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Author Topic: Can a device absorb all frequencies of microwaves?  (Read 2985 times)

charlie tan

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charlie tan  asked the Naked Scientists:
   
Hi chris,

I am trying to build a device which can absorb microwaves regardless of which frequency it is in and how long the microwave is.   In a nutshell, I was thinking along the lines of putting a program with all the frequencies programmed into a specific IC component of the circuit and then attaching an antenna to absorb the microwaves.  All the other components i can add later on.  I just need to know whether this is a viable idea or not as i am very interested in how microwaves work so building a device which can act as a receiver will be very challenging to me as i know the microwave transmitter can change frequencies using potentiometers.  If you can shed some light on it i would be very grateful.

Any help will be much appreciated.  Thank you

Charles

What do you think?
« Last Edit: 09/07/2010 19:30:03 by _system »


 

Offline RD

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« Last Edit: 09/07/2010 20:16:35 by RD »
 

Offline tommya300

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Can a device absorb all frequencies of microwaves?
« Reply #2 on: 10/07/2010 02:06:01 »
charlie tan  asked the Naked Scientists:
   
Hi chris,

I am trying to build a device which can absorb microwaves regardless of which frequency it is in and how long the microwave is.   In a nutshell, I was thinking along the lines of putting a program with all the frequencies programmed into a specific IC component of the circuit and then attaching an antenna to absorb the microwaves.  All the other components i can add later on.  I just need to know whether this is a viable idea or not as i am very interested in how microwaves work so building a device which can act as a receiver will be very challenging to me as i know the microwave transmitter can change frequencies using potentiometers.  If you can shed some light on it i would be very grateful.

Any help will be much appreciated.  Thank you

Charles

What do you think?
You need to know the center frequency and what the bandwidth is for an upper and lower sidebands.
Tuning a microwave horn receiver circuit is a bit different then just turning a variable capacitor trimmer/tuner for a low frequency antenna.
A microwave cage can absorb and shunt the microwave to ground ...
 

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Can a device absorb all frequencies of microwaves?
« Reply #4 on: 26/07/2010 11:01:58 »
Your question is not clear.  Why do you want to "absorb" the microwave frequencies?  do you

1  Just want to get rid of them to make an are free of them

2 Do you just want to extract the energy that they contain so you can use it for another purpose

3 Do you want to extract the information that they may contain because this may be of use to you


What you need to do is very different in each of these cases.

Also as tommy says you cannot say "all" arbitrarily you need to know the range of frequencies

Microwaves are the frequency band from 1GHZ to 1000GHZ  shorter than that is infra red and longer UHF radio
 

Offline yor_on

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Can a device absorb all frequencies of microwaves?
« Reply #5 on: 28/07/2010 11:37:05 »
A truly inspiring ditty RD.
I've already gone to the cabinet to pick me some chicken wire.

Am I right in it expecting its protective polygons to shield me off as good as tinfoil?
Should I wear it to bed too?
 

Offline playpiano1980

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Can a device absorb all frequencies of microwaves?
« Reply #6 on: 28/07/2010 15:32:40 »
Your question is not clear.  Why do you want to "absorb" the microwave frequencies?  do you

1  Just want to get rid of them to make an are free of them

2 Do you just want to extract the energy that they contain so you can use it for another purpose

3 Do you want to extract the information that they may contain because this may be of use to you


What you need to do is very different in each of these cases.

Also as tommy says you cannot say "all" arbitrarily you need to know the range of frequencies

Microwaves are the frequency band from 1GHZ to 1000GHZ  shorter than that is infra red and longer UHF radio

Good point, for sure, more information is needed to give a logical response...subscribed*
 

Offline tommya300

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Can a device absorb all frequencies of microwaves?
« Reply #7 on: 28/07/2010 15:40:20 »
July 9th? I think Charles lost interest
 

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Can a device absorb all frequencies of microwaves?
« Reply #7 on: 28/07/2010 15:40:20 »

 

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