In accordance with the technical requirements of the filter,a comprehensive examination of two distinct design methodologies,namely lumped and distributed,was undertaken for low temperature co-fired ceramic(LTCC)filters.A circuit amalgamating lumped and distributed elements was proposed,in which the lumped elements were positioned at both termini and distributed elements was situated centrally.The characteristics of these elements was optimized during the modeling.By utilizing three-dimensional electromagnetic software simulation and manufacturing,the insertion loss within 3 dB over an 11%relative bandwidth in the L-band was realized.Furthermore,the design achieves a return loss surpassing 20 dB,near-end rejection exceeding 60 dB,and an absence of apparent parasitic passband until the X-band.The test results are in good agreement with the circuit simulation and electromagnetic field simulation results.
low temperature co-fired ceramic technologyLTCC filtersdistributed elementslumped elements
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维普
