Barnard Microsystems Limited (BML) was established in 1986 to
develop software for use in the design of microwave and optoelectronic circuits. BML is an
independent company and welcomes the opportunity to perform designs of optoelectronic and
microwave circuits on a contract basis. We have developed:
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WaveMaker
LAYOUT for use in the layout of PCB metallisation
patterns, semiconductor devices and microwave and optoelectronic
integrated circuits |
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WaveMaker
DESIGN which includes the features of WaveMaker
LAYOUT and additionally supports a linear microwave circuit
simulator and a novel time domain simulator in which S
parameter data can be used |
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WaveMaker
WAVEFORM is a netlist driven time domain simulator
which you can use with a schematic capture front end of your
choice, provided the netlist format is compatible with this
software. |
This software runs on a PC under Microsoft Windows
2000 and XP. The software requires the presence of a LPT or USB dongle for all the commands to be active. You
can download a copy of this software to perform a trial run without the use of a dongle,
but without the presence of a dongle you will be in what we call "BASIC" mode
and will not be able to save the results of your work.
In the last few years we have made use of the
WaveMaker software in the design of multi-layer PCBs. We have
developed:
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A four metal layer (two RO 4350
panels, 0.25 mm thick, metallised both sides) process in which one layer of FR4 PREPREG is
used as an adhesive and separator between the two panels. |
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A six metal layer (three RO 4350
panels, 0.25 mm thick, metallised both sides) process in which a total of two layers of
low loss, 100um thick Rogers PREPREG are used as an adhesive and separator between the
three panels. |
In the microwave and optoelectronic test circuit
and systems area, we have developed low 1/f noise circuits to measure very
low signal levels.
In this area, we offer the following services:
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Design of microwave and
optoelectronic test fixtures and low-loss, multi-layer PCBs. |
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Design of microwave and
optoelectronic test circuits and systems. |
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Design of
microwave and optoelectronic sensor systems. |
A third aspect of our work involves the customisation of any
of the software we have created to suit a particular application. Examples of such work
include:
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Addition of a proprietary GaAs
PHEMT model to our novel waveform time domain simulator. |
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Development of a parameter
extractor for the TOM and Gummel-Poon transistor models. |
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Extension of the number of ports
for the S parameter data supported by the waveform time domain simulator. |
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