Timeline for Do RF amplifiers increase range bidirectionally?
Current License: CC BY-SA 4.0
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| Jan 30, 2022 at 11:37 | comment | added | icyli2 | Just looked at it a bit more, these concepts seem to be called half duplex, duplex... and are quite complex, I'm very new to radio communication and as my first project I'm trying to make very long links over WiFi and LTE but it seems like it'll take way longer to do that than I first imagined. Are there any devices which automatically could control which amplifier is active? So I could hook up a WiFi adapter to one of those, hook up an output and LNA amplifier to those and finally hook up the Yagi-Uda to those? | |
| Jan 30, 2022 at 11:30 | history | edited | Klas-Kenny | CC BY-SA 4.0 |
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| Jan 30, 2022 at 11:28 | comment | added | Klas-Kenny | You could start with any book on wireless systems design. A single Wifi antenna never transmits and receives at the same time. You can't receive and transmit at the same frequency at once, as any received signal will drown in the transmitted signal. I think there are multi-channel WiFi technologies available that can actually do it, but that is using multiple antennas and frequencies. A Whole lot more could be said on that topic, but that would be too much for the comment section on SE. | |
| Jan 30, 2022 at 11:11 | comment | added | icyli2 | Could you possibly guide me to some articles or books who've successfully implemented this before I'm struggling to find information about this subject? Thanks for the answer by the way it's a lot more clearer to me now. When you say the same antenna can't be used for RX and TX simultaneously, does this mean that radio communication never sends and receives at the same time? Even with WiFi for example, this never ever happens at the same time? Why is the design like this, if you'd be able to receive and send simultaneously wouldn't communication be a lot faster? | |
| Jan 30, 2022 at 11:06 | comment | added | Klas-Kenny | I'm sure there are combined devices out there made for the task. It is not quite as simple as just connecting a power amp and an LNA to the antenna, as there must be some controlling of which amp is active etc. as they can't both always be active when the same antenna is used for both RX and TX. | |
| Jan 30, 2022 at 10:58 | comment | added | icyli2 | Are there any RF amplifiers which are bidirectional, they can both receive and transmit? Or would you recommend I get both an LNA and an output power amplifier and hook them up to an antenna? | |
| Jan 30, 2022 at 10:38 | history | answered | Klas-Kenny | CC BY-SA 4.0 |