Microwave Engineering Europe - November 2007 - (Page 37)

PRODUCTS 37 Converters enable four-port network analysis target W-band 75 GHz to 110 GHz applications ZVA-Z110 mm-wave converters add the W-band frequency range of 75 GHz to 110 GHz to the high-end network analyzers from the company. This covers important frequency bands used in emerging vehicle distance radar applications (77 GHz) or aerospace and defense applications (94 GHz). Additional hardware is not required, which saves time and costs. Moreover, the company claims to be the first provider to support multiport measurements in the W-band. The four-port network analyzer models do not require an additional external generator, significantly reducing measurement times. The ZVA-Z110 converters can be integrated into wafer 6 GHz Fractional-N PLL synthesizer delivers ultra-fine frequency resolution Claiming the industry’s finest resolution, the ADF4157 Fractional-N PLL synthesizer from Analog Devices improves performance while reducing design cost and complexity in wireless infrastructure, satellite and radio systems. The high frequency, fractional-N PLL synthesizer targets applications that require low phase noise and a fine-tuning resolution, The device’s 25-bit fixedmodulus divider enables this ultra-fine frequency resolution. ADIsimPLL design and simulation software, which greatly simplifies and streamlines loop filter design, is available free of charge as a download. The ADF4157 operates up to 6 GHz using a power supply ranging from 2.7 V to 3.3 V. It can be powered down when not in use, resulting in overall system current reduction from 23 mA to 0.01 mA. The device comprises a lownoise digital phase-frequency detector (PFD), a precision high-voltage charge pump, a programmable reference divider, programmable charge pump currents and a 25-bit fixed-modulus fractional divider. Additionally, the RF output phase is programmable for applications that require a particular phase relationship between the output and the reference. A simple three-wire interface controls all of the onchip registers. www.analog.com probers, and a dynamic range of typically greater than 110 dB allows faster measurements and tests on high-rejection filters. Also, multiport technology enables three-port and four-port measurements on balanced circuits for automotive MMICs (77 GHz). Tests on low-noise amplifiers can also be performed without any problem for the first time. www.rohde-schwarz.com Microwave Engineering ● November 2007 ● www.mwee.com 037_MWEE.indd Sec1:37 26/10/07 11:09:33 http://www.analog.com http://www.rohde-schwarz.com http://www.lpkf.de/LPKF-LDS http://www.lpkf.com http://www.lpkf.com http://www.mwee.com

Table of Contents Feed for the Digital Edition of Microwave Engineering Europe - November 2007

Microwave Engineering Europe - November 2007 Contents News Comment Metamaterials: Metamaterials Tackle Communications Wavelengths Microwave Components — EM tools: Microwave Component Design Easier With New EM and EDA Tools Cover Feature: RF Testing for OFDMA in LTE Base-Stations Startup Eyes Battery-Free Wireless Sensor Nets High-speed ADC Technology Paves the Way for Software Defined Radios Planning a WiMAX network: Maximising the ROI by Using Advanced Optimisation Tools Transporting Video Over Wireless Networks Ultrawideband Under the Gun Specifying the Proper SAW Filter Products Product Feature: RF Test Solution Supports Emerging 4x4 MIMO as Well as Multiple Commercial Standards Calendar

Microwave Engineering Europe - November 2007

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