ANALYSIS TYPE / 05

RF Passive Circuit Simulation for Microwave & mmWave Applications

Filters · Couplers · Resonators · S-Parameters

Ansys HFSSAnsys DesignerKeysight ADS

Overview

RF Passive Circuits

RF passive circuit simulation covers the electromagnetic analysis of filters, couplers, power dividers, resonators, and transmission line structures — extracting S-parameters, insertion loss, and spurious response characteristics for microwave and mmWave applications. Accurate EM modelling of planar, waveguide, and 3D RF structures ensures that resonance, coupling, and Q-factor predictions match manufactured performance, reducing the design iteration cycles needed to meet system gain and noise figure budgets.

Industries Served

TelecommunicationsAerospaceDefenseAutomotiveConsumer ElectronicsMedical Devices

Deliverables

S-Parameter (Touchstone) FilesInsertion Loss & Return Loss PlotsGroup Delay CurvesSpurious Response Analysis

Key Aspects

What RF Passive Circuits Involves

01

Filter Design & Synthesis

Designing bandpass, bandstop, and low-pass filters in microstrip, stripline, or waveguide — optimising element values and layout for target passband ripple, return loss, and stopband rejection.

02

Coupler & Splitter Analysis

Computing coupling and isolation of directional couplers, power dividers, and hybrids — validating amplitude and phase balance across the operational bandwidth.

03

Resonator Q-Factor

Accurately predicting the loaded and unloaded Q-factor of cavity, dielectric, and planar resonators — critical for oscillator phase noise and filter insertion loss.

04

Spurious Response Identification

Identifying spurious resonances and harmonics that degrade filter out-of-band rejection — guiding layout modifications to push spurs outside the operating band.

Start Your RF Passive Circuits Project

Connect with our electromagnetics simulation team to discuss the right approach for your application.

Contact Us Today