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NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

rfnm.io

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Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#31
post #18
post #17

Sorry, u.fl connectors are horrible and I'll never buy a product that uses them.

I don't like them either, but I couldn't find a better way to provide the clock in/out feature and still fit in that area of the board. The optional OCXO on the opposite side of the U.FL connectors doesn't help (can't do edge-launch mmcx, for example), and if you move down you would ruin the legend for the user interface connector. But fair feedback, noted. I can't move the optional OCXO below the enclosure, as that…

They will be the first thing to break.

I can't stand the amount of fragile connectors people keep installing on expensive boards. My BladeRF's micro USB 3.0 sheared off.

USB-C is even a bit contentious for me. USB-A with the 3.0 extensions is much more durable.

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#32
post #16

Earlier quoted context omitted.

I can't commit to pricing before I have decided on a partner for the distribution (DIY vs Kickstarter vs Crowdsupply, they all come with different costs and tradeoffs), but $550 is my target retail price for the Motherboard + Granita + Dev Board + CNC enclosure combo. $450 if you are happy with the Granita Lite board. Everything will be sold separately. As a comparison, $550 would be 10x to 20x less expensive than wh…

This is amazing! I would buy one in this price range. What sort of help/contributions you need/expect from interested users? E.g. financial funding on CrowdSupply, beta testing, feature wishlist, etc.

We need volumes, so the best I can hope for is people join the waitlist and pre-order when we show a functioning prototype. We already placed sizeable orders with the manufacturers and have the first batch planned for September, but further batches are probably going to be delayed into 2024 (we can't start asking for preorders before the product is tested, which is going to take time, so we can't preorder those chips early like we did for the first batch).

Feature wishlist: please! Do send them our way. Especially if it's hardware, this is the right time!

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#33
post #6
post #3

Earlier quoted context omitted.

Seeing the spec I thought there is a Zynq but iMX6 looks even better. Can I get this board as an individual hobbyist instead of a company?

*i.MX 8M Plus, please :-) The 8M Plus is not that different from the RPi4! Yes, of course, this will be sold to anybody and be very, very competitive, like in the order of ~$550 including the Granita board ($100 less for GranitaLite).

I stand corrected. IMX 8M plus. 550 that is a nice price compared to say LimeSDR. I will be sure to grab one when its available.

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#34
post #2

I designed this system (not the chip, clearly), so feel free to ask any questions!

The board layout triggers my OCD :) Why the weird angle of those main ICs? Usually it's 45 degrees or parallel to the board.

Things that are placed non orthogonally is a sign of high speed black magic to me.

Edit: the other thread shows me writing a reply at 2am this morning... Pretty sure I didn't dream walk just to post on HN...

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#35
post #25
post #20

Just trying to get my head around SDR. What are some examples of practical use cases for a platform like this? What are the benefits of this SDR platform compared to other solutions?

A few practical use cases that are not easily covered by similar platforms: 1) Direction finding thanks to the 8x 153 MSPS ADCs and coherent clocks. 2) Mixed domain analyzer: have one daughterboard act as a RF receiver, and at the same time sample an analogue voltage with the other one. This is a capability reserved to the most expensive of test equipment and lets you analyze how a RF switch is behaving (or do side c…

Does this offer 4x RX and 4 TX channels? Or is it 8x RX channels? Is each individual channel capable of MSPS?

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#36
post #25

Earlier quoted context omitted.

A few practical use cases that are not easily covered by similar platforms: 1) Direction finding thanks to the 8x 153 MSPS ADCs and coherent clocks. 2) Mixed domain analyzer: have one daughterboard act as a RF receiver, and at the same time sample an analogue voltage with the other one. This is a capability reserved to the most expensive of test equipment and lets you analyze how a RF switch is behaving (or do side c…

Does this offer 4x RX and 4 TX channels? Or is it 8x RX channels? Is each individual channel capable of MSPS?

8x ADCs and 2x ADCs @ 153 MSPS -> 4x RX I/Q pairs and 1x TX I/Q pair. The way the math works, you can sample a 153 MHz signal at 153 MSPS using I/Q, or you can use each ADC line to sample at nyquist, and in that case you get 8x RF channels, each sampling 80 MHz at most. All untested, of course.

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#37
post #14
post #13

Earlier quoted context omitted.

Can this device work as a medium/short wave receiver? How low can the frequency go? Like, if one has this device, would it also replace something like RSPdx? What is the compatibility with existing SDR software? It mentions multiple ADCs, can it work as a coherent receiver, similar to kraken?

The Granita board should already work down to 10 MHz. If you need to go lower, I (or someone else) would need to design a custom RFNM daughterboard for low frequencies. You could do direct conversion up to 150 MHz, so it should be a simple task and come with good performances. All existing SDR software should be supported via OsmoSDR. Yes, it should work as a coherent receiver. There are some questions about unmatche…

> If you need to go lower, I (or someone else) would need to design a custom RFNM daughterboard for low frequencies. You could do direct conversion up to 150 MHz, so it should be a simple task and come with good performances.

If do ship oscilloscope daughterboard that you have on your site, would that work also as SW radio?

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#38
post #36

Earlier quoted context omitted.

Does this offer 4x RX and 4 TX channels? Or is it 8x RX channels? Is each individual channel capable of MSPS?

8x ADCs and 2x ADCs @ 153 MSPS -> 4x RX I/Q pairs and 1x TX I/Q pair. The way the math works, you can sample a 153 MHz signal at 153 MSPS using I/Q, or you can use each ADC line to sample at nyquist, and in that case you get 8x RF channels, each sampling 80 MHz at most. All untested, of course.

Once Arctic Semi puts the Granita into normal commercial production, what do you guess the 1ku pricing to be?

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#39
post #37
post #14

Earlier quoted context omitted.

The Granita board should already work down to 10 MHz. If you need to go lower, I (or someone else) would need to design a custom RFNM daughterboard for low frequencies. You could do direct conversion up to 150 MHz, so it should be a simple task and come with good performances. All existing SDR software should be supported via OsmoSDR. Yes, it should work as a coherent receiver. There are some questions about unmatche…

> If you need to go lower, I (or someone else) would need to design a custom RFNM daughterboard for low frequencies. You could do direct conversion up to 150 MHz, so it should be a simple task and come with good performances. If do ship oscilloscope daughterboard that you have on your site, would that work also as SW radio?

You'd probably want something way more sensitive than that, right? Something that goes well into the micro/nanovolts rather than millivolts. But it should be reasonably simple to do. Also the RTL board when designed with a good frontend should be a viable option.

Re: NXP LA9310: A new platform for SDR and the 10-year-old AD9361 RF Transceiver

#40
post #25

Earlier quoted context omitted.

A few practical use cases that are not easily covered by similar platforms: 1) Direction finding thanks to the 8x 153 MSPS ADCs and coherent clocks. 2) Mixed domain analyzer: have one daughterboard act as a RF receiver, and at the same time sample an analogue voltage with the other one. This is a capability reserved to the most expensive of test equipment and lets you analyze how a RF switch is behaving (or do side c…

Does this offer 4x RX and 4 TX channels? Or is it 8x RX channels? Is each individual channel capable of MSPS?

Typo: Is each RX channel capable of 153 MSPS?
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