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Multiple Realizations of Cascaded Filters

This model shows three ways to use SimRF™ Equivalent Baseband library blocks and RF Toolbox™ objects to create filters.

Example Model

Fig. 1 Example model of multiple realizations of cascaded filters:

Simulation Results

The first method creates a filter using transmission line blocks from the Transmission Lines sublibrary and a LC Bandpass Filter block from the Ladder Filters sublibrary. Fig. 2 shows its frequency response ranging from 70 MHz (-5.0 MHz) to 80 MHz (5.0 MHz).

Fig. 2 Frequency response of the first filter:

The second method creates a filter using three General Circuit Element blocks and three RF circuit objects. Fig. 3 shows its frequency response ranging from 70 MHz (-5.0 MHz) to 80 MHz (5.0 MHz).

Fig. 3 Frequency response of the second filter:

The third method creates a filter using a General Circuit Element block and an RF circuit object, which represents a cascade of three RF circuit objects. Fig. 4 shows its frequency response ranging from 70 MHz (-5.0 MHz) to 80 MHz (5.0 MHz).

Fig. 4 Frequency response of the third filter:

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