The MU1000 40B CPRI RF module with a BBU emulation option collaborates with this vendor’s Network Master Pro MT1000A multifunction field tester, geared to reduce operational expense and time associated with deploying LTE network sites. The new capability is designed to improve efficiency by providing the necessary tools to validate that a Nokia/Alcatel Lucent remote radio head is installed properly and functional before the base-band unit is commissioned. With the option installed, the Network Master Pro MT1000A is an all-in-one field test solution that can verify optical-fiber, small form-factor pluggable (SFP) modules; the RRH; and power before the BBU is officially commissioned and the site is turned on for customer service. Key measurements, such as RRH transmitter output VSWR and return loss uplink spectrum, and spectrograms can be made with the Network Master Pro with the BBU emulation option. The expanded capability is also useful for troubleshooting installed RRH that are not functioning properly. Field engineers, contractors, and technicians can read RRH manufacturer information as well as RRH SFP data to validate wavelength and line rate with the option installed on the MT1000A. Anritsu America
50-V GaN HEMT family
A family of 50-V unmatched GaN HEMT RF power devices now includes a 250-W part with a frequency range up to 3.0 GHz. The device offers high efficiency, enabling RF design engineers to use fewer components to design smaller and lighter linear amplifier circuits for commercial and military wireless communications and S-band radar applications. The new 50-V GaN HEMT devices provide a combination of high power and high gain with high-efficiency operation, making it possible for RF design engineers to replace several lower-power GaN HEMTs or multiple silicon LDMOS devices with a single device in their power-amplifier designs. Packaged in a four-leaded metal-flanged ceramic “Gemini” package, the new 250-W GaN HEMTs operate efficiently at full-rated power, reducing the need for complex thermal management systems.
Their higher power and efficiency rating, combined with a frequency range up to 3.0 GHz, makes these devices suitable for a range of RF linear and compressed amplifier circuits, including those for military communications systems, radar equipment (UHF, L-band, and S-band), and electronic warfare (EW) systems, as well as RF applications in the industrial, medical, and scientific (ISM) band. The CGHV40200PP is a 50-V unmatched GaN HEMT device rated for 250-W, 3.0-GHz operation with 67% efficiency (at PSAT) and 21-dB small-signal gain at 1.8 GHz. Wolfspeed
25A step-down regulator
The LTM4645, a 25-A step-down (power module) regulator has the ability to current-share multiple independent devices (N) where at least one LTM4645 is used as a backup (+1) to ensure power availability if one device in this N+1 arrangement detects a fault and must be disconnected. Applications benefiting from the N+1 redundancy feature include data centers, aerospace, banking transactions, and cloud-based systems where improved system safety and integrity are top priority. The LTM4645 operates from a 4.7-V to 15-V input supply and regulates an output voltage adjustable from 0.6 V to 1.8 V. Synchronous step-down operation delivers 25 A at 1 V from 12 VIN with 86% efficiency, 3.5-W power loss, and 41°C rise (no airflow, no heat sink). The device is offered in a 9-mm x 15-mm x 3.51-mm BGA package and includes the inductor, MOSFETs, and DC/DC regulator IC. With a differential remote sense amplifier to compensate for voltage droop caused by PCB trace resistance and tested electrical parameters from -40°C to 125°C, the output voltage total DC accuracy is guaranteed at ±1.2%. The LTM4645 has several safety functions such as output overvoltage protection, output overcurrent protection, and an onboard temperature monitoring diode.
The propagation delay from time of failure device turn-off is less than 200 ns. The LTM4645 is rated for operation from –40°C to 125°C. Up to six devices can current share for 150 A of load current. Power loss is only 3.5 W for 12-V input to 1-V output at 25-A load. Analog Devices Inc.
Extended-rail transformers
The MID-OLRM extended-rail RM8 transformer series for offline applications are available with single or dual 5-V or 12-V outputs. These flyback transformers are built with grounded cores for improved EMI performance, small footprint, and reinforced insulation. The 7508112110, 7508112349, 750811618, and 7508116316 transformers are best-suited for white goods, industrial controls, metering, LED lighting, offline flyback power supplies, space-constrained power supplies, and smart adapter applications. Adding an extended rail to the exiting RM package eliminates the need for flying leads. This package also meets the IEC 61558-2-16 standard with reinforced insulation. Würth Elektronik eiSos
This agile vector adapter extends the capabilities of the UXG X-Series agile signal generators to generate complex pulsed signals and waveforms based on I/Q data for more realistic electronic-warfare threat simulations. The vendor says the N5194A UXG X-Series agile vector adapter enables the industry’s highest-fidelity agile threat simulations when used with its commercial off-the-shelf (COTS) UXG X-Series agile signal generators for aerospace and defense applications. The N5194A operates throughout the 50-MHz to 20-GHz band. This makes it possible to generate complex pulsed signals with variable rise and fall times, nonlinear chirps, and advanced modulation coding schemes with signal purity of typically –70 dBc in the X-band. To mimic antenna scan patterns and angle-of-arrival scenarios, the adapter includes a built-in solid-state attenuator and provides 120 dB of agile amplitude range. Engineers can add commercial communications signals for even greater realism. The N5194A receives its local oscillator and reference signals from the N5193A UXG X-Series agile signal generator. This architecture provides agile switching and phase coherence as well as frequency, amplitude, and phase-switching times of 170 ns with phase repeatability at all frequencies. Keysight Technologies
This next-generation APx Bluetooth Duo module incorporates all of the capabilities and features of its predecessor, while delivering a wider selection of A2PD codecs, faster pair and connection times, an increased feature set within APx500 measurement software, and improved RF shielding for use in production test environments. APx Bluetooth Duo incorporates the audio features mandated within the Bluetooth 4.2 core specification and supports the Handsfree Profile (HFP v1.7), Headset Profile (HSP v1.2), Audio-Video Remote Control Profile (AVRCP v1.4), and Advanced Audio Distribution Profile (A2DP v1.3). With dedicated source and sink radios, the Duo module easily switches between the roles of A2DP source and sink (including AAC), HFP/HSP audio gateway and handsfree, and AVRCP target and controller. The introduction of the Duo module expands the list of A2DP condecs available to Bluetooth-equipped APx Series audio analyzers to AAC, aptX, aptX-HD, aptX-LL, and SBC.
APx Bluetooth Duo can act as either source or sink for each of the supported A2DP codecs. As an APx module, Bluetooth Duo is part of an integrated audio test solution, leveraging the power and flexibility of the APx system. It can share analog, digital, and chip-level12S and TDM protocols, as well as PDM or HDMI interface capabilities installed in an APx555, APx52x, or AP58x Series analyzer. Intuitive APx500 measurement software provides access to a long list of Bluetooth settings and parameters, while allowing easy automation of connection, pairing, and settings commands in a stepped sequence for production test applications.
Audio Precision
AMBER PI, a plug-on board for the Raspberry Pi 3B, allows developers to realize applications for wireless connection in the sub-GHz band. Besides the power-saving sub-GHz wireless interface, the board is equipped with integrated sensors for temperature, humidity, air pressure, and movement. Several components for typical applications of this wireless module are available, which can be effected quickly and conveniently with an AMBER PI driver. The wireless stick provided serves as a remote wireless station. In conjunction with the possibilities of the Raspberry Pi, such as a monitor connection as well as USB, WLAN, and Bluetooth port, the AMBER PI represents a convenient evaluation board for the power-saving proprietary wireless solution – AMB8826. The 868-MHz module has a range of 2,000 meters. The driver available as C code enables individual applications to be realized quickly on the basis of the wireless module and the sensors of the board. Typical applications include remote surveillance and remote control and the use of serial cable connections or sensor networks in industrial automation. Because of the low energy requirement of the AMB8826, battery-operated devices can also be equipped with this wireless module. The wireless stick provided makes a remote wireless station out of any PC. AMBER wireless GmbH