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    CST offers a wide range of EM simulation software to address design challenges across the electromagnetic spectrum, from static and low frequency to microwave and RF, for a range of applications, including EDA & electronics, EMC & EMI and charged particle dynamics.

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    CST STUDIO SUITE® is being demonstrated at trade shows and workshops all over the world. Take a look at the list of conferences and exhibitions CST will be attending and get further information regarding CST workshops, eSeminars and training days.

  • TrainingsRegular training courses are held in CST's offices in Asia, Europe, and North America. Please check our trainings section for detail of trainings in all over the globe. Advance registration is normally required.

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    A MyCST account may facilitate your access to many of the offerings on the CST website, for example the registration for eSeminars and the watching of eSeminars recordings, setting email preferences, and there is more functionality to come. It is required to participate in workshops and trainings.

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  • How to request a Trial License ?

    Get your license in only three steps:

    1. Fill in the required fields in the contact form on the right and click "Send Us Your Request".

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  • Student Edition

    Student Edition The CST STUDIO SUITE® Student Edition has been developed with the aim of introducing you to the world of electromagnetic simulation, making Maxwell’s equations easier to understand than ever. With this edition you have, bar some restrictions, access to our powerful visualization engine and some of the most advanced solvers of CST STUDIO SUITE.

    Student Edition

CST – Computer Simulation Technology

Title:
ON-BODY CHARACTERIZATION OF DUAL-BAND ALL-TEXTILE PIFAs
Author(s):
P. J. Soh, S. J. Boyes, G. A. E. Vandenbosch, Y. Huang, S. L. Ooi
Source:
Progress In Electromagnetics Research
Vol./Issue/Date:
Volume: 129, 11 July 2012
Year:
2012
Page(s):
517 - 539
Abstract:
Antenna performance in terms of re°ection coe±cient, bandwidth, radiation pattern and e±ciency is expected to be severely in°uenced during on-body deployment. Besides addressing the need for a systematic on-body evaluation procedure, this work presents an in-depth discussion on the measured degradation relative to free space operation. Considering a practical deployment scenario, the two antenna designs are ¯rst optimized in proximity of a human- emulating box using a commercial simulator. ShieldIt textile is chosen to build the antenna's conductive components, and this prototype is then benchmarked against another similarly-dimensioned prototype constructed using copper foil. For each material, two dual-band prototypes are fabricated, one resonating at 2.45 GHz and 5.2 GHz, and the other at 2.45 GHz and 5.8 GHz. Two realistic on-body deployment locations are chosen to be investigated, on the chest and back, considering two antenna orientations | one radiating away from the user, and the other radiating along the body. Free space and on-body re°ection coe±cient, bandwidth and radiation pattern are evaluated for each prototype in an anechoic chamber, while a reverberation chamber is utilized to determine their e±ciency. All measurements were carried out using the same human volunteer. Evaluations show that coupling distance and conductivity are the main factors in determining e±ciency rather than on-body location, given that evaluations are carried out while the antenna keeps its planar form.
Document:

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