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4hv.org :: Forums :: General Science and Electronics
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Need help to generate a 1GHz signal

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Avi-Physicist
Sat May 05 2007, 04:35PM Print
Avi-Physicist Registered Member #682 Joined: Sat May 05 2007, 04:16PM
Location: Israel
Posts: 10
I want to do an experiment with a coil, the current that I want to use is AC 1 Ghz (micro wave freq)
but I dont know how to produce an AC 1 Ghz generator.. Need Help...
any ideas!!???
thanks Avi.
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AndrewM
Sat May 05 2007, 04:57PM
AndrewM Registered Member #49 Joined: Thu Feb 09 2006, 04:05AM
Location: Bigass Pile of Penguins
Posts: 362
I've beeen waiting for this moment...


Mod Edit (There was an image here recommending Google.)

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Michael W.
Sat May 05 2007, 05:46PM
Michael W. Registered Member #50 Joined: Thu Feb 09 2006, 04:07AM
Location: Vernon, B.C, Canada
Posts: 324
haha, inappropriate but amazing....
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101111
Sat May 05 2007, 06:25PM
101111 Registered Member #575 Joined: Sun Mar 11 2007, 04:00AM
Location: Norway
Posts: 263
You simply just need a frequency generator and some type of transistors to be switched.
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Andrew L.
Sat May 05 2007, 06:47PM
Andrew L. Registered Member #515 Joined: Sun Feb 11 2007, 02:06PM
Location: Slovenia/Ljubljana
Posts: 94
You probably wont get a lot of power at that frequency.
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Carbon_Rod
Sun May 06 2007, 04:18AM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
Frequency multiplier on a function generator would work...
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ragnar
Sun May 06 2007, 05:08AM
ragnar Registered Member #63 Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
I can push RC oscillator on a 74AC14 chip up to 100MHz. Is there such thing as a x10 frequency multiplying chip?
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...
Sun May 06 2007, 05:17AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
we need more details on what you need before we can give an answer...
1. how much power do you need? You could probably use a gunn diode for a few mw... Heck, there is 1.2ghz radiation hitting you at like -150db from the gps satellites tongue
2. how close to 1ghz does it need to be? A normal magnetron gives 2.5 at all of the power you can use... 900 mhz phone would give a few mw at .9ghz
3. does it need to be variable?

I would probably recommend a vacuum tube...

You can get ghz signal generators (we have few ones at Ortel, output 1w at 10mhz-10ghz in .1hz steps) but you could probably buy a house for the cost of some of them...
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Proud Mary
Sun May 06 2007, 09:39AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
A coil at 1GHz? Surely you mean a strip line? A quarter wavelength at 1GHz is 7.5cm, and a little less when you factor in the velocity of propagation in your conductor. This is why Tesla coils, requiring many turns of wire, are confined to long wavelengths, that is, low frequencies.
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HV Enthusiast
Sun May 06 2007, 11:39AM
HV Enthusiast Registered Member #15 Joined: Thu Feb 02 2006, 01:11PM
Location:
Posts: 3068
miniCircuits might have some off the shelf inexpensive oscillators at 1Ghz.

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