Time with Simulation
has become a
common design tool.
Thanks to today’s computers, designs that only a few years ago would
have been impractical to analyze can now be quickly characterized
without a supercomputer. Laborious computations, guesswork and
extensive prototyping are no longer needed. Whether we like to
tinker or not, fast-executing and accurate computer models
can decrease the number of hardware iterations thereby reducing
development cost and time.
Electrical engineers can now simulate the performance and predict the
behavior of complex distributed element circuits, such as printed
(and their @!$#%^
parasitics!) at microwave
frequencies. Even true
3-dimensional structures such as antennae or waveguide components fall
within the purview of computer simulation.
CustomRF specializes in 3-dimensional electromagnetic field simulations
of just such structures. Here is a simple example.
Bandpass Filter Model
(CST Microwave Studio)
This interdigital bandpass filter consists of coupled transmission
lines. To achieve the right response, each line must have the correct
length, width and placement. Design equations are a good
start, but fine-tuning is still required. In the past we would build a
board, measure, scrape off a bit of trace, measure, build another
board, measure ... sound familiar?
At CustomRF, we make a model, simulate, make a minor change, simulate,
make another change, simulate, ... much easier! Or we parametrize the
model and let the computer find and deliver the dimensions to us when
finished. With simulation it is possible to get much closer on the
first try. In our example above, when we simulated the filter's
S-Parameters and compared the results to VNA measurements, we obtained
More examples can be found on the CustomRF
Simulating the design before building
- Saves prototyping
- Saves time
- Saves money
- Looks good in a design report
The next time you need to develop distributed microwave circuits, or
other circuits, consider simulation. If you do not have the tools and
know-how ... there's always CustomRF.
CustomRF was founded in 2003. Our customers range from small to mid
sized companies, early stage to well established, whom we have helped
design new products and improve and trouble shoot existing ones.
Current and past customers include
- AES Intellinet
- C & C Technologies
- Finish Line Product Development
- Maguffin Microwave
- Philips Semiconductor
If you do not wish to receive any further
newsletters from CustomRF, send an Email to
CustomRF | 28 Lowell Drive |
Stow | MA |
01775 | 978.637.2070
Bachmann is now the sole owner of CustomRF. He has more
than 20 years of technical, marketing and management
experience in the analog, RF and microwave arena. His expertise
is in concept development, systems architecture and analysis,
and simulation and hardware design. Before founding CustomRF he was
employed in engineering, marketing and management functions at Philips
Semiconductor, Systemonic, Raytheon, Advanced TechCom and GTE. He
received his Diploma in Electrical Engineering from the ETH (Federal
Institute of Technology), Zürich, Switzerland in 1986.