Bipolar power transistors
The PH1090-700B from M/A-Com is an NPN common base Class C pulse power transistor designed for IFF and other avionics applications in the frequency band of 1030 MHz to 1090 MHz. Saturated output power exceeds 700 Wpk at 32 µs pulse width and 2% duty cycle. Guaranteed gain is 7.5 dB at 50% collector efficiency, and under rigorous Modes-S pulse burst conditions, the device delivers more than 450 Wpk saturated output power with 55% collector efficiency.
The silicon bipolar line-up consisting of the MAPRST0002 and the PH1214-300M deliver typical gain of 18 dB at 150 µs pulse width and 10% duty cycle. The saturated power output typically exceeds 360 Wpk, and guaranteed collector efficiency for each device is 50%, with typical values in the high 50s to low 60s. The line up was designed to support ATC pulsed radar applications in the 1200 MHz to 1400 MHz frequency band.
The silicon bipolars consisting of the MAPRST1214-06UF, MAPRST1214-30UF and MAPRST1214-150UF were designed for ultralong pulse radar applications in the 1200 MHz to 1400 MHz bandwidth. They provide 150 Wpk. This line-up delivers a minimum 24 dB gain with minimum collector efficiencies of 45% for the 150 UF and 30 UF (typical >50%) and 40% for the 6 UF. Devices are rated for operation up to 6 mS pulse width and 25% duty cycle and are assembled in hermetic ceramic/metal packages for ultralow thermal resistance.
Band reject filter
Lorch Microwave's 5BRX-2441/X78-SR is a hybrid band reject filter with bidirectional inputs. The filter features a 3 dB bandwidth of 220 MHz. The notch depth is 45 dB from 2402 MHz to 2480 MHz. The VSWR is 2.0:1 from dc to 3500 MHz, excluding the notch area. The physical size is 1.5 × 0.80 × 0.50, excluding SMA female removable connectors.
Tektronix is offering an electronic technical brief that highlights the principles of GSM protection and the evolution to UMTS security.
In a digital mobile network, the subscriber is exposed to several basic attacks and needs to be protected against them — eavesdropping, unauthorized identification, unauthorized usage of services, offending the data integrity and observation. The brief contains details of the UMTS security architecture, followed by a short abstract about protocol testing when ciphering is active.
Aries Electronics Inc. has published an eighth edition shortform catalog covering a range of interconnection and packaging products.
The 12-page catalog includes the first side-stackable BGA socket available on the market. Designated the pin-ball socket, this device can be soldered side by side, directly to the existing footprint of a PC board, improving packaging density. The socket incorporates Aries' spring probe technology.
Also detailed are Aries' Correct-A-Chip technology and products that enable designers to convert virtually any package type or footprint to any other. Typical Correct-A-Chip products include DIP-to-PLCC adapters, standard DIP adapters, DIP-to-SOIC adapters, SMD-to-DIP adapters, PGA adapters, and countless other “from-to” configurations while enabling designers to upgrade without board redesign or rework.
Also included in the catalog are data and product information on Aries' high-frequency RF test sockets, which use the company's patented Microstrip Contact System. Aries' line of BGA products for chip scale packaging is also covered in the catalog, as are LGA sockets, test and burn-in sockets, display sockets, cable jumper assemblies, DIP/SIP sockets and headers, programming devices and other socket packages.
Aries Electronics Inc.
Test and Measurement
Acqiris has introduced two intelligent VXI carriers that provide a transparent interface between the PXI/CompactPCI digitizers and VXIbus via an onboard PowerPC processor with firmware. The single-width, C-size IX200 and IX202 intelligent VXI carriers allow the full range of Acqiris PXI and CompactPCI modules, previously used only in PXI and CompactPCI systems, to be directly inserted into a VXI system, a well-accepted platform in automated test equipment (ATE) and defense/aerospace functional test applications.
The ability to replace discontinued VXI waveform analyzer and oscilloscope modules in existing ATE systems by interfacing PXI/CompactPCI components to VXI provides users with an increased return on investment as well as a significantly improved life cycle for high-speed acquisition and mixed signal test application systems. The IX200, which accepts one 6U PXI/CompactPCI module, can be used with any of Acqiris' three new V-Class high-speed digitizers, the DC271A, DC241A, and DC211A, which now offer switchable 50 Ω/1 MΩ input impedance. The DC271A features four channels, each of which can synchronously acquire signals at rates of up to 1 GS/s. The DC241A offers two channels, each with up to 2 GS/s sampling, and the single-channel DC211A provides 4 GS/S sampling. Using channel interleaving, the DC271A and DC241A achieve the same 4 GS/s single-channel performance offered by the DC211A. The modules combine their sampling rates with a 1 GHz bandwidth at 50 Ω, and 300 MHz at 1 MΩ input impedance. The DC271A, DC241A, and DC211A include 128 kpoints, 256 kpoints, and 512 kpoints of acquisition memory respectively, and are optionally upgradable to up to 8 Mpoints, 16 Mpoints, and 32 Mpoints. The IX202 has two adaptor slots that accept 3U PXI/CompactPCI modules. The lower slot is dedicated to an Acqiris product such as the DC140 dual-channel 1 GHz high-speed PXI digitizer, acquiring data at up to 2 GSps.
Pricing for the IX200 and IX202 intelligent PXI/CompactPCI carriers starts at $4990. Delivery is 10 weeks ARO. Pricing for the DC271A, DC241A and DC211A V-Class high-speed digitizers starts at $9990. Delivery is six weeks ARO.
Time and Frequency
GaAs voltage-controlled oscillator
Mimix Broadband Inc. has introduced a gallium arsenide (GaAs) hetero-bipolar transistor (HBT) monolithic microwave integrated circuit (MMIC) voltage-controlled feedback oscillator (VCO), which uses an on-chip filter to provide the necessary oscillation conditions. The circuit consists of a linear Lange- coupled phase-shifter, a Lange-coupled quadrature generator, a differential amplifier, a four-quadrant I/Q modulator, and an output buffer differential amplifier. This device also contains a frequency divider (divide-by-four) for phase-locking and an output buffer amplifier. From 5.5 GHz to 8.4 GHz, this VCO achieves +4 dBm fundamental output power and +1 dBm divide-by-four output power.
This VCO, identified as 9OSC0315, is suited for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS), and SATCOM. This VCO technology has been issued a patent in the United States, Europe and Japan.
Mimix performs 100% on-wafer dc and output power testing on the 9OSC0315, as well as 100% visual inspection to MIL-STD-883 method 2010. The chip also has surface passivation to protect and provide a rugged part with backside via holes and gold metallization to allow either a conductive epoxy or eutectic solder die attach process.
Engineering samples are available from stock, and production quantities are available six to eight weeks ARO.
Mimix Broadband Inc.
5 GHz VCOs
Crystek Crystals Corporation has expanded its line of high-performance voltage-controlled oscillators (VCOs) with a new 5 GHz model in a 0.5 inch x 0.5 inch standard SMD package. The CVCO55BH-5256-5356 VCO generates a frequency range of 5256 MHz to 5356 MHz with a tuning voltage range of 1 VDC to 4 VDC.
The VCO has a low phase noise performance of -86 dBc/Hz at 10 kHz offset typical and excellent linearity throughout its tuning range. The model CVCO55BH-5256-5356 exhibits an output power of 0±2.0 dBm into a 50 Ω load with a supply of +5 Vdc and a typical current consumption of 25 mA. Pushing and pulling are minimized to 5 MHz/V and 4 MHz, respectively. Second harmonic suppression is -10 dBc typical.
Crystek Crystals Corp.
Digitally tuned VCXOs
Cardinal Components Inc. has introduced a digitally tuned VCXO (CDVP). The CDVP offers higher available frequencies (1 MHz to 200 MHz), greatly reduced sample and production lead-times and a device that can aid in system tolerancing.
The digitally tuned CDVP series is available in a 9.6 mm × 11.4 mm surface-mount package and operates from a 3.3 V power supply. Available with factory-programmed center frequencies from 1 MHz to 200 MHz, it can be tuned over a -70 ppm to +120 ppm range. The CDVP maintains a ±50 ppm stability over an operating temperature of -40° C to +85° C. Frequency tuning changes are accomplished via a single write over the devices I2C interface. The CDVP allows the user to implement PLL systems 100% digitally, eliminating the need for analog and interface circuitry.