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Schmitt trigger oscillator
So I wanted to study RF. To start with the most basic I wanted to build an oscillator. All the places were full of fancy and hard schematics. But to understand the need for good we must try the worst....
View ArticleMatching rf amplifier: calculating complex impedance
I'm building a small 430 MHz 1 W RF amplifier to get some practical knowledge about RF design. Choosing components and making the PCBs was walk in the park. But suddenly my instructor said that I have...
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Matching rf amplifier: Smith chart matching
linSmith with PI matching circuit I have to match 7.799 Ω+1.3158j to 50 Ω load with PI filter at 430 MHz. My advisor's advice - use pen and paper and Smith chart. But since I'm determined not to do...
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Multicode transmitter
Satel multicode transmitter I got my hands on a broken Satel OY multicode transmitter. It is an transmitter used to get information from remote sites - alarm codes, telemetry or sensor values. You can...
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