FSK Baud rate - Electronic Circuits Projects Diagrams Free

khgsm2007 · 10th May 2008, 08:58 AM

hi
any one can explain the relation between carrier freaquency " RF " and the data Baud rate It can handle using FSK technique.

Examplr : If Ihave 50 MHZ FM transmitter the how much BAUD RATE can it handle using FSK ,

BR

gramo · 10th May 2008, 09:04 AM

What RF module are you using?

The 50Mhz is most probably the spectrum the modules are using, not the baud

khgsm2007 · 10th May 2008, 10:26 AM

hi
Please Just forget about ready RF modules , i am dealing with a small FM transmitter with few Millewatts , i want to send data using this 50 MHZ transmitter using FSK , theoritcally in FSK the zeros & ones will deviate the 50 MHZ to some additional KHz
what iam asking for is the limit of data baud rate " Kbps " i can send / rescive using the 50 mhz RF carrier

Thanks alot

BR

gramo · 10th May 2008, 10:38 AM

Quote:

Originally Posted by khgsm2007

hi
Please Just forget about ready RF modules , i am dealing with a small FM transmitter with few Millewatts , i want to send data using this 50 MHZ transmitter using FSK , theoritcally in FSK the zeros & ones will deviate the 50 MHZ to some additional KHz
what iam asking for is the limit of data baud rate " Kbps " i can send / rescive using the 50 mhz RF carrier

Thanks alot

BR

In that case, wouldn't it come down to the encoder/decoder your using, and its relevant data sheet?

khgsm2007 · 10th May 2008, 10:51 AM

hi
whats up with encoder / decoder ??!! , what Iam asking
is just the realtion between modulating " abud rate " & modulated " RF frequncy" can I send 1000 mega bit per second data for example ??!! or there is alimit of data rate considering the carrier Rf , data rate , modulting technique ... etc

BR

**Nigel Goodwin** · 10th May 2008, 10:54 AM

Essentially the lower the frequency the lower the baudrate, simply because higher baudrates take more bandwidth.

Papabravo · 10th May 2008, 12:35 PM

In theory you could use 100 MHz of bandwidth centered at 50 MHz. There would be some problems with this approach however. Not the least of them being creating an antenna and a receiver to cover that range. An analog television channel is 6 MHz. and an uncompressed digital channel supposedly takes 10-12 MHz. These seem like practical limits for information transfer over an RF link regardless of the modulation method. On the digital channels they now make use of compression algorithms to cram more channels into the same bandwidth.

khgsm2007 · 10th May 2008, 01:42 PM

thanx alot for good info.

BR

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10th May 2008, 08:58 AM	(permalink)
khgsm2007	FSK Baud rate hi any one can explain the relation between carrier freaquency " RF " and the data Baud rate It can handle using FSK technique. Examplr : If Ihave 50 MHZ FM transmitter the how much BAUD RATE can it handle using FSK , BR

10th May 2008, 09:04 AM	(permalink)
gramo	What RF module are you using? The 50Mhz is most probably the spectrum the modules are using, not the baud __________________ Spency. PIC Micro's - Your mind is the limit PIC's and interfacing with other devices - a PIC Basic Guide @ digital-diy.net

10th May 2008, 10:26 AM	(permalink)
khgsm2007	hi Please Just forget about ready RF modules , i am dealing with a small FM transmitter with few Millewatts , i want to send data using this 50 MHZ transmitter using FSK , theoritcally in FSK the zeros & ones will deviate the 50 MHZ to some additional KHz what iam asking for is the limit of data baud rate " Kbps " i can send / rescive using the 50 mhz RF carrier Thanks alot BR

10th May 2008, 10:51 AM	(permalink)
khgsm2007	hi whats up with encoder / decoder ??!! , what Iam asking is just the realtion between modulating " abud rate " & modulated " RF frequncy" can I send 1000 mega bit per second data for example ??!! or there is alimit of data rate considering the carrier Rf , data rate , modulting technique ... etc BR

10th May 2008, 10:54 AM	(permalink)
Nigel Goodwin	Essentially the lower the frequency the lower the baudrate, simply because higher baudrates take more bandwidth. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

10th May 2008, 12:35 PM	(permalink)
Papabravo	In theory you could use 100 MHz of bandwidth centered at 50 MHz. There would be some problems with this approach however. Not the least of them being creating an antenna and a receiver to cover that range. An analog television channel is 6 MHz. and an uncompressed digital channel supposedly takes 10-12 MHz. These seem like practical limits for information transfer over an RF link regardless of the modulation method. On the digital channels they now make use of compression algorithms to cram more channels into the same bandwidth. __________________ We never have time to do it right; but we always have time to do it over.

10th May 2008, 01:42 PM	(permalink)
khgsm2007	thanx alot for good info. BR