Microwave Engineering Europe - September 2008 - (Page 34)

34 PRODUCTS High-power bipolar transistors for pulsed avionics applications Tyco Electronics M/A-COM has announced a line-up of three high-power bipolar transistors designed for pulsed avionics and radar applications, ranging from 960 MHz to 1215 MHz. The MAPRST0912-50, MAPRST0912-350 and MAPR-000912-500S00 transistors are ideally suited for pulsed avionics applications such as air traffic control (ATC) systems, distance measurement equipment (DME) and identification friend or foe (IFF) systems. The new devices are assembled in a hermetic, ceramic/metal package for high reliability and are optimized for Tactical Air Navigation or similar short pulse formats. Additionally, the transistors are characterized at 960, 1090 and 1215 MHz to ensure optimal performance across the entire avionics frequency spectrum. The MAPRST0912-50 is a 50 W-peak Class C, silicon bipolar pulse power transistor designed specifically for driver stages in pulse power amplifier High-gain GPS LNA features an integrated FBAR filter Avago Technologies has introduced its nextgeneration, high-gain GPS low noise amplifier (LNA) with integrated filter. Touted as the first high-gain GPS LNA with an integrated high rejection FBAR filter, the ALM-1612 LNA/filter module is designed for the 1.575-GHz band, targeting GPS handset, recreational, in-vehicle navigation and antenna markets. Under typical operating conditions of 2.7 V and 6 mA, the LNA/filter claims exceptional performance, such as a 0.9 dB noise figure, 18 dB gain, +2 dBm input third order intercept point and more than 65 dBc of cell/PCSband rejection. In a 3.3 x 2.1 x 1.0-mm miniature MCOB package, the ALM-1612 is integrated with the company’s FBAR filter for superior rejection at cell/ PCS band frequencies, which is particularly critical for simultaneous GPS operation in handsets and other mobile applications, according Avago. The ALM-1612 provides a CMOS-compatible shutdown pin to turn the LNA on/off or to adjust the variable current. A built-in shunt indicator at the RF input pin of the LNA enhances its ESD protection. Leveraging the company’s 0.25-micron enhancementmode pHEMT fabrication technology, the LNA/filter module can also operate at low voltages of 1.8 V and still achieve very low noise figures and high gain, making it suitable for use in low-power GPS applications. www.mwee.com/210300474 applications over the 960 to 1215 MHz bandwidth. It is designed to have a minimum gain of 9.0 dB with 40 percent minimum collector efficiency (greater than 45 percent typical) on a 50-VDC supply. The MAPRST0912-350 is similar to the MAPRST091250, and is rated at 350 W-peak with 40 W drive, and is ideal for intermediate amplifier stages. It features a minimum gain of 9.4 dB with 45 percent minimum collector efficiency (greater than 50 percent typical) on a 50-VDC supply. The MAPR-000912-500S00 is rated at 500 W-peak and is ideal for amplifier final stages. It features a minimum gain of 9 dB with 45 percent minimum collector efficiency using a 50-V supply. www.mwee.com/210500130 Coaxial resonator VCO exhibits extremely low phase noise Ideal for applications that require low phase noise such as in satellite communication, the ZRO0743B2LF from Z-Communications is a coaxial resonator based VCO in the UHF-band, that is RoHS compliant. The ﬁrst in a new series of products under development by the company, the VCO operates from 738 to 748 MHz with a tuning voltage range of 0 to 6 Vdc. This VCO features an excellent typical phase noise of -131 dBc/Hz at 10 KHz offset and a typical tuning sensitivity of 2 MHz/V. The coaxial resonator VCO is designed to deliver a typical output power of 9 dBm at 8 Vdc supply while drawing 23 mA (typical) over the temperature range of -40 to 85 degrees Celsius. The device has a typical phase noise value of 8x8 MEMS switch matrix over 100 billion cycles, low power and small size Renaissance Electronics is showcasing their latest 18A7NF-1 8x8 MEMS switch matrix. Smaller than standard electromechanical switches, micro-electromechanical (MEMS) switches are rated at up to 100 billion cycles, have high cut-off frequencies, wide bandwidth operation, high linearity and very low power requirement. The company now offers MEMS switches and switch matrices up to 3 GHz. The ﬁrst offering is an 8x8 MEMS switch matrix (REC Part Number 18A7NF-1) which is ideal for telecommunications, testing and military and aerospace applications. This state of the art product incorporates 80 SPDT embedded MEMS switches in a small footprint measuring 19.94- x 18.87- x 7.11-cm (7.85- x 7.43- x 2.8inches) with a life expectancy of greater than 100 billion cycles. Key characteristics include a DC to 2.5 GHz frequency range, insertion loss of 6 dB, isolation of 40 dB, VSWR of 14:1 and a switching speed of under 50 µs. www.mwee.com/210500141 -104 dBc/Hz at 1 KHz offset and -151 dBc/Hz at 100 KHz offset. Typical 2nd harmonic suppression is -20 dBc. The VCO comes in the company’s newly developed ZMX-14-SM package, which merasures 19- x 19x 5.6-mm (0.75- x 0.75- x 0.22-inches). It is available in tape and reel packaging for production requirements and is compatible with automated surface mount assembly and reﬂow assembly processes. www.mwee.com/210500147 Microwave Engineering Europe ● Septemeber 2008 ● www.mwee.com 034_MWEE.indd 34 5/09/08 11:10:52 http://www.mwee.com/210300474 http://www.mwee.com/210500130 http://www.mwee.com/210500141 http://www.mwee.com/210500147 http://www.mwee.com

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Microwave Engineering Europe - September 2008 News Contents Comment Cover Feature: Uncovering Test and Measurement’s Role in Advancing LTE and Mobile WiMAX WiMax: WiMax and LTE Need to Address Issues of Backhaul, Cost and Efficiency for Successful Deployment WiMax: Manufacturing Communications Technology Products in India Test and Measurement Mobile Platforms Evolve to Meet Future Demands Products Calendar

Microwave Engineering Europe - September 2008

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