Re: Transmitting high-speed PWM over RF

[WarMonkey]

The first way is to parameterize the PWM signal, convert it into some kind of data stream and reproduce it on the receiver side.

The second way is to use analog modulation sending the PWM signal on a RF carrier, like FSK or PSK modulation.

White, Joshua J <jjwhite@riversideresearch.org> 于2022年8月3日周三 00:50写道：

First, let me apologize in advance if this isn't the correct forum for this question.

 

I have a 50 MHz PWM signal (it's actually a 50 MHz 50% DC clock with a 1PPS clock embedded with PWM) that I would like to transmit over the 2.4 GHz ISM band with as low latency as possible. My original thought was to digitize the clock with a high-speed ADC, then stream the samples to GNU Radio and transmit via SDR, then recover on the receive side and playback the samples with a high-speed DAC. The problem I'm running into is that the only capture cards I've been able to find capable of running at the sample rate needed (>500MS/s) and streaming in real-time to GRC are prohibitively expensive ($8000+).

 

My question is, is anyone aware of any alternative methods of transmitting the 50 MHz PWM over ISM? I would be willing to entertain a different method of streaming to GRC or an entirely different setup. I don't know of any radios that could take the signal as input directly and transmit it, then receive it and output it directly, but admittedly I am rather new to the world of RF so it's possible there's a solution that exists that I'm simply unaware of.

 

Very respectfully,

 

Joshua White

Precision Timing Systems Engineer

Engineering & Support Solutions Directorate

www.riversideresearch.org

T: 937.986.3153 | F: 937.431.3811

 

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