RF Electronics Chapter 7: RF Filters Page 262
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
Figure 7.85. Measured frequency response of combline filter.
Figure 7.86. Measured frequency response of direct-coupled filter.
Figure 7.87. Measured frequency response of hairpin filter.
EM Simulation
Prior to Cadence AWR DE Version 10, it was very time consuming to prepare a circuit,
like the hairpin filter in figure 7.83, for an EM simulation. In version 10, circuit extraction
was introduced. That allows the simple conversion of the circuit to an EM model for EM
simulation to be carried out. The EM simulation speed improved significantly in version
13, making it now practical to use EM simulations as part of the design process.
The hairpin filter of figure 7.83, was designed and optimised using circuit simulation
only. To minimise the effect of frequency response changes when this circuit is mounted
RF Electronics: Design and Simulation
262 www.cadence.com/go/awr
