Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
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My Hobby Website:
simulation and results for a GSM cellphone repeater for home - RF
RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media
platforms dominating public commenting venues. RF Cafe Forums began sometime around
August of 2003 and was quite well-attended for many years. By 2010, Facebook and
Twitter were overwhelmingly dominating online personal interaction, and RF Cafe
Forums activity dropped off precipitously. If the folks at
phpBB would release a version with integrated
sign-in from the major social media platforms, I would resurrect the RF Cafe Forums,
but until then it is probably not worth the effort. Regardless, there are still
lots of great posts in the archive that ware worth looking at.
Below are the old forum threads, including responses to the original posts.
|-- Amateur Radio
Gripes & Humor
-- CAE, CAD, &
Test & Measurement
Post subject: simulation and results for a GSM cellphone
repeater for home Posted: Mon Feb 27, 2006 6:10 pm
Joined: Sat Feb 25, 2006 6:10 pm
I need help in choosing a simulation package(software) to
simulate a GSM phone repeater operating on 1900 MHz or 850 MHz which
are the 2 main frequency band used in Canada.
Does anybody knows
how to do this or anybody have done this simulation and I need help
to first simulate this and then of course impelment the unit. However,
at this stage I only need the simulation and the results to have an
output of around 1W or less. (the maximum allowed based on government
regulations and spectrum canada is 2Watts).
The components and
parts I would like to use are Antenna, Duplxere, LNA (low noise amplifiers),
and of course the band-pass filter and maybe another stage of power
amplifier after the band-pass filter for uplink and the offset frequency
for the downlink with the same components for the downstream. I can
also send you my overall design on paper and the range of frequency
I want to simulate if it will help you more.1850 - 1910 MHz( uplink)
1930 - 1990 MHz (downlink)
Thanks a lot
My Email: email@example.com
Post subject: Simulator for GSM repeaterPosted: Wed Mar 01, 2006 1:16
Joined: Wed Feb 22, 2006 3:51 pm
The choice of a simulator depends on a number of
1. What kind of results do you need? Power, distortion, impedance,
2. What do you have to provide the simulator? Detailed schematic
with specific parts, with available models? Or just "10 dB amplifier"
for one stage?
3. What kind of budget (time and money do you have?
An associated question: Will you use the simulator again, or must its
costs be allocated totally to this repeater project?
4. What kind
of filters are you considering? Make or buy?
All these affect