Abstract: A filtering power divider includes a first partial transmission line having a first electrical length, a second partial transmission line having a second electrical length, and a third partial transmission line having the second electrical length. The first, second, and third partial transmission lines connect to form a T-junction, and a sum of the first and second electrical lengths is ninety degrees. Thus, the first and second partial transmission lines cooperate to act as a quarter-wave transmission line. Similarly, the first and third partial transmission lines cooperate to act as a quarter-wave transmission line. Additional transmission lines may be connected to the first, second, and third partial transmission lines to implement a filter between an input port and each of two output ports.

Abstract: A directional coupler 1 includes: a first waveguide 31 and a second waveguide 32 that are arranged in parallel with post arrays 23 and 24 therebetween; a coupling window 33 that is formed in the post arrays 23 and 24 and electromagnetically couples the first waveguide 31 and the second waveguide 32; and a projecting conductor 50 that projects, at a center in a width direction of the coupling window 33, from one conductive layer 13 of paired conductive layers 12 and 13 facing each other in the first waveguide 31 and the second waveguide 32, toward an inside of the coupling window 33, the projecting conductor 50 being spaced from the other conductive layer 12.

Abstract: A cavity filter includes a cavity, a cover plate, a tuning component, and a resonant column. The cover plate is connected to the cavity, and the cover plate is configured to cover the cavity to form a resonant cavity. A through hole is provided on the cover plate, and the tuning component passes through the through hole and is fastened on the cover plate. The tuning part includes a high-conductivity part and a non-conductivity part, the high-conductivity part is located in the cavity, and the resonant column is in the cavity.

Abstract: An electronic device includes an electromagnetic interference shield having a layer of conductive material covering at least a portion of the electronic device and having a skin depth of less than 2 ?m for electromagnetic signals having frequencies in a kilohertz range.

Abstract: A full band waveguide orthomode transducer (OMT) includes first, second, and third waveguide sections coupled to one another, the first, second, and third waveguide sections respectively having a first port, a second port, and a third port. A first wire grid polarizer in the first waveguide section is transparent to electromagnetic signals having a first polarization and reflective of electromagnetic signals having a second polarization orthogonal to the first polarization. A second wire grid polarizer in the second waveguide section is transparent to electromagnetic signals having the second polarization and reflective of electromagnetic signals having the first polarization. The third waveguide section is configured to transmit and/or receive electromagnetic signals having the first polarization and/or the second polarization.

Abstract: A device for concentrating an electromagnetic wave includes a waveguide array that includes a central waveguide having a first refractive index and a central axis and feeder waveguides disposed around the central waveguide. Each feeder waveguide has a second refractive index. The waveguide array also includes a support structure coupled to the waveguide arrays and configured to, in a deployed configuration, retain the feeder waveguides of the waveguide array in a substantially symmetric arrangement with respect to the central waveguide to enable concentration of an electromagnetic wave of a particular wavelength in the central waveguide via electromagnetic coupling of the central waveguide with each of the feeder waveguides, with the respective axis of each feeder waveguide oriented substantially parallel to the central axis of the central waveguide and with each feeder waveguide spaced apart from the central waveguide by a distance that is based on the particular wavelength.

Abstract: A branchline coupler structure having a pair of main transmission lines disposed on different horizontal levels of a support structure and a pair of shunt transmission lines, vertically disposed and laterally spaced, and disposed in the support structure. A first one of the pair of shunt transmission lines is coupled between: one region of a first one of the pair of main transmission lines and a first end of a second one of the pair of main transmission line. A second one of the pair of shunt transmission lines is coupled between a second region of the first one of the pair of main transmission lines, laterally spaced from the first region, and a second end of the second one of the main transmission lines.

Abstract: Three-way divider includes first transmission line, second transmission line, and third transmission line. First transmission line includes first input-side line and first output-side line, which are connected at first connection point. Second transmission line includes second input-side line and second output-side line, which are connected at second connection point. Third transmission line includes third input-side line and third output-side line, which are connected at third connection point. Each of first transmission line, second transmission line, and third transmission line has an electrical length that is ¼ a wavelength of a second frequency. The first connection point and the second connection point, the third connection point and the second connection point, the first output terminal and the second output terminal, and the third output terminal and the second output terminal are respectively connected via corresponding resistors.

Abstract: The invention discloses a LTCC wide stopband filtering balun based on discriminating coupling. The filtering balun includes a dielectric, and a first resonator, a second resonator, a first feeding line, a second feeding line, a third feeding line and a metal ground which are arranged inside the dielectric. The two resonators are both half-wavelength resonators distributed on different layers, and the layers are connected through metal through holes. the first feeding line is coupled with a specific area of the first resonator for performing feeding to suppress a second harmonic, and the second feeding line and the third feeding line are coupled with a specific area of the second resonator for performing feeding to suppress a third harmonic, thus realizing a wide stopband filtering performance. The second feeding line and the third feeding line are symmetrically arranged about a center of the second resonator, thus realizing a same-amplitude reverse-phase balun output characteristic.

Abstract: In embodiments, an apparatus includes a beamformer including a plurality of inputs and a plurality of outputs, a plurality of input vias, and a plurality of output vias. Each input of the plurality of inputs electrically couples to a respective input via of the plurality of input vias. Each output of the plurality of outputs electrically couples to a respective output via of the plurality of output vias. The beamformer is included in a first layer, wherein the plurality of input vias are configured to electrically couple to termination trace ends of a plurality of hierarchical networks provided on at least second and third layers, and wherein the plurality of hierarchical networks comprises at least three hierarchical networks.

Abstract: RF and microwave radiation directing or controlling components are provided that may be monolithic, that may be formed from a plurality of electrodeposition operations and/or from a plurality of deposited layers of material, that may include switches, inductors, antennae, transmission lines, filters, hybrid couplers, antenna arrays and/or other active or passive components. Components may include non-radiation-entry and non-radiation-exit channels that are useful in separating sacrificial materials from structural materials. Preferred formation processes use electrochemical fabrication techniques (e.g. including selective depositions, bulk depositions, etching operations and planarization operations) and post-deposition processes (e.g. selective etching operations and/or back filling operations).

Abstract: Apparatuses, methods of assembling a resonator, and methods of tuning a resonator are provided. An example apparatus may include at least one resonator comprising a resonator hole defined within the resonator and defining an inner wall of the at least one resonator, a tuning cover comprising at least one hollow rod, and a tuning element comprising a bottom flanged portion. The tuning element may be configured to be inserted into the at least one hollow rod and the bottom flanged portion is configured to cover at least a bottom portion of the hollow rod. The bottom flanged portion of the tuning element is configured to be positioned between the at least one hollow rod and the inner wall of the at least one resonator.

Abstract: A tunable bandpass filter (1A) includes a waveguide (11); a plurality of resonators (12) housed in the waveguide (11) and arranged in the lengthwise direction of the waveguide (11); a coupling member (13) disposed between two adjacent resonators (12); a ridge member (14) extending in the lengthwise direction of the waveguide (11) and connected to one end of the coupling member (13); and a dielectric plate (17) extending in the lengthwise direction of the waveguide (11), disposed adjacent to the plurality of resonators (12) in a direction orthogonal to the lengthwise direction of the waveguide (11), and movable in the direction orthogonal to the lengthwise direction of the waveguide (11).

Abstract: Systems and methods for beamforming based on mixing elements together instead of conventional phase shifting are provided. A beamformer can be used to cross-mix the elements with one another to compensate for delays in signal reception. By replacing phase shifters with mixers, the system becomes agnostic to frequency of operation and angle of arrival.

Abstract: A combiner-divider includes a first impedance converter disposed between the first port and the second port, a second impedance converter disposed between the first port and the third port, and an isolation unit disposed between the second port and the third port. The isolation unit includes a balun formed of a first semi-rigid cable and a second semi-rigid cable, and terminating resistors. Each line length of the first impedance converter, the second impedance converter, and the third impedance converter corresponds to ¼ wavelength at a center frequency. A relationship of each impedance Ri of the second port and the third port, an impedance Ro of the first port, and each impedance W of the first impedance converter and the second impedance converters is expressed by W=(2×Ri×Ro)1/2.

Abstract: An apparatus may include a substrate assembly having a first side and a second side. The apparatus may further include a waveguide antenna element positioned on the first side of the substrate assembly. The apparatus may also include a microstrip line positioned within the substrate assembly, where the waveguide antenna element overlaps the microstrip line. The apparatus may include a first conductive plane positioned on the first side of the substrate assembly. The apparatus may further include a second conductive plane positioned on the second side of the substrate assembly. The first conductive plane and the second conductive plane may define at least a portion of a planar surface integrated waveguide or a planar stripline.

Abstract: A cavity-type radio frequency filter is disclosed. the radio frequency filter having a cavity structure including an enclosure, a resonant element, a cover, a frequency tuning screw, and a resilient fixing member. The enclosure has a hollow inside and an open surface on one side to have a cavity. The resonant element is positioned in the hollow of the enclosure. The cover has a screw hole having a preset diameter at a position corresponding to the resonant element, and is configured to seal the open surface of the enclosure. The frequency tuning screw is configured to be screwed into the screw hole of the cover, and it has an upper end formed at least partially with a latching abutment that protrudes outwardly.

Abstract: A tunable filter for adjustable filtering between a minimum frequency and a maximum frequency includes a transmission line designed to transmit a signal and having longitudinal axis. The tunable filter further includes a two-dimensional capacitor array including step-tunable capacitors located along the transmission line, a first dimension of the two-dimensional capacitor array being along the longitudinal axis and a second dimension of the two-dimensional capacitor array being located perpendicular to the longitudinal axis. The tunable filter further includes a controller coupled to each of the step-tunable capacitors and designed to control each of the step-tunable capacitors independently to be in a biased mode or in an unbiased mode based on a desired frequency response of the tunable filter.

Abstract: An electronic device includes a signal processor, a substrate, and a conductive housing. The signal processor includes an oscillator that outputs oscillation signal. The substrate has a ground component, the signal processor being disposed on the substrate. The conductive housing is connected to a first site of the ground component and to a second site that is different from the first site. The first site and the second site are disposed at positions where a first area of the housing that is an odd-numbered multiple of ¼ wavelength of the oscillation signal away from the first site overlaps at least part of a second area of the housing that is a multiple of ¼ wavelength of the oscillation signal away from the second site.

Abstract: The disclosure relates to a wideband, tunable hybrid-based combiner for a Doherty power amplifier architecture. The architecture includes two parallel power amplifiers: a carrier amplifier and a peaking amplifier. The peaking amplifier modulates the load seen by the carrier amplifier, allowing the carrier amplifier to remain in high-efficiency, saturated operation even at back-off. This load modulation can be achieved using impedance matching networks having an impedance matched to a specific frequency. Typically, a multi-mode/multi-band power amplifier module that does not include a tunable impedance circuit as disclosed herein, several Doherty power amplifier modules (each of which uses two amplifiers) would be used to cover several bands, which may make implementation costly and/or impractical. Thus, the architectures described herein provide wideband amplification using a Doherty amplifier configuration.