Category: Knowledge
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How an Attenuator Can Reduce RF Mismatch Effects
A well-matched attenuator can reduce the effect of reflections returning from…
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How to Establish the Zero Reference of a Step Attenuator
Measure the through loss at the zero setting to establish a…
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50-Ohm Versus 75-Ohm RF Terminations
Match the termination’s nominal impedance to the transmission system. Connecting 50-ohm…
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Why DC Resistance Does Not Fully Qualify an RF Load
A DC resistance reading cannot characterize frequency-dependent impedance, parasitic effects or…
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Can a DC Block Solve a Ground Loop?
Only a block that interrupts the relevant conductor can affect that…
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Surge Protector Inspection After a Storm
Inspect the installation and follow the manufacturer’s post-event testing or replacement…
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RF Divider Amplitude Balance Explained
Amplitude balance is the difference between output levels of a divider.…
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RF Resistor Versus Ordinary Resistor
An RF resistor is designed and characterized for high-frequency behavior; an…
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Continuous RF Resistor Power Versus Short-Term Overload
Continuous rating addresses sustained dissipation under stated conditions. Short-term overload requires…
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RF Cable Shielding and Unwanted Coupling
Cable shielding reduces unwanted electromagnetic coupling, but its performance depends on…