RF mixing

RichardMid · Jul 21, 2003

Firstly, how do you go about mixing a 20kHz signal up to 433Mhz? I am modulating the data at low frequency, and would like to mix it up to 433MHz.

Secondly what oscillator is good at such high frequencies. I am looking at a DRO. Is there anyrhing else I should consider?

At the receiver side I would like to filter the incoming signal just after the antenna, but the bandwidth is only 5kHz, leading to impractical filter design. Please help...

IRstuff · Jul 21, 2003

You REALLY need to go read an introductory RF text.

TTFN

RichardMid · Jul 23, 2003

I have read up quite alot, but I cant seem to find anything that will answer my questions.

I might have put the question wrong. I would like to mix the signal up. Obviously I need a mixer with a local oscillator, but will one mixer be sufficient? How do I know whether I should use more than one?

Thanks
P.S. Any links will be very helpfull

brett12 · Aug 3, 2003

the SA612 is a neat little mixer ic and includes its own local oscillator, or use an external, i've only used it at lf and hf but the spec states operation to 500mhz
if you do a search for "sa612 pdf" you should find a data sheet with notes on how to use it, also try doing a search through some of the many HAM radio pages, loads of good info out there

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

RF mixing

RichardMid

Electrical

Recommended for you

IRstuff

Aerospace

RichardMid

Electrical

brett12

Electrical

Similar threads

Part and Inventory Search

Sponsor