60 results about "Waveguide resonator" patented technology

The present invention relates to gas detection devices, and in particular to volatile substance sensors, such as respiratory alcohol device sensors. A semiconductor gas sensor device according to the present invention includes a laser structure and an optical waveguide resonator formed in the same compound semiconductor including at least one light emission layer and one light propagation layer. The optical waveguide resonator is formed in the light propagating layer, and a majority thereof is separated from a remainder of the light propagating layer. The laser structure is disposed adjacent a portion of the optical waveguide resonator and is arranged to transmit electromagnetic radiation of a particular wavelength band to the optical waveguide resonator arranged to resonate at the particular wavelength band.

The invention provides a dielectric waveguide filter, a construction method and a dielectric waveguide duplexer. The construction method of the dielectric waveguide filter comprises the following steps: selecting a dielectric material based on a given target passband index; establishing a matrix four-mode dielectric waveguide resonator, and adjusting the size of a rectangular dielectric waveguide to enable the resonant mode frequency to reach a target frequency band; carrying out electromagnetic field distribution analysis on a single four-mode dielectric waveguide resonator with a set size, positioning the distribution position of a resonance mode according to the distribution condition of an electromagnetic field, and respectively embedding four blind holes in the position where the electromagnetic field is strongest in distribution so as to realize polarization fixation and frequency regulation and control on the resonance mode; selecting a coupling topology to construct a dielectric filter based on frequency regulation and control of the four-mode dielectric waveguide resonator; the additional coupling blind holes are added on the basis of the coupling topological structure so as to regulate and control the mutual coupling between the adjacent resonators. According to the technical scheme, the problem that the size of a filter in the prior art is large is effectively solved.

A method for non-invasively identifying a location of a mass or tumor including: providing a patient with a possible mass or tumor; providing a detector including one or more resonant sensors, each sensor including at least one loop resonator, at least one cavity resonator, or at least one waveguide resonator; detecting resonant frequencies at different locations on the patient's skin near locations of the mass or possible tumor; and locating the mass or tumor by noting a location of an atypical resonant frequency.

In an example of an embodiment, a plasma processing apparatus includes a processing container, a stage, an upper electrode, an inlet, and a waveguide device. The stage is provided within the processing container. The upper electrode is provided above the stage, to interpose a space within the processing container. The inlet is configured to introduce high-frequency waves. The high-frequency waves are VHF waves or UHF waves. The inlet is provided at an end of the space in the lateral direction, and extends in a circumferential direction around a central axis of the processing container. The waveguide device is configured to supply high-frequency waves to the inlet. The waveguide device includes a resonator that provides a waveguide. The waveguide of the resonator extends in the circumferential direction around the central axis and extends in the direction in which the central axis extends to be connected to the inlet.

The present invention discloses a multi-input multi-output magnetic dipole antenna, comprising a first submodule and a second submodule, wherein the first submodule and the second submodule are electrically connected, the first submodule has a plurality of back-to-ground coplanar waveguide ports and a first waveguide resonator; the second submodule has a plurality of second waveguide resonators and a magnetic dipole antenna; the first waveguide resonator is configured to form a vertical connection structure with the second waveguide resonator to achieve a second-order filtering frequency response; the back-to-ground coplanar waveguide port is configured to form a cross-coupling structure with the magnetic dipole antenna to achieve two radiation zero points and improve frequency selectivity; a plurality of the magnetic dipole antennas are arranged so that at least two are placed in parallel, and at least one of the magnetic dipole antennas is orthogonal to the at least two parallel magnetic dipole antennas; the multi-input multi-output magnetic dipole antenna can achieve high frequency selectivity and high isolation.

The invention provides a high-compression-degree all-fiber vacuum compression state light source based on a waveguide resonant cavity, and relates to the technical field of quantum optics and quantum information. After laser passes through an isolator and a beam splitter, most of the laser enters a phase modulator, and a small part of the laser serves as background light; after the phase of the laser is modulated by the phase modulator, the laser enters the frequency doubling medium to generate pump light; pumping light returned by the waveguide resonant cavity enters the detector; the detector detects the intensity of the pump light returned from the waveguide resonant cavity, and the narrow-band filter filters the pump light and outputs compressed light; a waveguide crystal in the waveguide resonant cavity depends on laser emitted by the two-end coated tuning laser; the servo control system obtains an error signal through demodulation of a demodulation signal sent by the signal generator and an electric signal output by the detector, the error signal enters a control module of the servo control system to obtain a signal required for controlling the wavelength of the laser, and the wavelength is adjusted in real time by controlling tunable parameters of the laser. And the locking of the laser wavelength and the waveguide resonant cavity is realized.

Air cavity and ceramic waveguide resonator mixed filter solutions are disclosed. According to one aspect, a combined filter assembly includes an air cavity filter coupled to a ceramic waveguide (CWG) filter. The CWG filter exhibits a wall that presses against a rigid plate. Between the rigid plate and a wall of the air cavity filter is a compressible conductive gasket that is compressed between the wall of the air cavity filter and the rigid plate. The air cavity filter and the CWG filter are secured to a support base. The CWG filter is secured to the support base by flexible clamps that allow for thermal expansion of the CWG filter. The flexible clamps are secured to the support base by screws. The support base exhibits surfaces or walls that receive and anchor the screws.

The present invention relates to gas detection devices, and more particularly to volatile substance sensors, such as breath alcohol sensors. A semiconductor gas sensor device according to the present invention includes a laser structure and an optical waveguide resonator formed in the same compound semiconductor, the compound semiconductor including at least one light-emitting layer and a light-propagating layer. The optical waveguide resonator is formed in the light-propagating layer and is largely separated from the remainder of the light-propagating layer. The laser structure is positioned adjacent to a portion of the optical waveguide resonator and is arranged to transmit electromagnetic radiation at a specific wavelength band to the optical waveguide resonator, which is arranged to resonate at the specific wavelength band.

The invention discloses a single-pole double-throw switch filtering assembly based on an LTCC (Low Temperature Co-Fired Ceramic) technology. A switching circuit and an LTCC resonator are integrated, and the on-off state of a switching diode in the working process is controlled by an externally applied direct current bias voltage. When the diode is in a conducting state, the parasitic inductor and the capacitor form series resonance, and the equivalent coupling admittance converter passing through the resonator can be inverted and equivalent to an open circuit, so that a branch signal is cut off, and channel isolation is realized; and when the diode is in a closed state, the electromagnetic field distribution of the substrate integrated waveguide resonator is not obviously influenced, the filter keeps normal work, and signal passband transmission is realized. According to the structure, on one hand, the SIW waveguide integration form is used for achieving the low insertion loss characteristic; and on the other hand, the stop-band suppression degree is effectively improved by introducing the cross coupling topology. The whole circuit has the advantages of being compact in structure, low in loss, high in isolation degree, excellent in out-of-band rejection performance and the like, and the requirements of 5G and future high-speed wireless communication systems can be met.

Gas detecting devices and in particular volatile substance sensors such as breath alcohol devices sensors. The semiconductor gas sensor device includes a laser structure and an optical waveguide resonator formed in a same compound semiconductor which includes at least one optical emission layer and one optical propagation layer. The optical waveguide resonator is formed in the optical propagation layer and is to its greater part separated from the remaining portion of the optical propagation layer. The laser structure is provided adjacent to a portion of the optical waveguide resonator and arranged to transmit electromagnetic radiation at a specific wavelength band to the optical waveguide resonator arranged to resonate at that specific wavelength band.

The application discloses a dielectric waveguide resonator and a multimode dielectric waveguide resonator, which comprises a dielectric resonant cavity, the dielectric resonant cavity comprises a dielectric body and a metal plating layer wrapping an outer surface of the dielectric body; a metal loading interface is arranged in the dielectric body and is connected with the metal plating layer; the metal loading interface intersects with an intrinsic electric field direction of the dielectric resonant cavity to reduce a main mode frequency of the dielectric resonant cavity. Embodiments of the application provide a dielectric waveguide resonator and a multimode dielectric waveguide resonator, by adding a metal loading interface in a dielectric body of a dielectric waveguide resonator, the size, frequency and unloaded Q value of the dielectric waveguide resonator are kept unchanged, high-order mode harmonics are pushed away, the performance of a low-pass filter is improved, and loss is improved.

The present invention relates to a high-selectivity filtering antenna using a slotted microstrip patch, which includes a TE<subgt;101< / subgt> mode substrate integrated waveguide resonator, an upper dielectric substrate, and a slotted TM<subgt;10 mode microstrip patch stacked from bottom to top. The slotted microstrip patch is coupled and fed through the TE<subgt;101 mode substrate integrated waveguide cavity. By opening a pair of long slots on the microstrip patch, the present invention introduces radiation zeros in the upper stopband without adding an additional filtering circuit, obtaining better filtering performance, making the proposed filtering antenna have high frequency selectivity, and compensating for the disadvantage that the substrate integrated waveguide has poor suppression level outside the high frequency band due to its many modes. The simulation results show that the proposed slotted patch filtering antenna has a good impedance bandwidth (|S<subgt;11|< -10 dB) of 2.9%, the radiation zero is located at 10.86 GHz, the peak gain in the band is 6.5 dBi, and the antenna gain is flat in the passband.

The present invention relates to gas detection devices, and in particular to volatile substance sensors, such as respiratory alcohol device sensors. The semiconductor gas sensor device according to the present invention comprises a laser structure and an optical waveguide resonator formed in the same compound semiconductor comprising at least one light emission layer and one light propagation layer. The optical waveguide resonator is formed in the light propagating layer, and a majority thereof is separated from a remainder of the light propagating layer. The laser structure is disposed adjacent a portion of the optical waveguide resonator and is arranged to transmit electromagnetic radiation at a particular wavelength band to the optical waveguide resonator arranged to resonate at the particular wavelength band.

Gas detecting devices and in particular volatile substance sensors such as breath alcohol devices sensors. The semiconductor gas sensor device includes a laser structure and an optical waveguide resonator formed in a same compound semiconductor which includes at least one optical emission layer and one optical propagation layer. The optical waveguide resonator is formed in the optical propagation layer and is to its greater part separated from the remaining portion of the optical propagation layer. The laser structure is provided adjacent to a portion of the optical waveguide resonator and arranged to transmit electromagnetic radiation at a specific wavelength band to the optical waveguide resonator arranged to resonate at that specific wavelength band.

According to the present invention there is provided optical assembly (1) comprising. a laser (2) which is operable to emit light: an optical wave guide (3) having an input (3a) and an output (3b). the input (3a) of the optical wave guide (3) being optically coupled to the laser (2) so that the laser (2) can input light to the wave guide (3): a resonator (5) which is optically coupled to the wave guide (3) between the input (3a) of the wave guide (3) and the output (3b) of the wave guide (3): and wherein the resonator (5) has a resonant frequency. and wherein the resonator (5) defines an optical path (11): and wherein the resonator (5) is configured so that said optical path (11) is a closed loop: and wherein the resonator (5) is configured to have a periodic change in optical characteristics along said optical path (11) so that the resonator (5) can provide a backreflection which is at the resonant frequency of the resonator: and wherein the periodic change in optical characteristics along said optical path (11) provide an amount of said backreflection, which will provide a first detuning range in which self-injection locking of the laser using said backreflection is achieved, and. a second detuning range wherein a multifrequency comb can be generated within the resonator (5): and wherein the first and second ranges at least partially overlap, so that both self-injection locking of the laser will occur and an optical resonator-based multifrequency comb is output from the wave guide (3), when the assembly (1) is in operation. There is further provided a corresponding method of providing a optical resonator-based frequency comb at an output of a waveguide, using said assembly (1).

The invention relates to the technical field of microwave and millimeter wave wireless communication, and discloses a hybrid electromagnetic coupling structure, a dielectric waveguide filter and a duplexer, the hybrid electromagnetic coupling structure comprises at least two dielectric waveguide resonator units, and an electric coupling window located at the top and a magnetic coupling window located at the bottom are arranged between two adjacent dielectric waveguide resonator units. The electric coupling window and the magnetic coupling window are correspondingly arranged up and down; the electric coupling strength is adjusted by adjusting the height and length design of the electric coupling window, and the magnetic coupling size is adjusted by adjusting the height and length design of the magnetic coupling window; through combination of the electric coupling window and the magnetic coupling window, hybrid electromagnetic coupling between two adjacent dielectric waveguide resonator units is realized. On the premise that the order of the filter circuit is not increased, more accurate and controllable transmission zeros are introduced, and meanwhile linear layout is supported, so that the frequency selectivity and design flexibility of the dielectric waveguide filter circuit are improved, and the requirements of high-frequency applications such as 5G / 6G and satellite communication are met.

The invention relates to the waveguide technology and microstrip line technology field of a millimeter wave communication system, and especially relates to a double-layer substrate integrated waveguide resonator based on a loading capacitor paster, which comprises an upper surface metal clad copper, an upper layer dielectric plate, a middle metal clad copper, a lower layer dielectric plate and a lower surface metal clad copper from top to bottom in sequence. The middle metal clad copper comprises a loading capacitor patch, the two sides of the loading capacitor patch are connected with microstrip line feed parts respectively, and the microstrip line feed parts are arranged on the center line of the loading capacitor patch; the upper dielectric plate and the lower dielectric plate are respectively provided with two groups of metal through holes which are periodically arranged, and the center of the loading capacitor patch is provided with a rectangular groove. According to the invention, the intrinsic resonant frequency of the resonator can be controlled, and the resonant mode and the transmission zero point can be controlled, so that the controllable center frequency and bandwidth can be realized.

This invention relates to a millimeter-wave reflection-free waveguide bandpass filter based on a balanced structure, consisting of a pair of orthogonal couplers and a pair of symmetrically arranged waveguide bandpass filters. The isolation terminals of the couplers are connected to the load. Out-of-band reflected energy phases are superimposed at the isolation ports and absorbed by the load connected to the ports. The reflected energy phases are canceled out at the input and output ports, thus achieving excellent port-free reflection performance. This invention utilizes the high intrinsic quality factor, low loss, and high rectangular coefficient characteristics of waveguide resonators to solve the high dielectric loss problem of traditional microstrip and lumped element-based reflection-free bandpass filters, making high-frequency design easier and suitable for high-power applications.

The invention discloses a patch mutual-coupling-removing antenna based on a full-wave-band resonator. The patch mutual-coupling-removing antenna comprises two upper-layer metal patches, a middle-layer metal patch, two layers of dielectric substrates, a bottom-layer metal grounding surface and two metal probes. The two upper-layer metal patches are of rectangular structures with the same size and are arranged on the upper surface of the upper-layer dielectric substrate side by side left and right; the middle-layer metal patch is positioned between the two layers of dielectric substrates; the bottom-layer metal ground plane is located on the lower surface of the lower-layer dielectric substrate, and the two metal probes are connected with the middle-layer metal patch; wherein the middle-layer metal patch forms a strip-shaped resonator. A constant-amplitude and anti-phase electric field exists between the upper-layer metal patch and the middle-layer band-shaped resonator, and the position of a feed port is regulated and controlled to enable the feed port to fall at a weak field region, so that port decoupling can be realized. And meanwhile, the band-shaped resonator only prolongs the propagation path in the vertical direction, so that the beam width of the antenna can be expanded without adding an additional parasitic unit, and the directional diagram of the antenna is not influenced.

The invention discloses a low-fluctuation double-end-direction radiation vertical polarization antenna which comprises a hole loading type double-face patch resonator and a two-end open-circuit substrate integrated waveguide resonator. And the two hole loading type double-sided patch resonators are symmetrically arranged on the left side and the right side of the two-end open-circuit substrate integrated waveguide resonator. The two-end open-circuit substrate integrated waveguide resonator is fed from the bottom to the center by a coaxial line to form an internal homodromous vertical electric field. The hole loading type double-sided patch resonator forms four equidirectional magnetic currents at two ends and a reverse magnetic current in the middle, and the four equidirectional magnetic currents and the reverse magnetic current are superposed with equivalent magnetic currents of the open-circuit substrate integrated waveguide resonators at two ends, so that low-fluctuation vertical polarization double-end radiation is realized, and bidirectional radiation is direct radiation.

Gas detecting devices and in particular volatile substance sensors such as breath alcohol devices sensors. The semiconductor gas sensor device includes a laser structure and an optical waveguide resonator formed in a same compound semiconductor which includes at least one optical emission layer and one optical propagation layer. The optical waveguide resonator is formed in the optical propagation layer and is to its greater part separated from the remaining portion of the optical propagation layer. The laser structure is provided adjacent to a portion of the optical waveguide resonator and arranged to transmit electromagnetic radiation at a specific wavelength band to the optical waveguide resonator arranged to resonate at that specific wavelength band.

A photonic chip includes a substrate and several nanophotonic devices extending laterally away from an edge of the substrate. Each nanophotonic device is free-standing where it extends laterally past the edge of the substrate, with each neighboring pair of nanophotonic devices forming a gap therebetween. Atoms trapped in optical tweezers may be transported into the gap and close enough to a nanophotonic device that the atoms strongly couple to the nanophotonic device. Each nanophotonic device may include a waveguide, resonator, coupler, or a combination thereof. To excite modes of a nanophotonic device, a free-space optical beam may be coupled into a distal end of the nanophotonic device. A top face of each nanophotonic device may be reflective to create an optical lattice over the top face. An atom may then be trapped in the potential minimum of the optical lattice that is closest to the top face.

The invention relates to a miniaturized double-ridge dual-mode dielectric waveguide resonator and a filter comprising the resonator. The resonator comprises a frequency adjusting blind hole in the center of the upper surface, and an upper ridge and a lower ridge which are arranged on the left side and the right side of the frequency adjusting blind hole respectively and are parallel to each other. The ridge waveguide has excellent physical characteristics of low dominant mode cut-off frequency, so that the resonator can independently control a dominant mode and a high-order mode and has the characteristic of miniaturization. The miniaturized four-order rectangular double-ridge dual-mode dual-passband dielectric waveguide filter is realized by adopting the resonator, the dual-passband filter controls the frequency of a main mode by utilizing the depth of a blind hole, adjusts the frequency of a high-order mode by utilizing the depth of the double ridges, and independently controls the coupling coefficient of low frequency and high frequency by utilizing the length of a coupling window and the depth of a slotting; and dual-mode independent control is achieved while the small size is achieved.

This invention belongs to the field of microwave circuit technology, specifically providing a fourth-order filter based on a half-mode resonator to achieve performance characteristics of small size, high selectivity, and high out-of-band suppression. The invention includes: a port coupling structure, namely an input coaxial port and an output coaxial port; a filter cavity structure, namely the cavity itself; a window coupling structure, namely a long-side window coupling via and a short-side window coupling via; and a tuning structure, namely a first tuning structure, a second tuning structure, a third tuning structure, and a fourth tuning structure. This invention utilizes the high dielectric constant of the cavity itself to create a virtual magnetic wall, thereby realizing a half-mode operating dielectric waveguide resonator, and then uses four resonators to form a fourth-order bandpass filter. Due to its novel design concept, this invention reduces the size by approximately 50% compared to traditional fourth-order bandpass filters. This invention can be used in communication systems and millimeter-wave related applications.

The invention discloses a one-to-many-way substrate integrated waveguide broadband filtering power divider. A plurality of circularly symmetrically distributed three-terminal short-circuited T-type stripline resonators are respectively connected correspondingly to a central circular substrate integrated waveguide resonator and a peripheral fan-shaped substrate integrated waveguide resonator. The field distribution characteristics of the three-terminal short-circuited T-type stripline resonator are utilized to adjust the coupling between the resonators on each channel and the isolation between the T-type stripline resonators, thereby realizing a one-to-many-way substrate integrated waveguide broadband filtering power divider. The device has a multi-channel output capability and broadband working characteristics, and can take into account the fusion degree of filtering and power division, the order of filtering response, the consistency of output channel response, the stopband bandwidth and loss.

The invention belongs to the field of communication circuit elements, and particularly relates to a heterogeneous waveguide resonator and a processing method thereof, and the passband, the rectangularity and the out-of-band performance of a filter of the resonator are improved through an inclined electrode; the oxide layer and the piezoelectric film material layer are made of specific thickness and materials, so that the signal excitation bandwidth of the resonator is increased, the reliability is high, and the resonator is more suitable for 5G communication; the advantage film layer is arranged between the oxide layer and the piezoelectric film material layer, so that the bandwidth of signal excitation is further widened, and the production cost is effectively reduced by optimizing the material combination and the technological process.

The present invention relates to a tunable waveguide resonator and a method of tuning a frequency of the tunable waveguide resonator. The waveguide resonator comprises a waveguide part having a plurality of walls where one of the plurality of walls at least partly comprises a tuning element. The tuning element has a first main surface facing toward a first main surface of an inner wall of one other wall of the plurality of walls. The tuning element is caused to, in response to a change in a temperature of the tuning element be reversibly displaced with respect to a reference plane of the first main surface of the tuning element along an extension perpendicular to the first main surface of the one other inner wall and whereby changing a dimension of a cavity of the tunable wave-guide resonator.

This invention discloses a single-cavity, four-mode, dual-passband substrate integrated waveguide differential filter. Its top layer metal is a square metal ground with four pairs of L-shaped slots; the middle layer metal consists of two pairs of back-to-back E-type metal strips; two metallized vias connecting the top and bottom metals are distributed along one of the diagonal lines of the structure; the short ends of each E-type metal strip are connected to the bottom metal layer through metallized blind vias. This invention constructs a substrate integrated waveguide resonator loaded with E-type strips, utilizing its four modes that support differential operation with high controllability. Combined with coplanar waveguide feed line coupling to E-type strips, a diamond coupling topology with three coupling paths, non-resonant modes focused on the semi-circular structure of the E-type strips, and suppression of higher-order modes, this invention achieves a single-cavity, four-mode, dual-passband substrate integrated waveguide differential filter with multiple transmission zeros, while also considering size, high-frequency stopband width, and high / low frequency band ratio.

The invention discloses a broadband dual-polarized antenna and an antenna array for 5G millimeter wave communication, and the antenna comprises a dielectric substrate, a substrate integrated waveguide resonator, a radiation groove, a microstrip patch resonator, a plurality of arc-shaped gaps, and a feed input structure. The substrate integrated waveguide resonator comprises a plurality of first metalized through holes which are circumferentially arranged along the edge of the dielectric substrate at intervals, a first metal layer arranged on the upper surface of the dielectric substrate and a second metal layer arranged on the lower surface of the dielectric substrate, the radiation groove is formed in the first metal layer, and the center of the radiation groove coincides with the center of the first metal layer; the microstrip patch resonator is printed in the center of the first metal layer and located on the inner side of the radiation groove, the multiple arc-shaped gaps are formed in the outer side of the radiation groove, and the feed input structure comprises two second metalized through holes and two feed probes which are arranged in the microstrip patch resonator. According to the invention, the dual-polarized radiation with wide impedance bandwidth, stable high gain and high port isolation of the antenna is realized, and the manufacturing cost is reduced.

A quantum device includes a first waveguide, an optical resonator that is coupled to the first waveguide, a first light source that introduces first light into the first waveguide, and a second light source that irradiates the optical resonator with second light. The optical resonator includes a second waveguide extending in a first direction and a color center provided in the second waveguide. The second light source has an optical axis in a second direction perpendicular to the first direction, and the color center is irradiated with the second light.