Thesis proposal... (Looking for suggestions)

It would help perhaps if you gave a small clue as to your field of interest !

Graham

GaAs fets, and especially phemts, enhance past Idss with positive gate voltage. Two questions...

What are frequency-dependent characteristics (trapping state dispersion) in this region?

If you forward-bias the gate, is there bipolar transistor action? (I think I've seen this.) If so, how fast is it?

If you do either one, I'll furnish parts and buy a copy of your thesis.

John

My feild of interest is on electronics.. (Zilog and PIC) Microcontroller applications, and Digital Signal Processing. I am also interested on wireless technologies such as Bluetooth, Zigbee, Wi-Fi, IR, etc..

The topic was great but i think i'm not ready for that type of thesis. Do you have any suggestions other than that? Thanks for the reply. Anyway, I'll ask my groupmates first about your proposal.

How to improve 'Aurora' solar car wheel motor efficiency and apply the results to design a high efficiency electric bike motor :)

You've shut 90% from the readers of this forum with these questions. Maybe post a few phemts device names and applications if you really expect answers... :)

Vasile

Wander around your EE department, sticking your head into offices and asking the instructors therein if they have a need for someone to do a thesis in a particular area.

Do the one that sounds most interesting.

This may not be the best approach, but it certainly worked for me, and I got to build a radio out of the deal (It worked quite well. In fact, my thesis adviser told me nearly 20 years later that he hadn't expected it to work at all, so he was very pleasantly surprised). Now it's so vitally important to world civilization that it's even on the web!

Do you have a specialty area, or preference of some sort? Analog, digital, optical, devices, physics? There's a huge world of possibility.

John

Find a way to make one electron oscillate within one magnetic line of force, to simulate an inside-out atom. Generate microwaves, lase, or even open a portal to Zero Point Energy.

Design and build a nanometer-sized klystron.

Cross-train to molecular biochemistry, and make an analog of chlorophyll that converts photons directly to electrons, yielding a PV panel that's, say, 60% efficient.

Give the Shuttle astronauts a voice system that's as good of fidelity as ordinary TV, like their video is. ;-)

Good Luck! Rich

He wanted a research project, and anything's better than yet-another-robot. You can google this stuff, too, if it sounds interesting. The trapping-dispersion thing in GaAs fets is well known... transconductance changes at low frequencies, 10's of KHz sorta stuff, because GaAs is full of defects that trap charge in little niches in the gate region, sorta erratically. That also causes DC offsets to change with bias/temperature history, sort of like the first, dirty-oxide CMOS fets and opamps. I can imagine all sorts of fairly easy experiments to play with trapped charges.

I haven't found any references to the possibility of gaasfets having a bioplar transistor mode; I think I've seen it, and I guess it's possible, but I don't have the time or a reason to explore it just now. If some student was interested in this as a project, I'd help.

The other fun project I'd like to do some day is resolve single-electron leakage steps in a cmos device. It might be possible.

Or use an eprom or a dram as an imager; that's been done, but it still could be interesting.

Or, well, he *could* build a robot.

John

Microcontroller stuff ?

Ok !

There's plenty there of interest.

An audio application maybe ?

I can think of one straight off but it's one I'd like to pursue myself !

Contact me on my posted hotmail address.

Graham

That could be an A thesis: a 3W class D audio amplifier using only a PIC12F675.

Think about it.

Vasile

Wrong newsgroup, then. Try one of the software groups. Programming PICs has nothing to do with electronics.

John