82 results about "C banding" patented technology

S-band, C-band or X-band microwave powered linear accelerators capable of delivering therapeutic photon and electron beams are mounted to a gantry with extensions to hold multiple accelerators and are combined with a kV CT for 3-D conformal—IMRT and IGRT to treat a patient by SSD or SAD methods and in a full circle. The invention's tertiary collimator system consists of semi-automated reusable custom field shaping with tungsten powder or melted Cerrobend blocks. The beam's intensity modulation is by means of simultaneous but independently operating multiple accelerators. This system's multiple accelerators enable to avoid interrupted subfractionated radiation therapy to each treatment fields. Hence its effective dose rate at the tumor site is high. The improved radiobiology reduces the total radiation dose to treat a tumor, reducing the incidence of developing second primary tumors is also minimized.

A C-Band Disinfector disinfects objects placed within the device by subjecting the objects to closed-loop emissions of UV-C radiation. UV-C sensors measure reflected UV-C radiation and control the period of operation of the device. In an additional embodiment, UV-C radiation is transmitted by fiber-optic cable to a particular area of an object to be disinfected. After the prescribed dose is applied, the fiber-optic cable is moved to a new area of the object, and the UV-C disinfection process continues until all areas of the object have been disinfected by exposure to the prescribed dose of the UV-C radiation.

Multiple-wavelength VCSEL array apparatus and method having a high contrast grating (HCG) mirror which can be implemented on a single substrate in which only the dimensions of the HCG (e.g., duty cycle or the period) need be changed to alter the wavelength of a given VCSEL in response to changing the reflectivity phase of the HCG mirror. The HCG can be defined by any desired lithographic process. By using a broadband HCG mirror a large wavelength span over 100 nm is provided, such as covering the entire C-band. The HCG multi-wavelength VCSEL array enables single-transverse mode emission and polarization control and scalability with respect to wavelength.

A phased array antenna that can be utilized in one or multiple Global Navigation Satellite Systems. This type of GNSS phased array antenna is often referred to as a CRPA. Various C-Band CRPA embodiments are illustrated to provide advanced performance in a compact real estate size that may fit within L-Band GPS ARINC and L-Band GPS 7-element CRPA size. A Large L-Band CRPA embodiment of the present invention provides for a substantial number of degrees of freedom that can be utilized to provide for advanced beam steering and null steering for advanced interference and multipath mitigation to form nulls over specific geographic regions.

The invention relates to a broadband dielectric resonator antenna based on planar monopole patch excitation, comprising a cylindrical dielectric resonator with a gap, a support foam material, a planar monopole patch, a square metal floor and a feeding SMA connector. The radiation body of the antenna is the cylindrical dielectric resonator with a gap, the top surface is loaded with a metal coating, and the inverted trapezoidal planar monopole patch is adopted for excitation. The dielectric resonator is placed on the metal floor. The foam material of which the dielectric constant is close to 1.0 is used to support the dielectric resonator. The antenna has the advantages of compact and reliable structure, low cost, low processing difficulty and high radiation efficiency, can meet the performance requirement of the working band from 3GHz to 6.5GHz, and is very suitable for a C-band broadband wireless communication system.

Provided are an all-satellite electromagnetic compatibility verification method and system based on an electric propulsion radiation emission simulator. The method includes firstly obtaining a radiation emission parameter of an electric propulsion system under a real ignition condition under vacuum conditions; constructing an electric propulsion electromagnetic radiation emission simulator which can generate the same electromagnetic radiation emission as the radiation emission parameters under the actual ignition conditions of the electric propulsion system; finally, in the all-satellite electromagnetic compatibility test, and the electric propulsion radiation emission simulator is used instead of the electric propulsion radiation emission under vacuum ignition conditions, to complete thetesting and evaluation of the satellite electromagnetic compatibility of the electric propulsion system. According to the all-satellite electromagnetic compatibility verification method and system, the range of radiated interference intensity of an electric thruster working normally to the satellite, and the test frequency band covers the frequency range of 1 GHz to 31 GHz; the magnitude of the electromagnetic radiation interference of the electric propulsion work is confirmed through the testing of three phases, and the electromagnetic radiation effect of the electric propulsion work processdoes not affect the normal operation of the all-satellite communication load in the L-band, C-band, Ku-band and Ka-band.

The invention provides a C-band polarization-reconfigurable microstrip planar array antenna in the technical field of communication. The C-band microstrip planar array antenna comprises three dielectric substrates. A polarization-reconfigurable network comprises a 3dB directional coupler and two one-from-two RF switches. Through switching on or switching off the one-from-two RF switches, a working polarization manner in operation of the antenna can be freely selected. Through using the polarization-reconfigurable network, characteristics of horizontal polarization, vertical polarization, left-handed circular polarization and right-handed circular polarization in the antenna can be realized. The C-band polarization-reconfigurable microstrip planar array antenna has advantages of high gain, low profile, small size, high directional diagram consistency, etc. The C-band polarization-reconfigurable microstrip planar array antenna can be used in satellite and radar communication and some application occasions where multipolarization and miniaturization are required.

The invention provides a C-band space-borne synthetic aperture radar moving object imaging method. The method comprises the following steps: receiving raw echo data, carrying out imaging processing onthe raw echo data through an SAR range migration imaging algorithm, extracting a defocused ROI complex image data matrix S0 comprising moving target information, and initializing equivalent motion parameters alpha and beta of a target in the azimuth direction and distance direction; constructing a focusing operator Gamma (.) by utilizing the equivalent motion parameters alpha and beta; establishing a compressed sensing sparse reconstruction model based on the ROI complex image data matrix S0 and the focusing operator Gamma (.), and reconstructing a model sparse solution X through a soft threshold iterative algorithm; establishing a minimum error model, and updating the equivalent motion parameters alpha and beta through the model sparse solution X; and when judging that equivalent motionparameters alpha and beta meet algorithm terminal conditions, outputting a sparse solution amplitude matrix |X|. The method can obtain a final two-dimensional amplitude image through the parameterizedsparse reconstruction technique, thereby effectively suppressing asymmetrical sidelobes due to higher-order motion of the target.

The invention discloses a miniature C-band band-pass filter with low insertion loss and excellent high-order harmonic suppression, which comprises an input port, an output port, an input inductor, an output inductor, an input capacitor, an output capacitor, five parallel resonance units, four zero set units, two cross-coupled capacitors and the like. All components comprise more than two layers and are realized by low-temperature co-fired ceramic technology, the input inductor, the output inductor, the input capacitor and the output capacitor are in a strip line design according to distributed parameters, intervalve inductors and intervalve capacitors adopt space coupling and distributed parameters, the cross-coupled capacitors are dielectric tablet 'Z'-shaped capacitors, and all the five parallel resonance units are in a three-layer folding and coupling strip line design. The band-pass filter of a stacked structure based on the low-temperature co-fired ceramic technology has the advantages of small size, light weight, high reliability, low insertion loss, excellent high-order harmonic suppression and the like, and meets the requirements of fields such as electronic communication and the like on miniaturization and integration of the electronic components.

A polarization-independent SOA is provided which uses an InP substrate (11) as a semiconductor substrate and uses GaInNAs having introduced tensile strain as an active layer (14). With this configuration, the polarization independence is achieved by introducing the tensile strain, and high saturation optical output power is realized by reducing the film thickness of the active layer (14) as well as the gain peak wavelength is increased by reducing the band gap of the active layer (14) through use of GaInNAs made by adding nitrogen (N) to GaInAs as a material of the active layer (14) so as to achieve high gain especially in C-band and L-band even when band filling exits at the time of injecting a high current into the active layer (14).

A method of positioning a plurality of radar units in a defined area amongst one or more legacy radar units that provide legacy radar coverage in the defined area is disclosed. The steps of identifying a location of each legacy radar unit, setting a threshold altitude, and determining a legacy occultation of each legacy radar unit from a landscape level up to the threshold altitude are also disclosed. Mapping the legacy occultation of the legacy radar units to provide a three dimensional occultation map in the defined area and locating gaps below the threshold altitude in the legacy radar coverage as a function of the occultation map are also disclosed. Identifying a plurality of sites as a function of the gaps where the sites are accessible to receive a radar unit is also disclosed. Determining an anticipated radar coverage of a radar unit positioned at each of the sites and determining a reduction in the gaps as a function of the anticipated radar coverage are also disclosed. Selecting sites as a function of the reduced gaps is also disclosed. X band, C band or S band radar units can be positioned at the selected sites. The threshold altitude can be 10,000 or 15,000 feet. Affected populations and costs can also be considered in radar placement.

The invention discloses a sea surface spilled oil detection method based on a C-band polarized SAR image, and belongs to the technical field of polarimetric radar remote-sensing image processing. Aiming at problems that a conventional method is not clear in relation between spilled oil heat dissipation features and recognition precision and is lower in recognition precision, the method introduces the local wind speed, sea waves and polarization information of a to-be-detected region, combines the polarization and oceanophysics features of an oil spilling region and a suspected oil spilling region, builds a spilled oil detection rule on the basis of supervision information, carries out the comprehensive judgment of the to-be-detected region according to the building result of the rule, improves the spilled oil detection precision, and is of great significance to the protection of a marine environment and ecological resources.

The systems, apparatuses and methods of the present invention set forth improvements to the problems of the current pairing or duplex paradigm, resulting in a dramatic increase in fiber transmission efficiency, accomplished explicitly by restructuring presently-aligned C-Band wavelengths into innovative DWDM transmit and receive formats, and through implementing photonic-wave changes, which directs Ethernet data flow onto new path adaptations. These improvements could reduce line haul expenses significantly, believed to reach a projected 50% less requirement/deployment of fiber strands. This saving would offer owner-operators substantial fiber strand cost reductions, affecting transportation rates of high-bandwidth digital payloads traversing over DWDM networks, and lower usage rates of cross-connections amid multiple equipment inter-exchanging throughout large data centers.

The invention provides a kinematic and dynamic mixed dimensionality reduction solving method for a 10 bar underactuated mechanism. The method comprises the following steps: step 1, a 10 bar mechanism mathematical model is established according to a Radarsat 2 battery panel deployment mechanism, wherein Radarsat 2 is a high resolution commercial radar satellite carrying a C band sensor; step 2, corresponding geometric equation is created according to the 10 bar mechanism mathematical model; step 3, the geometric equation is solved, and a dynamic model is established through combination with the Euler Lagrange equation; step 4, dynamic parameters of a 10 bar mechanism are solved according to the dynamic model. With adoption of the method, the dynamic parameters of the 10 bar mechanism can be solved, sizes of rod members of the Radarsat 2 battery panel deployment mechanism are optimized, and the battery panel deployment process stability and reliability in actual application satellite deployment process are improved.

The invention relates to a novel C-band (4GHz-8GHz) microstrip antenna with a negative permeability material, in particular to a novel antenna with a negative permeability material with a two-sided dendritic structure. The microstrip antenna in the invention comprises a dielectric substrate, a metal radiation patch and a metal ground plate; wherein, an SMA connector connects the metal radiation patch and the metal ground plate and serves as a feed-in interface of radio wave signals of the antenna; dendritic structure cell arrays arranged periodically are etched at both sides of the space around the metal radiation patch and the metal ground plate. When microwaves enter vertically, the negative permeability effect generated by the two-sided dendritic structure can be adopted to improve the signal receiving and transmitting capabilities of the microstrip antenna and increase the antenna gain.

The invention belongs to the technical field of cell biology, and in particular relates to a method for dyeing a Giemsa-C band of a paris plant cell. The method comprises the following steps of: (1) preparing materials, namely putting a white young tender root tip of a eugonic paris plant into an ice water mixture for pretreatment, and fixing by using Carnot I for later use; (2) making tablets, namely dissociating the prepared root tip by using hydrochloric acid, tabletting by using acetic acid, peeling by using liquid nitrogen, dehydrating by using absolute ethanol, and naturally drying in aroom; (3) denaturating, namely pre-denaturating by using hydrochloric acid, and denaturating by using barium hydroxide; (4) performing renaturation, namely performing 2*SSC renaturation; (5) dyeing, namely dyeing by using Giemsa dye liquor; and (6) performing microscopic examination by using an optical microscope. The method for dyeing the Giemsa-C band of the paris plant cell is low in tabletting pollution, high in resolution of a banding pattern and stable and simple in the banding pattern and is easy to operate.

The invention relates to a C-band low-insertion-loss and high-rejection miniature band-pass filter which comprises 50-ohm impedance input/output ports, four parallel resonance units, three inter-stage coupling circuits, a zigzag cross coupling circuit and input and output inductors, wherein the 50-ohm impedance input/output ports are arranged on the surface of the band-pass filter, and the structures are all implemented by using a multilayer LTCC (low temperature co-fired ceramic) process technology. The band-pass filter disclosed by the invention has the advantages of good passband selectivity, good out-of-band rejection, low insertion loss, small volume, light weight, high reliability, good electrical properties, good phase frequency characteristics and linearity, good temperature stability, good electrical property batch consistency, low cost, capability of carrying out mass production, and the like. The band-pass filter is especially suitable to be used as a miniature microwave device in aviation, aerospace and radar systems, intelligent weapons for individual soldiers, and airborne and missile-borne wireless systems.

The invention discloses a quantitative detection method and a quantitative detection device for upconverting fluorescent test strips. The quantitative detection method comprises the following steps: under the excitation of 980nm near-infrared laser, capturing a fluorescent signal emitted by a test strip standard substance by using an image sensor, extracting the brightness values of pixels corresponding to regions, where a T band and a C band are positioned, from the image sensor, and calculating a ratio of the average brightness value of a T-band region to the average brightness value of a C-band region to obtain a linear relationship between the ratio and the correspondingconcentration of an item to be detected; take a plurality of test strips to be detected for detecting different items, extracting the brightness values of the pixels corresponding to the regions, where the T band and the C band are positioned, on each test strip to be detected, and calculating the ratio of the average brightness value of the T-band region to the average brightness value of the C-band region on each test strip to be detected, and acquiring the concentration of each item to be detected according to the linear relationship obtained in the step(1).Through the quantitative detection method and the quantitative detection device, not only simultaneous detection of multiple upconverting fluorescenttest strips can be achieved, but also quantitative detection can be achieved, and the detection accuracy is high.

A system includes an ultraviolet c-band radiation detector to enable detection of radiation during search and rescue operations, at least a portion of the radiation including ultraviolet c-band radiation, and a stimulus generator configured to generate a stimulus in response to detected ultraviolet c-band radiation. Further embodiments may include multiple synchronized ultraviolet c-band detectors to enhance system sensitivity and facilitate detection of relatively weak radiation sources, relatively distant sources, and/or radiation scattered about an environment.

The invention disclose a conformation method of a kind of dispersion displacement fiber (G.653) band C transmission system, the method confirms the relay transmission series of the system firstly. Then the method uses above relay series to confirm the minimal simplex wave input power and the maximal simplex wave input power of G.653 fiber amplifier, further confirms the maximal transmission distance. Finally, the method confirms proper compensation plan according to the dispersion coefficient and the simplex transmission distance of G.653 fiber. The invention also discloses a system according to above method, which can use the G.653 fiber resources fully.