What are these numbers? When I'm far away and RSSIdBm is -100 and RSSI 25% then the alarms are not triggered.Ĭould anyone explain me what these 45 and 42 mean? How they relate to BetaFlight OSD RSSIdBm or RSSI? Nice.īetaFlight OSD has RSSIdBm and it perfectly corresponds to Crossfire Nano 1RSSI sensor (I guess that it is just reading of that sensor)īetaFlight OSD also has RSSI (in %) which I also understand - 0% is -130dBm (minimum sensitivity for Crossfire Nano) and 100% is something like 0dBm (aka 1mW), this is also described in Crossfire manual:įor example when RSSIdBm is -65 then RSSI is 50% which makes perfect sense to me.īut what I don't understand are the default 45 and 42 RSSI alarms in OpenTX. I understand what is dBm it is simply a projection of mW onto exponential function and thanks to that it maps huge range between 1×1039 W - 0.056 zW to a human readable numbers (-192.5) - 420. Received signal strength indicator (RSSI) hardware security internet of things (IoT) radio frequency (RF) wireless networks.I'm testing limits of my Tango 2 + Crossfire Nano. The high detection accuracy with ultra-low power consumption of our RSSI circuit is favourable for IoT applications including localization, beamforming, hardware security and other low-power applications. A detailed analysis of the RSSI circuit is presented and verified with simulation and measurement results. It has a linear dynamic range of 26dB and exhibits an error of ☐.5dB with a wide bandwidth of 750MHz. The RSSI circuit is implemented in a 65-nm CMOS process and consumes 6nW power. A 5-bit programmable feedback circuit is used to correct detection inaccuracies. The direct conversion is achieved by the repeated switching of a rectifier's output voltage using an ultra-low power comparator. The proposed RSSI circuit is based on a direct conversion of RF to digital code indicating the signal strength. This paper presents a new technique of radio frequency (RF) signal strength detection with a received signal strength indicator (RSSI) circuit which can be deployed in an internet-of-things (IoT) network.
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