Microwave Engineering Europe - May 2008 - (Page 39)

PRODUCTS 39 1GHz SAW clock oscillator low noise, low jitter performance Crystek Crystals has released a 1 GHz SAW Clock Oscillator (CCSO), which is based on FR5 PCB and SAW (surface acoustic wave) crystal technology to provide a low noise, low jitter performance with true SineWave output. The oscillator features -142 dBc/Hz phase noise at 10 KHz offset. Model number CCSO914X3-1000 comes in a 9- x 14-mm SMT package. It uses a +3.3 V supply and generates a true-sinewave with +5 dBm minimum output power. The oscillator has no subharmonics, and the second harmonic is -25 dBc typical. Power amplifier targets CDMA handsets significantly reduced average current consumption ANADIGICS has introduced the AWT6309 linear power amplifier (PA) designed specifically for use in CDMA wireless handsets and data devices that operate in the 1.7-GHz band. The PA is designed to be compatible with Qualcomm CDMA2000 and EVDO chipsets. The AWT6309, the latest addition to the HighEfficiency-at-Low-Power (HELP) CDMA power amplifier family, reduces average current consumption by as much as 50 percent, compared to conventional two-stage amplifiers, according to the company, due to a proprietary design and unique InGaP-Plus technology. Housed in a 3- x 3- x 1.0-mm package, the AWT6309 offers a low quiescent current of 14 mA and low leakage current in shutdown mode of <1 µA. The PA also integrates an internal voltage regulator that eliminates the need for external voltage regulators. The PA touts high efficiency: 41 percent at +28 dBm output and 22 percent at +27 dBm output. www.mwee.com/207100264 The CCSO-914X3-1000 operates from -40 to +85 degrees Celsius. Applications include system clock for network clock generator/synchronizer, clock for DDS, test and measurement, avionics, point-to-point radios, and multi-point radios. www.mwee.com/207400826 Antenna coupler eases TETRA radio testing renders individual RF adapters unnecessary The ﬁrst antenna coupler for TETRA frequencies from Willtek Communications, the Willtek 4914 renders an individual RF adapter for each type of TETRA radio unnecessary. Service and repair shops testing TETRA mobile phones can now test their radios without having to use type-speciﬁc RF (radio frequency) adapters. The antenna coupler complements the 2303 Stabilock, a dedicated TETRA mobile station tester for service in the ﬁeld of PMR (professional mobile radio). It can also be used for mobile phone systems operating in the 400 MHz range, such as CDMA-450. The TETRA phone is placed on the shuttle of the 4914 which in turn is connected to the RF port of the radio test set. This way, handling is signiﬁcantly simpliﬁed. Previously, without expensive and difﬁcult to handle special adapters, it was almost impossible to test a hand-portable radio. High linearity switch high isolation and low insertion loss Tyco Electronics has introduced a low-cost, RoHS compliant, dual SPDT switch die for broadband applications that require high linearity, low insertion loss and high isolation. Designated M/A-COM MASW-008206-000DIE, the switch is intended for 802.11a, 802.11b/g, PC Card and access point applications and is optimized for 2.4 GHz as well as 5.8 GHz operations. With its low leakage current, it maximizes system linearity performance while reducing DC power consumption. The switch is ideally suited for 802.11b/g applications with a 3.0 V bias and was designed to have a low typical insertion loss of 0.7 dB at 2.4 GHz while achieving an isolation of 28 dB and P1dB of 28 dBm. Typical insertion loss at 5.8 GHz is 0.9 dB with an isolation of 25 dB and P1dB of 28 dBm. This dual SPDT switch is fabricated on a low-cost 0.5-micron gate-length GaAs process and features full passivity for increased reliability. www.mwee.com/207401987 Radio shop managers can also raise the level of conﬁdence in the TETRA equipment because the antenna is included in the test. The company’s 4914 antenna coupler enables users to reliably and safely test different handportable radios in a few steps. Handling has become so easy that the antenna coupler can even be used by untrained staff. The shuttle provided with the 4914 holds the radio terminal and allows for taking high precision measurements at good repeat accuracy because the radio is positioned accurately. www.mwee.com/207001748 Low-jitter, dual-output clock generator delivers a wide frequency range Maxim Integrated Products has introduced the MAX3674 wide-frequency-range, dualoutput clock generator for high-speed system equipment. It uses a low-noise VCO and PLL architecture to generate a low, 5 ps RMS jitter output clock up to 1360-MHz from a low-frequency reference clock provided by the on-board crystal oscillator or external LVCMOS clock. To reduce cost, it provides two differential LVPECL outputs for the same or different frequencies, eliminating one high-frequency crystal oscillator. www.mwee.com/207402039 Microwave Engineering ● May 2008 ● www.mwee.com http://www.mwee.com/207100264 http://www.mwee.com/207400826 http://www.mwee.com/207401987 http://www.mwee.com/207001748 http://www.mwee.com/207402039 http://www.mwee.com

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Microwave Engineering Europe - May 2008 News Contents Comment Cover Feature: How to Succeed as a GaAs Foundry Wireless Networking: Wireless Coverage Where Everybody WINS Wireless Networking: Achieving Good Coexistence in the 2.4 GHz ISM Band GPS and Satellite: GPS developments: Galileo Moves Forward with Successful Giove-B Satellite Launch — Broadcom Targets AGPS in Mobile Phones and Devices Raising the Bar for the Radio: Making 802.11n Work Reducing Power Consumption in Ultrawideband Chips WiMax Catches Second Test Wave Products Calendar

Microwave Engineering Europe - May 2008

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