Benchmark Filter Designs Demonstrate Improved RF Design Flow
[2008-7-16]
Tag : High-Pass Filter
Three benchmark filter circuits are introduced in this note thatdemonstrate how the Modelithics CLR Library can predict performanceprecisely, improving design flow efficiency.
Three filter circuits are demonstrated:
1) 900 MHz high-pass
2) 2.2 GHz low-pass
3) 5.4 GHz band-pass
These filters were designed, fabricated and measured. Excellentagreement was obtained between measurement of the final product andsimulations using Modelithics CLR Library models. The CLR Libraryconsists of Global Models whose format and advantages are welldescribed in a separate application note. This note discusses thedesign process, each simulation and optimization step, and measuredand simulated results for each filter. The design methods followedfor these filters, which all demonstrate "close-the-loop"measurement and simulation results in one pass, can easily beemulated for filter, matching, and bias network design in yourenvironment. The availability of complete hardware and simulationkits for these filters allows interested designers the opportunityto thoroughly understand how the simulations are setup as well asmake their own measurements of the presented filter circuits. 1 Design Process Figure 1 shows a design process example for the filter benchmarkcircuits.
Three benchmark filter circuits are introduced in this note thatdemonstrate how the Modelithics CLR Library can predict performanceprecisely, improving design flow efficiency.
Three filter circuits are demonstrated:
1) 900 MHz high-pass
2) 2.2 GHz low-pass
3) 5.4 GHz band-pass
These filters were designed, fabricated and measured. Excellentagreement was obtained between measurement of the final product andsimulations using Modelithics CLR Library models. The CLR Libraryconsists of Global Models whose format and advantages are welldescribed in a separate application note. This note discusses thedesign process, each simulation and optimization step, and measuredand simulated results for each filter. The design methods followedfor these filters, which all demonstrate "close-the-loop"measurement and simulation results in one pass, can easily beemulated for filter, matching, and bias network design in yourenvironment. The availability of complete hardware and simulationkits for these filters allows interested designers the opportunityto thoroughly understand how the simulations are setup as well asmake their own measurements of the presented filter circuits. 1 Design Process Figure 1 shows a design process example for the filter benchmarkcircuits.
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