Depending on their sign, they can also be employed for improving filter phase linearity. They are mostly employed for improving the filter selectivity by producing transmission zeroes. Cross-couplings (couplings between non-adjacent resonators) can be used to modify the filter transfer function.
CoupleFil is a synthesis tool for designing cross-coupled bandpass filters, and will complement and extend CST’s workflows for simulating and optimizing filters.Ĭross-coupled filters are commonly used for high-frequency, high-performance applications where narrow passbands and steep roll-off are required, for example in telecom base stations and satellites.
Computer Simulation Technology (CST®) announces that it has acquired all intellectual property of the CoupleFil software developed by InnoDev GmbH.
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