RF Measurement Laboratory RF Measurement Laboratory

Adaptive Wireless SystemsAdaptive Wireless Systems

Dept. of Electronic Eng.Dept. of Electronic Eng.

Cork Institute of TechnologyCork Institute of Technologyaws@cit.ie

Sample ApplicationsSample Applications

How shielding worksHow shielding works

RF Measurement EquipmentRF Measurement Equipment

Introduction:Introduction:

Used to provide electromagnetic shielded environment for RF/Microwave measurements to be conducted without unwanted interference.

Why?Why?

1) Exclude unwanted electromagnetic radiation or signals in order to allow sensitive electrical measurements to be carried out. 2) To contain radiating signals which can disrupt neighbouring equipment.

Comparsion of simulation & Comparsion of simulation & measurementsmeasurements

SoftwareSoftware

ApplicationsApplications

•HP VEE Pro 6- Data acquisition

•Designer-RF circuit simulator

•HSPICE-Mixed signal Circuit Simulator

•Ensemble- 2.5D EM simulator

•HFSS- 3D EM simulator

Reflecting &Absorbing

radiation

Shielding reduces signals to levels where they no longer interfere with measurements or cannot be received.

• Agilent 8714ES Vector Network Analyser• Agilent 86100 Infinium Wideband Oscilloscope• Time Domain Reflectometry Module• Anritsu Spectrum Analyser• Agilent ESG Signal Generator

Characterisation of various IC packages and interconnects.The design of an ultra wideband transceiver.Miniaturisation of transceivers.Creation of IBIS models.

This equipment and software has been successfully used to date in a range of RF applications:

To evaluate and model RF passive chip components to size 0402 and embedded passives such as spiral inductors.Characterisation of RF transistors for use in amplifiers.Simulation and Analysis of RF Filters.

S-parameter response of microstrip interconnect extracted using:

• HFSS Electromagnetic Simulator• Measurement using VNA

Measurement

HFSS™

S11 (Return Loss) S21 (Insertion Loss)

MCM-L Design of a miniaturised transceiver

developed using measurement and

simulation

Design of a Waveguide Tee

junction using HFSS