•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<

Job Board

About RF Cafe™

Sitemap

RF Cafe Software

RF Cascade Worbook
 RF Cascade Workbook 2005 - RF Cafe
Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

Require RF transceiver - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Below are all of the old forum threads, including all the responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

 Post subject: Require RF transceiver
Posted: Thu Aug 19, 2010 8:36 am 
 
Lieutenant

Joined: Thu Aug 19, 2010 7:33 am
Posts: 3
Hi,
I am an RF design engineer. I am struck with one problem :( , hope you will help me out--

I am working for a wireless RF project for RF communication and customer needs the product in very harsh environment like operating temperature -80 to +140degC.

Please help me out in building RF communication circuitry for it. I would initially need RF transceiver which works at that temperature.

Looking forward for your valuable suggestions, thanks in advance

Vandana


 
   
 
 Post subject: Re: Require RF transceiver
Posted: Thu Aug 19, 2010 10:34 am 
 
Colonel

Joined: Tue Apr 11, 2006 8:13 pm
Posts: 44
Vandana,

It is probably going to be difficult finding components that work over that temperature range. Even if you do, you would have to go to MIL grade parts which will be prohibitively expensive.

You might look at some form of thermal control for the circuit to keep it within reasonable operating temperatures.

Karthik


 
   
 
 Post subject: Re: Require RF transceiver
Posted: Fri Aug 20, 2010 2:08 am 
 
Lieutenant

Joined: Thu Aug 19, 2010 7:33 am
Posts: 3
Thanks Karthik for your reply...
Even I am thinking same to use heat insulators to protect the circuitry, but i do not have much experience in it.
Can you please sugest some material and its usage application of heat insulators.

Regards,
Vandana


 
   
 
 Post subject: Re: Require RF transceiver
Posted: Fri Aug 20, 2010 12:33 pm 
 
Colonel

Joined: Tue Apr 11, 2006 8:13 pm
Posts: 44
Minco makes a variety of heat strips that can be used on a variety of surfaces. http://www.minco.com/

One way of doing this is to use a microcontroller to monitor temperature (ambient and/or board temp) and based on some pre-defined setpoint, turn on/off the heat strip.

You might also get some pre-configured thermal control unit - minco might have them as well.


 
   
 
 Post subject: Re: Require RF transceiver
Posted: Mon Aug 23, 2010 2:13 am 
 
Lieutenant

Joined: Thu Aug 19, 2010 7:33 am
Posts: 3
Thanks Karthik.

I will look in to it, but I am worried whether any microcontroller will work at this temperature?

If you know any of those then please let me know....

Thanks again for your response....

Vandana





Posted  11/12/2012

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.