Wireless Design & Development articles from February 2009

Wireless Design & Development archives from February 2009

The stimulus package--what's in it for the tech industry?(UP FRONT)
February 1, 2009... As I write this editorial column today, the economic stimulus plan created by President Obama and Congressional Democrats to revive the economy is being debated in the House. If the bill becomes law, the proposed $825 billion package of...

LNA combines low power, high gain performance for mobile Wi-Fi applications.(WHAT'S HOT: PRODUCT NEWS)
February 1, 2009... [ILLUSTRATION OMITTED] At 5.8 GHz, NEC's low noise NESG4030M14 HBT delivers 11 dB of gain at a low 2 V/6 mA bias, making it appropriate for battery-powered products. Fabricated using NEC's latest 140 GHz fMAX UHS4 SiGe:C profess, the...

Software radio PMC module.(WHAT'S HOT: PRODUCT NEWS)
February 1, 2009... [ILLUSTRATION OMITTED] Pentek, Inc.'s Model 7153 digital down converter (DDC) is a four-channel, high-speed digitizer PMC module designed for processing baseband RF or IF signals from a communications receiver. Four of these 200 MHz,...

Wire-wound power inductor offers highest rated current for size.(WHAT'S HOT: PRODUCT NEWS)
February 1, 2009... Taiyo Yuden (USA) Inc. announces the availability of its RL3225 series of compact, low profile, wire-wound chip inductors for switch-mode DC/DC converter applications in digital cameras, portable games, hard disk drives and other...

Diagnosis technology slashes debug effort for complex SystemVerilog Assertions.(WHAT'S HOT: PRODUCT NEWS)(OneSpin Solutions)(Brief article)
February 1, 2009... [ILLUSTRATION OMITTED] OneSpin Solutions has mainstreamed comprehensive formal assertion-based verification (ABV) for SoC, ASIC and FPGA designs by delivering a structured, step-by-step approach to its use and adoption. This approach is...

Specifying directional couplers for critical applications: unfortunately, the ideal directional coupler does not yet exist. However, system performance will benefit greatly by keeping key concepts and parameters in mind.(EYE ON COUPLERS)(Technical report)
February 1, 2009... Over the years many different techniques have been utilized to bring about the physical realization of directional couplers. The scope of this article is limited to the discussion of quarter-wavelength, coaxial, directional couplers, as this...

Noise elimination in a power converter control circuit: grounding and care in layout is the key to keeping noise out of the control circuit and allowing correct operation.(Cover story)
February 1, 2009... [ILLUSTRATION OMITTED] Power converters perform an essential task in this world where electronic equipment is so pervasive. Power converters perform these tasks efficiently by switching voltages and currents through the capacitive and...

Low cost FPGA-based HD/SD SDI transceivers: the recent advent of low-cost FPGAs equipped with high-performance transceivers and DSP blocks will greatly reduce the build and deployment costs of a video broadcast system.(FPGA-BASED SDI TRANSCEIVERS)
February 1, 2009... As the explosion of HDTV, IPTV, VoD and YouTube downloads continues, together with the increased capabilities and falling prices of FPGAs, it is inevitable that the two technologies will intertwine. A key part of the former is the ability to...

Base station technologies.(BRAINSTORM)
February 1, 2009... Welcome to brainstorm! At 58% Power Added Efficiency (PAE), 50 W of output power would require only 86 W of DC power, rather than the 500 W required by today's high power RF amplifiers, which operate at 10% efficiency. Q: How can we...

LTE testing challenges: working closely with the test equipment vendor is required in order to synchronize feature implementation, reference specifications and timely delivery of the test equipment software.(DESIGN TALK: LTE TESTING)
February 1, 2009... LTE (Long Term Evolution) is a Mobile Broadband standard defined by the 3rd Generation Partnership Project (3GPP). LTE is so named because it is an evolution from previous wireless technology specifications (GSM/EDGE, WCDMA, HSPA and HSPA+)....

Broadband baluns target semiconductor tuner applications.(PRODUCT FOCUS: TRANSMISSION COMPONENTS)
February 1, 2009... [ILLUSTRATION OMITTED] Anaren's B0080K7575A00 75-[ohm] and B0080K5050A00 50-[ohm] 1:1 broadband baluns meet the requirements of OEMs developing mobile and non-mobile broadcast technology based on next-generation semiconductor tuners. ...

500 W combiner performs from 2 to 200 MHz.(PRODUCT FOCUS: TRANSMISSION COMPONENTS)(Pulsar Microwave Corporation)(PP2-18-450/22N)(Brief article)
February 1, 2009... [ILLUSTRATION OMITTED] Pulsar Microwave's Model No. PP2-18-450/22N combiner delivers 500 W to the sum port over the frequency range from 2 to 200 MHz. The 5" x 3" x 1.5" device demonstrates insertion loss of 0.6 dB, isolation of 20 dB...

Coupler functions in GaN MMIC devices.(PRODUCT FOCUS: TRANSMISSION COMPONENTS)
February 1, 2009... Innovative Power Products' Model IPP-4011 transforming 90[degrees] hybrid coupler combines two signals of up to 300 W CW total output power in GaN MMIC devices with 25 [ohm] input and output impedances. The 2.20" x 0.80" x 0.23"...

SMA power splitters available in small package.(PRODUCT FOCUS: TRANSMISSION COMPONENTS)(Mini-Circuits ZX10 SMA)(Brief article)
February 1, 2009... [ILLUSTRATION OMITTED] Mini-Circuits' ZX10 SMA power splitters measure 0.74" x 0.90" x 0.54". The unibody-constructed components operate in laboratory production and system environments over frequencies from 2 MHz to 12.60 GHz. The devices...

Circulator covers 1,000 to 2,000 MHz band.(PRODUCT FOCUS: TRANSMISSION COMPONENTS)(RADC-1000-2000M-N23-200WR-b)(Brief article)
February 1, 2009... [ILLUSTRATION OMITTED] Raditek's RADC-1000-2000M-N23-200WR-b octave band circulator performs from 1,000 to 2,000 MHz. The 78.4 x 77 x 21.2 mm device delivers 75 W forward power and reverse power of l, 5, 10, 20 or 25 W. The RoHS-compliant...

FIR filter with integrated gain and compression.(TECHNOLOGY AWARD)
February 1, 2009... [ILLUSTRATION OMITTED] Quickfilter Technologies Inc. has developed an audio applications-specific FIR (Finite Impulse Response) filter chip that will enable audio equipment designers to achieve higher audio quality at a low cost. The...