Abstract: A waveguide apparatus comprises an input port having a rectangular cross-section in a plane perpendicular to a direction of propagation. The rectangular cross-section has a short side and a long side. The waveguide apparatus further comprises a plurality of resonant cavities, coupled with the input port, including a first resonant cavity and a second resonant cavity diagonally disposed with respect to each other in the plane perpendicular to the direction of propagation. Each resonant cavity has a square cross-section in the plane perpendicular to the direction of propagation. The waveguide apparatus further comprises an output port coupled with the plurality of resonant cavities on a side opposite the input port. The output port has a rectangular cross-section with a short side and a long side, wherein the short side of the output port's cross-section is perpendicular to the short side of the input port's cross-section.

Abstract: A band-pass filter for a wireless communications signal is provided. The band-pass filter includes a first element and a second element that mates with the first element to form a waveguide. The formed waveguide comprises a first linear segment and a second linear segment coupled by a first angular bend. The band-pass filter further includes an insert plate disposed between the first element and the second element along a direction of propagation of the waveguide. The direction of propagation follows the angular bend in the waveguide. In some embodiments, the band-pass filter is an E-plane filter. In some embodiments, the band-pass septum filter has a shorter length along an x-direction than a straight septum filter with the same performance.

Abstract: A batch of input/output (I/O) requests, directed to multiple physical domains of storage area network disk (SAN disk), are prioritized for processing based on the workload (pressure) of the target physical domains, and further based on the workload of multiple input/output (I/O) paths available for transmission of the I/O data to or from the physical domains. Requests directed to a physical domain with low pressure (relative to other physical domains to which some of the I/O requests are directed) are queued up and sent to the physical domain on an I/O path having a low workload (relative to other available I/O paths). Requests directed to a physical domain under relatively high pressure are queued up and sent to the physical domain on an I/O path having a relatively higher workload.

Abstract: A radio receiver component includes a first antenna line for receiving a first signal and a second antenna line for receiving a second signal. Each of the first signal and the second signal is a respective intermediate frequency (IF) signal produced by down-converting a respective radio frequency (RF) signal received by a respective antenna. The first antenna line includes a demodulator that receives the first signal and down-converts the first signal to produce one or more baseband signals, one or more variable baseband delay paths that delay the one or more baseband signals, a modulator that receives the one or more delayed baseband signals and up-converts the one or more delayed baseband signals to produce a third IF signal. The radio receiver component further includes a combiner that receives and combines the second signal and the third signal to produce a fourth signal.

Abstract: A method for biasing a power amplifier using a transmission signal having a time-varying envelope is provided. The method comprises producing a time-varying signal indicative of an amplitude of the envelope of the transmission signal and comparing the time-varying signal to a plurality of distinct threshold voltages. The method further comprises, for each of the plurality of distinct threshold voltages exceeded by the time-varying signal, providing a respective bias voltage to a respective input of a summing device and producing, using the summing device, an output bias voltage that is at least a sum of the respective bias voltages provided to the respective inputs of the summing device. The method further comprises biasing the power amplifier with the output bias voltage and amplifying the transmission signal using the power amplifier biased at the output bias voltage.

Abstract: A selection of a plurality of graphical user interface (GUI) components of a GUI is received. The selection is received so that the GUI can be tested. Attributes of the selection of GUI components are determined. Using the attributes, a default procedure for testing the GUI is determined. The default procedure includes a first set of input values for GUI components of the plurality of GUI components. The default procedure includes a first sequence in which the first set of input values are provided. Modifications to the default procedure are received. Using the modifications, a final procedure with a second set of input values provided in a sequence is generated. The GUI is tested with the final procedure. Testing the GUI includes providing the second set of input values to respective GUI components in the second sequence.

Abstract: A tunable radio frequency (RF) filter is provided. The tunable RF filter includes a first element and a second element that mates with the first element to form a waveguide. The waveguide includes a plurality of irises having band-pass characteristics. The tunable RF filter further includes a moveable dielectric plate disposed between the first element and the second element along a direction of propagation of the waveguide and a drive assembly that moves the moveable dielectric plate relative to the plurality of irises.

Abstract: An antenna coupling unit (ACU) is provided. The ACU includes a transmitter port, a receiver port, and an antenna port; a circulator isolating the transmitter port from the receiver port; a first waveguide coupling the transmitter port with the circulator. The transmitter port receives an outgoing from first external circuitry. The first waveguide includes a first filter that filters the outgoing before routing the outgoing signal to the antenna port. The ACU further includes a second waveguide coupling the circulator with the receiver port. The second waveguide includes a second filter that filters an incoming received through the antenna port before routing the incoming signal to the receiver port. The receiver port provides the filtered incoming to second external circuitry. The ACU further includes a third waveguide coupling the antenna port with the circulator. At least one of the first filter and the second filter is a tunable filter.

Abstract: A radio-frequency (RF) component includes a first portion of a waveguide configured to transmit an electro-magnetic (EM) wave. The RF component includes a waveguide coupling configured to receive the EM wave from the first portion of the waveguide and transmit the EM wave to an external RF component. The waveguide coupling includes a waveguide plate having a second portion of the first waveguide formed therein; a waveguide spacer having a third portion of the first waveguide formed therein; and a conductive spring circumferentially disposed around the first waveguide in between the waveguide plate and the waveguide spacer.

Abstract: A circulator plate for a microwave radio system is disclosed. The circulator plate includes a circulator including a first port, a second port, and a third port; a first isolator including an input port and an output port; a second isolator including an input port and an output port; and a splitter including an input port, a first output port, and a second output port. The output port of the first isolator is coupled to the first port of the circulator. The input port of the second isolator is coupled to the third port of the circulator. The input port of the splitter is coupled to the output port of the second isolator. The first output port of the splitter is configured to be coupled to a first receiver. The second output port of the splitter is configured to be coupled to a second receiver.

Abstract: A digital microwave radio system includes a splitter that splits a common baseband input into two baseband outputs, first and second transmitters, each transmitter electrically connected to a baseband output of the splitter via a mixer, a common local oscillator electrically connected to the mixer of the first transmitter and the mixer of the second transmitter via an adjustable phase shifter, respectively, and a combiner. The common local oscillator is configured to up-convert each baseband output into a radio-frequency signal using a corresponding mixer. The combiner combines the two radio-frequency signals into a 0-degree phase-shift output and a 180-degree phase-shift output, respectively. A phase error control loop adjusts the phase shifter to minimize the 180-degree phase-shift radio-frequency output. A combiner gain control loop adjusts the output power level of the two transmitters in accordance with an actual power detector reading at the 0-degree phase-shift radio-frequency output.

Abstract: A method for biasing a power amplifier using a transmission signal having a time-varying envelope is provided. The method comprises producing a time-varying signal indicative of an amplitude of the envelope of the transmission signal and comparing the time-varying signal to a plurality of distinct threshold voltages. The method further comprises, for each of the plurality of distinct threshold voltages exceeded by the time-varying signal, providing a respective bias voltage to a respective input of a summing device and producing, using the summing device, an output bias voltage that is at least a sum of the respective bias voltages provided to the respective inputs of the summing device. The method further comprises biasing the power amplifier with the output bias voltage and amplifying the transmission signal using the power amplifier biased at the output bias voltage.

Abstract: A band-pass filter for a wireless communications signal is provided. The band-pass filter includes a first element and a second element that mates with the first element to form a waveguide. The formed waveguide comprises a first linear segment and a second linear segment coupled by a first angular bend. The band-pass filter further includes an insert plate disposed between the first element and the second element along a direction of propagation of the waveguide. The direction of propagation follows the angular bend in the waveguide. In some embodiments, the band-pass filter is an E-plane filter. In some embodiments, the band-pass septum filter has a shorter length along an x-direction than a straight septum filter with the same performance.

Abstract: A batch of input/output (I/O) requests, directed to multiple physical domains of storage area network disk (SAN disk), are prioritized for processing based on the workload (pressure) of the target physical domains, and further based on the workload of multiple input/output (I/O) paths available for transmission of the I/O data to or from the physical domains. Requests directed to a physical domain with low pressure (relative to other physical domains to which some of the I/O requests are directed) are queued up and sent to the physical domain on an I/O path having a low workload (relative to other available I/O paths). Requests directed to a physical domain under relatively high pressure are queued up and sent to the physical domain on an I/O path having a relatively higher workload.

Abstract: A resistive random access memory (RRAM) structure and its forming method are provided, which includes an interlayer dielectric layer on a substrate. The interlayer dielectric layer is a dielectrics including oxygen. The RRAM structure also includes an oxygen-diffusion barrier layer on the interlayer dielectric layer, and a bottom electrode layer on the oxygen-diffusion barrier layer. The bottom electrode layer includes a first electrode layer, a first oxygen-rich layer on the first electrode layer, and a second electrode layer on the first oxygen-rich layer. The RRAM structure also includes a resistance switching layer on the bottom electrode layer, and a top electrode layer on the resistance switching layer.

Abstract: A compact antenna feeder and associated circulator plate are disclosed. The antenna feeder includes: an orthomode transducer (OMT) polarizer, a first circulator and a second circulator. The OMT -polarizer includes a septum, a first port, a second port, and a third port. The first circulator is coupled to the first port of the OMT polarizer to define one orthogonally polarized microwave signal path between the first circulator and the third port of the OMT-polarizer. The second circulator is coupled to the second port of the OMT polarizer to define another orthogonally polarized microwave signal path between the second circulator to the third port of the OMT-polarizer. The OMT polarizer includes a waveguide with the septum located therein separating the two orthogonally polarized microwave signal paths. The septum has a base mounted on the circulator plate and a step-shape body extending from the base and out of the circulator plate.

Abstract: A resistive random access memory is provided. The resistive random access memory includes a bottom electrode over a substrate, a top electrode, a resistance-switching layer, an oxygen exchange layer, and a sidewall protective layer. The top electrode is disposed over the bottom electrode. The resistance-switching layer is disposed between the bottom electrode and the top electrode. The oxygen exchange layer is disposed between the resistance-switching layer and the top electrode. The sidewall protective layer containing metal or semiconductor is disposed at sidewalls of the resistance-switching layer, and the sidewalls of the resistance-switching layer is doped with the metal or semiconductor from the sidewall protective layer.

Abstract: A method, computer program product, and system for testing an application on a GUI are provided. A request to perform a test of an application is received. The test uses a script that includes instructions to perform real actions on a GUI of the application. Execution of the script is initiated. A test recording is generated by capturing a first plurality of screenshots of the GUI during the test. In response to detecting an error during execution of the script, a baseline video is retrieved. The baseline video includes a second plurality of screenshots of the GUI from a successful execution of the script. An error message is issued. The error message includes at least a portion of the test recording and at least a portion of the baseline video.

Abstract: An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.

Abstract: A power-saving method is provided. The method is used in a device and includes: measuring, by a light sensor of the device, luminous intensity of ambient light and generating a measurement value of ambient light; determining whether the measurement value of ambient light is greater than a threshold; and controlling the device to switch between a quick-start mode and a standby mode based on a determination result indicating whether the measurement value of ambient light is greater than the threshold.