Joshi
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Why is the dynamic input impedance of an IF amplifier greatly affected by loading and detuning of it's tank circuit when a large resistor is placed in parallel across it, like a large resistive load. And why is it better to use a rf amplifier in this situation?
Sleeve Antenna
in Theory articles
Posted
Why when sleeve antennas are used for high frequencies they are superior to single wire or regular whip antennas in both vertical pattern and impedance characteristics. I don't understand when it states the impedance characteristics of a sleeve Antenna can attain satisfactory standing wave ratios over a wider range and radiation at low angles is much greater than a whip?