; the strip line resonator is embedded in the SIW cavity, the hybrid structure introduces an additional transmission zero point for the filter while reducing the size of the filter and reducing radiation loss, and the stop band frequency selection characteristic of the filter is improved.

The present invention relates to a multiband filter and a communication device. The multiband filter includes a plurality of multimode resonators, wherein each of the multimode resonators is a strip line resonator including a grounding part and two or more non-grounding branches for achieving multiple modes.

A sensor element for testing a flat-surface data carrier having a spin resonance feature. The sensor element includes a magnetic core with an air gap, into which the flat-surface data carrier can be inserted for testing, a polarization device for generating a static magnetic flux in the air gap, a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap, having at least one stripline resonator fed by a signal source, and a modulation device for generating a time-varying magnetic modulation field in the air gap parallel to the static magnetic field. The modulation device has a plurality of modulation coils, which are designed and configured for generating different modulation frequencies so that the modulated magnetic field generated by the modulation device, together with the polarization device, has different modulation frequencies at different locations within the air gap.

A sensor element is for testing a flat data carrier having a spin resonance feature. The sensor element includes a magnetic core having an air gap, which is delimited by two pole surfaces of the magnetic core and into which the flat data carrier can be inserted in order to be tested, a polarization device for generating a static magnetic flux in the air gap, and a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap. The resonator device has a signal source and a plurality of stripline resonators which are simultaneously fed from the signal source, and the stripline resonators are formed in a planar manner with a main extension plane which is plan-parallel to at least one of the pole surfaces of the magnetic core.

A sensor element is for testing a flat data carrier having a spin resonance feature. The sensor element includes a magnetic core having an air gap, which is delimited by two pole surfaces of the magnetic core and into which the flat data carrier can be inserted in order to be tested, a polarization device for generating a static magnetic flux in the air gap, and a resonator device for exciting the spin resonance feature of the data carrier to be tested in the air gap. The resonator device has a signal source and a plurality of stripline resonators which are simultaneously fed from the signal source, and the stripline resonators are formed in a planar manner with a main extension plane which is plan-parallel to at least one of the pole surfaces of the magnetic core.

The application discloses a miniaturized three-passband filter of a substrate integrated waveguide built-in stripline resonator, which is composed of two SIW resonators, two one-end short-circuit and the other-end open-circuit lambda / 4 stripline resonators and two two-end open-circuit lambda / 2 stripline resonators, and the resonators form a three-passband filter in a series topology structure. The application utilizes the TE101 mode of the two SIW resonators, firstly, two one-end short-circuit and the other-end open-circuit lambda / 4 stripline resonators are symmetrically placed in the two SIW resonators to form a two-stage point and double-passband filter, and on the basis, the two one-end short-circuit and the other-end open-circuit lambda / 4 stripline resonators are coupled with the two two-end open-circuit lambda / 2 stripline resonators to form a two-stage point and three-passband filter. By embedding four stripline resonators in the SIW cavity, the miniaturization of the overall structure is realized, and the circuit area can be significantly reduced by about two-thirds while the number and order of passbands are maintained.

The present invention provides a filter patch antenna based on three-dimensional packaging integration. Its main materials include a five-layer dielectric substrate, a four-layer adhesive plate, and an overall circuit structure, which includes a signal transmission metal post, a coupled stripline, a quarter-wavelength stripline resonator, an open-circuit stripline branch, a feed stripline, a microstrip patch, a grounding metal post, and a ground plane. The novel filter antenna proposed in this invention features high integration, miniaturization, high selectivity, a wide stopband, and packaging characteristics, making it well-suited for wireless communication systems.