shopi Ram
Junior Member level 3
Hi,
i wanted to match a complex impedance antenna using a quarter wave transformer to 50 ohm feed. It has been given in Balanis that
Then what is the impedance of the line btw the quarter wave transformer and antenna i.e, along the length So???
thanks
shobi
i wanted to match a complex impedance antenna using a quarter wave transformer to 50 ohm feed. It has been given in Balanis that
Another technique that can be used to match the antenna to the transmission line is
to use a λ/4 transformer. If the impedance of the antenna is real, the transformer
is attached directly to the load. However if the antenna impedance is complex, the
transformer is placed a distance s0 away from the antenna, as shown in Figure 9.19(b).
The distance s0 is chosen so that the input impedance toward the load at s0 is real and
designated as Rin . To provide a match, the transformer characteristic impedance Z1
should be Z1 =√RinZ0, where Z0 is the characteristic impedance (real) of the input
View attachment untitled.bmp
Then what is the impedance of the line btw the quarter wave transformer and antenna i.e, along the length So???
thanks
shobi
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