Vertically Stacked Trisection SIW Filter With Controllable Transmission Zeros
Wei Shen, Hao‐Ran Zhu
Abstract
This letter proposes a novel trisection filter by stacking three substrate-integrated waveguide (SIW) cavities vertically. The trisection topology can be divided into two cascaded second-order topologies in the vertical direction, which can make the filter structure more compact. Moreover, two transmission zeros can be controlled independently by changing the signs of coupling coefficients between the adjacent stacked SIW cavities. Finally, a third-order filter sample is fabricated using printed circuit board (PCB) technology, and the measured S-parameters have good agreement with the simulated ones.
Topics & Concepts
Filter (signal processing)StackingPrinted circuit boardTopology (electrical circuits)Electronic engineeringCoupling (piping)WaveguideTransmission (telecommunications)Substrate (aquarium)Waveguide filterNetwork topologyElectronic circuitMicrostripBand-pass filterFilter designPrototype filterMaterials scienceEngineeringComputer scienceOptoelectronicsPhysicsElectrical engineeringGeologyMetallurgyOceanographyNuclear magnetic resonanceOperating systemMicrowave Engineering and WaveguidesElectromagnetic Compatibility and Noise SuppressionElectromagnetic Simulation and Numerical Methods