Radio Frequency Amplifier for an Ion Trap Control
Sunday, 26 February 2012
Other Applications
The RF amplifier can be used in other systems such as the paul trap, cylindrical ion trap,the linear ion trap and the penning trap which all use amplitude modulated Rf voltage opearating about the same frequency(1-2MHz). They can be operated at low voltages and are readily used in mass spectometers to detect or analyse chemicals i.e to detect the presence of explosives in an airport .
Friday, 24 February 2012
Design and biasing
Pspice simulated circuit for our design |
Gain for Pspice simulation |
Monday, 6 February 2012
Noise
Following the design of our circuit we are starting to think about noise generated by the circuit components which may affect its output and real life functionality. Although in the simulations our design has a gain of almost 2 but in reality this will not be the case. From theory, the emitter resistor (RE) reduces the noise in our circuit and in turn increases stability of the circuit.
We have been discussing the how to test our circuit when it is built. We will pass white noise through the circuit and using our theoritical knowledge of band pass filters, check that the desired frequency range is at the output.
We have been discussing the how to test our circuit when it is built. We will pass white noise through the circuit and using our theoritical knowledge of band pass filters, check that the desired frequency range is at the output.
Resonant Frequency
Thursday, 2 February 2012
Intro
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Common emitter amplifier circuit |
The amplifier we are designing should operate at 1MHz, we have been advised to begin by Professor Steve Taylor, who is the project supervisor, to begin by designing a 100kHz common emitter amplifier, then increase the specification to 1MHz. The purpose of the amplifier designed is to operate an ion trap control which will be used in public places like airports to check for illegal substances. The design we used is similar to a common emitter amplifier above but has the emitter capacitance omitted as we designed the amplifier to have a large bandwidth as we were given no limit.
Monday, 30 January 2012
First blog...
This blog has been created by Ciara Murphy and Joseph Utuk for our second year project. The aim of our project is to design a radio frequency amplifier for an ion trap control.
We hope to use this blog as a means of documenting our ideas and the links we have used to research.
Hope you enjoy,
Ciara and Joe.
We hope to use this blog as a means of documenting our ideas and the links we have used to research.
Hope you enjoy,
Ciara and Joe.
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