RF & Microwave Filter Simulation

This note uses EMWorks to model a tunable RF waveguide filter with 13 tuning screws, simulating S-parameters from 6–7 GHz to study how screw depth affects band-pass response and matching.

This note uses the RF & Microwave module to simulate a 1 GHz lumped RLC bandpass filter on microstrip, combining circuit and 3D models to compute S-parameters, insertion loss, return loss and field distribution.

Design a four-resonator coupled microstrip bandpass filter centered at 2.54 GHz. The note covers model setup, meshing, S-parameter sweep from 2–3 GHz, and evaluation of return loss, insertion loss, and near-field distribution.

Ku-band circular-waveguide dual-mode bandpass filter tuned around 11 GHz. The note covers geometry, PEC and air setup, refined mesh near tuning screws, insertion/return loss, and 3D field plots with section clipping.

Combline bandpass filter using capacitively loaded rods between ground planes, tuned around 880 MHz for GSM. The study sets up an S-parameter simulation with refined meshing near the ports, evaluates 7 MHz bandwidth, return and insertion loss, and uses Smith Chart visualization to confirm matching and performance.

This note models a 5-pole WR75 H-plane iris bandpass filter operating from 11.5 to 12.5 GHz for Ku-band satellite links. S-parameter results from simulation are compared to measured insertion and return loss to confirm filter performance.

This application note examines a microstrip band-stop filter using a quarter-wave open-circuited stub on a Megtron 6 substrate. EMWorks is used to compute S-parameters over 4–16 GHz and predict the maximum temperature under 2 W input power.

This note presents the design and 3D simulation of a compact 100 GHz rectangular waveguide band-pass filter with inductive irises and WR-10 interfaces. Using EMWorks RF & Microwave, the filter’s S-parameters and thermal behavior are evaluated over 94–106 GHz to confirm low loss, sharp rejection, and safe operating temperatures for demanding THz communication links.

This application note analyzes a dielectric loaded rectangular waveguide H-plane filter operating from 10.5 to 11.5 GHz. A finite element S-parameters study is used to evaluate electric and magnetic field distribution, conductor and dielectric losses, and the resulting temperature rise in the cylindrical dielectric posts. The results show a return loss better than 18 dB over a 36% bandwidth and a maximum steady-state temperature of about 57 °C in the dielectric load under 1 W excitation.

A 28 GHz mmWave waveguide band-pass filter with tuning screws is modeled and analyzed using EMWorks. The study reports S-parameters, electric field safety factors at high power, and the effect of screw penetration depth on return and insertion loss. Parametric results quantify how small changes in tuning screw depth shift the filter response within the 27–29 GHz band.