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Results tagged with rf
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user 191975
Short for Radio Frequency, i.e. frequencies at which radiation (intentional or not) plays a role. Typically associated with wireless communications, but also relevant for high-speed PCB design.
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Optimal gain for RF pulse detection in RTLSDR
I'm trying to optimize the SNR of low-power RF pulses (from wildlife telemetry tags @166Mhz, unmodulated, a few DBs above noise floor) as they go into an RTLSDR. … The detection performs windowed FFTs and then convolves each frequency with a 2.5ms square pulse profile, i.e. looking for 2.5ms long RF pulses at each frequency. …
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answer
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understanding the recommended impedance match for a SAW filter
I'm trying to understand the recommended impedance match for a TA0168A SAW filter input. The datasheet is https://www.rfmw.com/datasheets/taisaw/ta0168a%20_rev.2.0_.pdf
In my first circuit I'm trying …
- 312
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Are SX1276 DIOx pins necessary?
I have seen a desensitization of RX due to continuous polling via SPI. So my rule is not to touch the chip if I can help it while it's in RX mode. Your mileage may vary depending on board design, SPI …
- 312
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Unclear RF Schematic Reference for Power Amplifier Connection and Matching Network Properties
docs that have become available since your wrote your question:
ST has published a pretty good app note AN5457 on the matching network design: https://www.st.com/resource/en/application_note/dm00690797-rf-matching-network-design-guide-for-stm32wl-series-stmicroelectronics.pdf …
- 312
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How do the sx1276 radio AFC, AGC, RSSI, FEI work in FSK mode (RX)?
The primary reason to bother is that AFC and AGC are generally necessary because they improve reception but they can cause receiver lock-up. This lock-up has been a "feature" of Semtech's FSK radios g …
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How do the sx1276 radio AFC, AGC, RSSI, FEI work in FSK mode (RX)?
The sx1276 radio (https://www.semtech.fr/products/wireless-rf/lora-connect/sx1276) is commonly used in LoRA mode but it also has an FSK mode, this Q is about the FSK mode used in packet mode. …
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