Product category:
EMC Components
News Release from: Smiths Interconnect - EMC Technology | Subject: Thermopad
Edited by the Electronicstalk Editorial
Team on 22 July 2002
Attenuator provides easy temperature
compensation
Thermopad is a patented, absorptive microwave attenuator, whose power dissipation varies with temperature.
EMC Technology's Thermopad is a patented, absorptive microwave attenuator, whose power dissipation varies with temperature This device can be used in any application requiring a known amount of attenuation change for a particular temperature shift
This article was originally published on Electronicstalk on 13 Aug 2002 at 8.00am (UK)
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Attenuators provide high-frequency compensation
The KTVA product line, the latest in EMC Technology's Thermopad family of temperature variable attenuators, provides stable temperature compensation in designs that operate between 18 and 42GHz.
Temperature variable attenuator goes coaxial
The popular temperature variable attenuator Thermopad from EMC Technology now comes in a coaxial package.
This is particularly useful for maintaining the output of gain stages, mixers, power dividers and other signal processing components over temperature.
In applications from DC to 20GHz, the Thermopad is the ideal temperature-compensation solution for cost, performance, and reliability.
It can replace closed-loop temperature compensation circuits with a single chip device, requiring no bias or control.
Measuring 3.10 x 3.68 x 0.51mm (planar), the TVA series covers DC to 6GHz with attenuation values ranging from 1 to 10dB in increments of 1dB.
Temperature coefficient of attenuation values from -0.003 to -0.009dB/dB/C are offered in increments of -0.001.
Terminal options include planar, single wrap and triple wrap.
The straight planar device for flip chip mounting offers the best RF performance at the lowest cost.
Single wrap features metallisation wraps around ground terminal only with full backside metallisation.
Triple wrap has metallisation wraps around input, output, and ground terminals MTVA series measure 1.52 x 1.91 x 0.30mm (planar) and cover DC to 18GHz.
Attenuation values range from 1 to 6dB in increments of 1dB.
Temperature coefficient of attenuation values range from -0.003 to -0.007dB/dB/C in increments of -0.001.
MTVA devices offer all the terminal options of the TVA series but also add single wrap gold and gold options.
Single wrap gold offers metallisation wrapped around the ground terminal only with full backside metallisation.
Input and output terminals have wire bondable gold metallisation.
The gold option is a planar device with wire bondable gold metallisation on all three terminals.
The HTVA series feature an operating frequency range from DC to 20GHz.
Measuring 1.40 x 1.40 x 0.41mm (planar), the devices offer attenuation values of 3 and 6dB and a temperature coefficient of attenuation of -0.004dB/dB/C.
Further, the planar device features wire bondable gold metallisation.
Consult the Thermopad section of EMC Technology's website for the available combinations of attenuation, TCA and termination style.
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