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For example, 10-j24Ω would be entered (including the brackets) as (10-24i). When
doing the calculations on this page I used memory functions to store intermediate
operations and recall them for later use.
Figure 41-23 A parallel LCR circuit
This shows us that the circuit diagram, of Figure 41-23, can be reduced to a single
resistance of 153.8 ohms and a series capacitance with a reactance of 360.7 ohms.
HOW DOES AN ANTENNA TUNER WORK?
The purpose of an antenna tuner is to match impedances between a source and a
load. The source could be a radio transmitter and the load either the antenna or the
input of a transmission line. Matching source to load ensures maximum power
transfer to the load. Antenna tuners do this by using a combination of adjustable
capacitors and inductors. The following problem (Figure 41-24) was requested by a
student of RES. The request was to prove using complex math that the "L" high-pass
filter matches the complex load impedance of 28j208Ω to a 50Ω source impedance.
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