by minicircuitsadmin | Mar 20, 2015 | Engineering Resources, Limiters, Q/A
Q. Please describe the spectrum at the output of a limiter. A. Since a limiter acts in a saturated mode, its output contains many harmonics of the applied input signal. The harmonic content is a function of the bias current and applied power level. Figure 1 Q. Will a...
by minicircuitsadmin | Mar 14, 2015 | Engineering Resources, Filters, Q/A
Q. Is a filter a reciprocal device? Is it possible to interchange between input and output ports? A. Yes. Filter response is unaffected as long as the source and load impedances are the specified value. Q. I intend to use an MCL 50Ω filter in a 75Ω system. What might...
by minicircuitsadmin | Mar 6, 2015 | Engineering Resources, Frequency Doublers, Q/A
Q. How does the return loss at the output of a frequency doubler vary as input power changes? A. Return loss is influenced by how hard the diodes are driven in their conducting state. As input power to the frequency doubler is reduced, the impedance will increase. It...
by minicircuitsadmin | Aug 13, 2008 | Engineering Resources, Q/A, Switches
Q. What is the difference between an absorptive and a reflective switch? A. In a reflective switch, the impedance of the port that is OFF will not be 50Ω and will have a very high VSWR. On the other hand, an absorptive switch will have a good VSWR on each port...
by minicircuitsadmin | Jul 23, 2008 | Engineering Resources, Frequency Mixers, Q/A
Q. How critical is LO level in a mixer application? A. The purpose of the LO signal is to switch the mixer diodes on and off. Mixer manufacturers select fixed LO levels so they can test and specify at each particular level. In practice, however, LO drive can vary with...
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