RF Electronics Chapter4: Transmission Line Transformers and Hybrids Page 104
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
Figure 4.67 Stripline Marchand Balun magnitude response.
Figure 4.67 shows the magnitude frequency response of the Stripline Marchand Balun
and figure 4.68 shows the phase response. Comparing figures 4.67 and 4.68 with figures
4.63 and 4.64, show that the Stripline Marchand Balun has a much better performance
than the Microstrip Lange Marchand Balun.
Figure 4.68 Stripline Marchand Balun phase response.
Parallel Line Balun Realisation
As a further comparison, the Parallel Line Balun of figure 4.55 is realised using Stripline
couplers. Figure 4.69 shows the resulting circuit diagram. For a good phase balance, the
shorted line SL1 needs to be added. For this Balun, the width of the lines was also fixed
at 1 mm. The substrate configuration is the same as for the Stripline Marchand Balun.
RF Electronics: Design and Simulation
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