The switched varactor for high power RF signals is described in this article. This varactor can perform tuneable capacitor operations up to 10 GHz frequencies. The RF micro-electro-mechanical systems (MEMS) has become an atractive area of research in the recent. Devices like tuners, antenna beam forming networks and reconfigurable filters all will benefit from this.

Design principles
In the case of RF MEMS which depend on the electrostatic actuation have a a small air gap in the micrometer range between their movable membrane and ....etc

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powerpoint presentation on varactor diode ....etc

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A variety of technological navigation aids all help pilots achieve a smooth and safe landing. Early pilots didn't worry about keeping away from other aircraft and landed in any direction on an open field that gave them the best angle relative to the wind. As traffic grew and more aircraft began to use airports rather than farms or fields, landings became limited to certain directions, and descending aircraft, competing for the same course, were in danger of colliding. The earliest landing aids were people-powered. Flagmen provided aircraft sepa ....etc

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the design of a generic virtual instrument used for real-time experimentation purposes at Polytechnic Universityâ„¢s control engineering laboratory in a remote-access environment. These instruments can be freely downloaded and the remote user can access the laboratory facilities from anywhere and anytime. The philosophy behind our Internet-accessed remote laboratory is based on a client/server computer configuration. The server, situated near the experiment, transfers to it the received command signals transmitted by the client. The client ....etc

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a fault diagnosis platform for Radar circuit is developed here based on the PXI & GPIB Hybrid Bus and virtual instrument technology. Alongwith it a
fuzzy fault tree reasoning algorithm is also described. The platform has two main parts namely hardware and software. The hardware part again is built-in controller and 3 kind of virtual instruments namely digital storage oscilloscope,
digital multimeter and a spectrum analyzer.a fuzzy fault tree reasoning algorithm is used for constructing the software. an
expert knowledge database containing a ....etc

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Hi.........
We need complete documentation about Pensort Instrument Topic....
So, please do .. as soon as possible. ....etc

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Abstract
MEMS varactors are one of the important passive MEMS devices. Their applica- tions include use in VCOs, tunable impedance matching networks, tunable ¯lters, phase shifters, and true time delay lines. The shunt capacitive structure has been employed in most of the conventional MEMS varactor designs because of its simplicity. However, the capacitance ratio of this conventional shunt capacitive MEMS varactor is limited to 1.5 because of the MEMS Pull- In e®ect, which happens when the de°ection between the MEMS top and bottom m ....etc

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A variety of technological navigation aids all help pilots achieve a smooth and safe landing. Early pilots didn't worry about keeping away from other aircraft and landed in any direction on an open field that gave them the best angle relative to the wind. As traffic grew and more aircraft began to use airports rather than farms or fields, landings became limited to certain directions, and descending aircraft, competing for the same course, were in danger of colliding. The earliest landing aids were people-powered. Flagmen provided aircraft sepa ....etc

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WEATHER MONITORING AND INSTRUMENT CONTROL SYSTEM USING MICROCONTROLLER
Synopsis

Throughout time we've been fascinated by the weather “ studying signs of change and making and acting on predictions. Today we can page link modern instruments to computers to reduce human error, automate record keeping and control conditions should limits be crossed.
Many weather conditions may be measured, including temperature, atmospheric pressure, rainfall, humidity, wind speed, wind direction and solar energy. Local weather measurements are extrem ....etc

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VECTOR SIGNAL ANALYSER IMPLEMENTED AS A SYNTHETIC INSTRUMENT
Submitted by
Bibin Mohanan
S7 ECE
College Of Engineering, trivandrum


OUTLINE
Introduction
Synthetic instruments
Synthetic measurement system
Operation of synthetic instruments
Advantages of SIs
Block diagram of Vector signal analyser
Design consideration of VSA
Constellation &Error vector magnitude diagram
Conclusion
References


INTRODUCTION
Vector signal analyser is an instrument used ....etc

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