High MHz RF Transmitter

[Scott H]

Hello,

It's been some years since I've done much with electronics. I'm researching a project right now that could have commercial application, however, RF transmitting beyond the radio station range of FM is new to me.

Can anybody point me to some good resources on RF electronics at higher frequencies? For instance, in the 900MHz range I'd like to understand what's involved other than just buying a transmitter chip. Is it possible to make my own transmitter circuit or because of the higher frequency am I limited to commercially manufactured circuitry?

It's a bit much to bite off but that's how I like it. It's much more interesting and challenging.

If anybody feels like explaining. Let's say I want to transmits 24 bits of data at 900MHz FSK. What would be each area of focus?

I write software, so it's been almost 20 years since I've done a lot with electronics, circuits, etc. Well, but only 10 years since I've programmed microcontrollers and done some basic PIC projects.

Thank you!

Scott

 

[Phil Allison]

Scott H wrote:

It's been some years since I've done much with electronics. I'm researching a project right now that could have commercial application, however, RF transmitting beyond the radio station range of FM is new to me.

Can anybody point me to some good resources on RF electronics at higher frequencies? For instance, in the 900MHz range I'd like to understand what's involved other than just buying a transmitter chip. Is it possible to make my own transmitter circuit or because of the higher frequency am I limited to commercially manufactured circuitry?

It's a bit much to bite off but that's how I like it. It's much more interesting and challenging.

** Making your own UHF circuits is way outside the realm of *basic* electronics and probably outside any forum on the net.

Take a look inside a cordless phone or other UHF transceiver for an idea what is required to meet modern specifications and legal regulations.



> I write software,

** That explains a lot about you.



..... Phil

 

[Tim Wescott]

On Sun, 28 Dec 2014 11:11:57 -0800, Scott H wrote:

Hello,

It's been some years since I've done much with electronics. I'm
researching a project right now that could have commercial application,
however, RF transmitting beyond the radio station range of FM is new to
me.

Can anybody point me to some good resources on RF electronics at higher
frequencies? For instance, in the 900MHz range I'd like to understand
what's involved other than just buying a transmitter chip. Is it
possible to make my own transmitter circuit or because of the higher
frequency am I limited to commercially manufactured circuitry?

It's a bit much to bite off but that's how I like it. It's much more
interesting and challenging.

If anybody feels like explaining. Let's say I want to transmits 24 bits
of data at 900MHz FSK. What would be each area of focus?

I write software, so it's been almost 20 years since I've done a lot
with electronics, circuits, etc. Well, but only 10 years since I've
programmed microcontrollers and done some basic PIC projects.

Get a copy of the ARRL Handbook (ARRL = Amateur Radio Relay League).
Look on the ARRL website for their current book selection. If they're
selling a copy of the "UHF/VHF Experimenter's Handbook", get it.

There are various technical and regulatory hurdles to overcome, but
they're not insurmountable.

--
www.wescottdesign.com