摘要:
A design structure embodied in a machine readable medium used in a design process can include apparatus of a semiconductor chip operable to detect an increase in resistance of a monitored element of the semiconductor chip. The design structure can include, for example, a resistive voltage divider circuit operable to output a plurality of reference voltages having different values. A plurality of comparators in the semiconductor chip may be coupled to receive the reference voltages and a monitored voltage representative of a resistance of the monitored element. Each of the comparators may produce an output indicating whether the monitored voltage exceeds the reference voltages, so that the resistance value of the monitored element may be precisely determined.
摘要:
Adjusting a calibrated phased array includes receiving conditions data describing conditions at a phased array. The phased array comprises antenna element sets, where an antenna element set comprises antenna elements and is associated with a calibration value. The following is performed for each antenna element set. A temperature value is established for an antenna element set according to the conditions data. A temperature-dependent correction value corresponding to the temperature value is established. A correction value is determined for the antenna element set according to the temperature-dependent correction value and the calibration value associated with the each antenna element set. At least one antenna element of the antenna element set is adjusted according to the correction value.
摘要:
Adjusting a calibrated phased array includes receiving conditions data describing conditions at a phased array. The phased array comprises antenna element sets, where an antenna element set comprises antenna elements and is associated with a calibration value. The following is performed for each antenna element set. A temperature value is established for an antenna element set according to the conditions data. A temperature-dependent correction value corresponding to the temperature value is established. A correction value is determined for the antenna element set according to the temperature-dependent correction value and the calibration value associated with the each antenna element set. At least one antenna element of the antenna element set is adjusted according to the correction value.
摘要:
Digital testing of an analog driver circuit is enabled using a circuit including a control circuit for generating signals, a differential driver circuit for receiving a differential input signal, amplifying the differential input signal and transmitting a differential output signal, a programmable termination impedance circuit for generating a differential termination impedance at the output node of the differential driver circuit, and a differential receiver circuit for converting the differential output signal to a single ended signal and transmitting the single ended signal. The testing includes skewing a differential output termination impedance, adjusting a differential receiver circuit voltage offset, selecting a differential driver circuit power level, enabling a decoder which activates only one differential driver circuit segment per test sequence, activating a segment, stimulating the differential driver circuit with digital test patterns, receiving differential driver circuit output, converting the output to a single-ended signal, and observing the single-ended signal.
摘要:
In one embodiment, a polarization control system for an antenna array comprises a number of first and second antenna elements and a beam forming network. The first antenna elements have a direction of polarization that is different from a direction of polarization of the second antenna elements. The beam forming network, which is coupled to the first and second antenna elements, is operable to provide a second signal to a first subset of the plurality of first antenna elements that is different from a first signal that is provided to the other first antenna elements and provide a third signal to a second subset of the second antenna elements that is different from the first signal that is provided to the other second antenna elements.
摘要:
According to an embodiment of the present invention, a multi-function carrier structure for a phased array radar includes a substrate that includes a mounting surface for a plurality of transmit/receive modules, a plurality of radiating elements integrally formed in the substrate adjacent the mounting surface, and a plurality of cooling channels integrally formed within a thickness of the substrate. The substrate is formed from a material having a coefficient of thermal expansion similar to respective substrates of the transmit/receive modules.
摘要:
An apparatus and method for providing standby power to a node of a distributed system of devices. The apparatus includes: a current manager operable to manage supply of current to a device at the node; a normal current supplier operable to supply normal operating current to the device; and a super capacitor at the node operable to supply standby operating current to the device under control of the current manager when the normal current supplier fails to supply the normal operating current to the device. The apparatus preferably further comprises a switching regulator, operable in electrical communication with the super capacitor and the device, to regulate the standby operating current to the device.
摘要:
Systems for making impedance adjustments that will auto-tune a communication path is disclosed. The method can utilize time domain reflectometry (TDR) to acquire data about impedance mismatches and can adjust the termination impedances based on the acquired data. A system is also disclosed that has an isolator to decouple a first adjustable resistor from a transmission path in a first mode and couple the first adjustable resistor to the path in a second mode. The system can have a test transmitter to create a first current on the path in the first mode and to create a second current having twice the current in a second mode, wherein a detector can detect a first voltage during the first mode and a second voltage in the second mode as the first adjustable resistive load is adjusted in the second mode until it reaches a value matching the first voltage detected in the first mode.
摘要:
A machine-readable medium thereupon stored a design structure; the design structure includes a receiver for a data communications system. The receiver includes a data path for receiving a data signal from a data channel, the data path comprising an automatic gain control (AGC) loop; and, a signal detector for generating a data valid signal indicative of the validity of the data signal in response to detection of the data signal on the channel exceeding a threshold and in dependence upon gain information from the AGC loop in the data path.
摘要:
In certain embodiments, a structure for electronic components includes a baseplate having a substantially planar shape. The baseplate defines one or more openings allowing air flow. The structure includes a frame coupled to the baseplate. The frame includes a planar support with a substantially planar shape that is substantially parallel to the baseplate. Then planar support and baseplate at least partially defines one or more plenums. The planar support is also configured to support one or more transmit/receive integrated microwave modules. The frame also includes a plurality of frame supports that define one or more channels for air flow. Each channel corresponds to one of the plenums. Additionally, the frame includes a ventilated panel with a surface defining a plurality of air inlets. The air inlets allow air into one of the one or more plenums. Also, the frame includes one or more thermal interfaces configured to dissipate heat.