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August 2010
• Electro-Mechanical Broadband RF Switch.
• Single-Stage Driver Amplifier
• Quad-Band EDGE Radio Solution
• Modeling 3G / WCDMA / HSDPA
• Composite Filters
• Integration of Waveguide
• Coaxial Components
• Antennas Needed
• And More...
 
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Fully Matched Cascadable Amp
The TQP3M9009 has been added to the company’s low noise gain block family for high performance 3G/4G infrastructure. This cascadable amplifier is fully matched internally, allowing designers to focus on system level needs. It operates over a broad .05 to 4 GHz frequency range.

Bandpass Filter
Part number 2965-SMA is a 500 MHz bandpass filter. The filter has a typical 1 dB bandwidth of 8 MHz, insertion loss of 6.5 dB and typical 40 dB bandwidth of 52 MHz. It is supplied in a 0.6 x 0.6 x 2.25" SMA package and may be customized for other center frequencies and bandwidths.

UltraFast™ Digitally Programmable LDO
The LT3071 is the second in a family of digitally programmable linear regulators with the lowest dropout voltage, lowest noise, and fastest transient response of any monolithic 5A LDO currently available. Dropout voltage at 5A is an ultralow 85mV. Its QFN package is 4 x 5 x 0.75mm in size.


Microwave Power MMIC
A 4W C-Band GaAs MMIC for satellite applications, the TMD0608-4 operates in the 5.65 to 8.50 GHz range. With this broad bandwidth, a high gain of 27 dB throughout the operating range, and 50 ohm internal matching, this device is well suited for use as a pre-amplifier in C-Band satellite and terrestrial communications.

USB Power Sensors
The U2000 Series USB-based power sensors are compact, portable solutions that allow average power measurements without power meters. All sensors, except the U2004A model, feature internal triggering and trace display capabilities. Current users of these sensors can upgrade their firmware for free.

Directional Couplers
Miniature air dielectric directional couplers are rugged, lightweight devices that offer lower insertion loss than comparable stripline units. The simplified construction allows for greater flexibility in creating customized configurations. Any port can be used as the input with these devices.

Elliptic Lowpass Filter
Part number 2969-SMA is a high order 10 MHz elliptic lowpass filter with sharp transition to the stopband and high stopband attenuation. Typical 1 dB bandwidth is 10.9 MHz with minimum 84 dB attenuation at 13.125 MHz. It is supplied in a 0.6 x 0.6 2.25" package with SMA connectors.

Directional Coupler
Model 110067016 directional coupler has a frequency range of 10 to 67 GHz, 7.25 directivity, and maximum VSWR (any port) of 2.0. Coupling (with respect to output) is 16 +/-1.1 dB and frequency sensitivity is +/-2.0 dB. Operating temperature range is -54 to +85ºC.

Fixed Frequency Synthesizer
The SFS6400A-LF in C-band is a single frequency synthesizer that operates at 6400 MHz. This synthesizer features a typical phase noise of -88 dBc/Hz @ 10 KHz offset and typical sideband spurs of -65 dBc. Its PLL-V12N package measures only 0.60 x 0.60 x 0.13".

Higher Power GaAs FETs
The company has expanded its Ku-Band GaAs FET lineup with two higher output power devices rated for 18 and 30W. Models TIM1213-18L and TIM1213-30L operate in the 12.7 to 13.2 GHz range and are targeted for use in microwave radios for microwave links and satellite communications.
 
EMT SMT Diode TVS Connectors
Now available are transient protection solutions embedded within the connector shell utilizing surface mount (SMT) diodes. Using SMT diode technology allows for increased flexibility in the packaging of transient protection within the connector, saving both space and weight.


Low Noise Gain Block
Model TQP3M9008 is a new low noise gain block that offers high gain over a broad .05 to 4 GHz frequency range. It is a cascadable amplifier that requires no external matching components and can reduce BOMs. The gain block provides 35.5 dBm OIP3, while maintaining a low 1.3 dB noise figure.

 

 

December 2009
VIEW FROM THE TOP

Greg Hindman
President, Nearfield Systems, Inc.

Q: Last year, we asked what kind of impact the worldwide economic crisis had on the markets you serve and on how you run your business under these conditions. One year later, what is your perspective?

A: At the beginning of the year with market uncertainties and worldwide media focus on a worsening economy, many experts predicted a significant drop in orders across the board. Almost a year later, here at Nearfield Systems, Inc. (NSI) orders and sales for Microwave antenna test and measurement products and services are holding up well. NSI has received increased interest in innovative and custom antenna test and measurement products. Many of our core customers and new antenna measurement customers are refurbishing or upgrading legacy test equipment and NSI offers innovative solutions to address this unique market.

Q: Do you think that spending for RF and microwave products will increase or decrease in the 2010 military budget?

A: Many people predicted the new administration would immediately reduce defense spending. As we know, procurement funding extends and overlaps administrative turnovers. Clearly, domestic spending is a priority now, but funding for an adequate defense – especially in the areas of communications - is important to the United States and its allies. NSI is aggressively pursuing antenna test and measurement opportunities within the US DoD and the international arena.

Q: There’s a serious shortage of RF engineers out there – what’s the solution? Is your company involved in any programs that might promote or encourage talented engineering students to concentrate on a career in the microwave industry?

A: For more than 20 years, NSI has supported AMTA, (Antenna Measurement Techniques Association), the international professional organization dedicated to the advancement of the state-of-the-art of antenna test and measurement. Each year, AMTA sets aside special technical, professional networking and social events at its annual symposium to encourage engineering students to consider careers in the Microwave industry. In addition, engineering students from all over the world are encouraged to submit technical papers to the AMTA symposium – the best of which are recognized with cash awards and free membership in AMTA. NSI wholly supports AMTA’s student focus as an essential element of its annual Symposium. NSI also encourages cooperation with academia and are actively collaborating with researchers on joint projects at the University of Ottawa, Canada, the University of London, UK and UCLA in Los Angeles.

Q: What do you feel is the greatest opportunity for manufacturers in either the commercial or military sectors?

A: Clearly, communications advancements in both the commercial and military sectors will drive manufacturers to produce antennas with advanced capabilities. For those of us in the test and measurement sector, two factors continue to drive new business: Innovation and Economy. Manufacturers and antenna users – both commercial and military – are driving the industry for faster and cheaper ways to test. NSI’s test and measurement software and ‘building-block’ component products, along with its advanced, in-house test and measurement facilities used by commercial and military customers, offer an attractive, economical solution for antenna test requirements. ♦

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