Testimonials on the Modelithics® Library Models
Comments from our customers and partners

I have been using Modelithics CLR libraries for several years, and have come to rely on them for all my simulation work. The models are accurate, scalable, and easy to use. A big benefit is that they save time. For example, the alternative to get accurate models is to use S-parameter measurement files. But this technique does not work with Monte Carlo, Yield, or Optimization. The scalable Modelithics models do support these analyses. The accuracy saves lab time; I find that the final values of circuit components, which results from lab testing, are almost always within one standard value of the simulation results.
Gordon Mapes, Principal RF Engineer,   Sirius Xm Satellite Radio
We recently tested the first LNA circuits that were designed using the most recent device models developed Modelithics for our GaN devices, and we got exceptionally good agreement between measured and simulated performance. Our customer was very pleased with the results. This is the first time in my career that a design was almost dead on in a first design/fab iteration for a completely new device process in which we never made a circuit before. Please give my Kudos to your team.
Senior Design Engineer,   US GaN foundry
Once I started using the Modelithics RF Passive Components Library models it became an addiction. The vast selection of RF passive components models, accurate and scalable across substrates and soldering pads, provides for me a substantial chunk of the pieces of the puzzle for a first-time-right design process. I have also used some of the Modelithics non-linear transistor models and they have also proved to be accurate for achieving first-time-right designs.
Ivan Boshnakov, R&D Manager,   Principal RF Design Engineer , ETL Systems Ltd
We have worked with Modelithics for a few years now and have been very pleased with their work as well as our collaboration as a Strategic Modelithics Vendor Partner. Modelithics always delivers high quality and accurate data and models that expand on our own product data for the benefit of our customers.
Brian Goodhue,   Vice President - Engineering, Piconics, Inc.
We recently had an excellent experience working with Modelithics on a project to characterize and model pHEMT devices. The model provided exceeded our expectations in terms of non-linear prediction against load-pull data and robustness of convergence in our Simulator. It was a nice bonus to receive it well ahead of schedule as well. We would readily recommend Modelithics and plan to use their services again in the future when additional needs arise.
Ryan Pratt,   Founder, CEO Guerrilla RF
Iíve been using Modelithics since 2005 and have developed a trust that these models will get me on target in the first spin. In 2015, now working at a new company, the Modelithicsí trial period enabled me to repeatedly demonstrate the value of these models in enabling high frequency simulations to predict reality and drastically reduce design risk. My new employer was so impressed they bought 3 ďCOMPLETEĒ licenses. Iím so very glad to continue using these models. It feels like youíre driving blind without them.
Michael S. (Senior RF Engineer),   G3 Technologies, Inc.
Inmetís partnership with Modelithics continues to provide our customer base access to the information needed to speed up their design process and select the appropriate devices for integration into their circuit designs. Providing S-Parameter data as well as equivalent circuit models for some of our commonly used chip resistors and attenuators has generated an easily accessible library intended to ultimately lower the cost and time associated with initial circuit design efforts. Looking forward, we are excited about the new release of a temperature dependent equivalent circuit model for our recently introduced family of temperature variable chip attenuators, which will allow customers to simulate RF performance over temperature as well as frequency.
Craig Lindberg,   VP/General Manager of API Inmet, Inc.
We just finalized the design of several lumped element filters in our new receiver design. Reaching that milestone was a significant achievement in our design effort and Modelithics was largely responsible for that. The models allowed me to come very close to the final design on the first try.
Jeff Philips,   TCI SPX Corporation
All the models Iíve used are working very well. When comparing with my own models, much simpler of course, I can see that even when there are only subtle improvements I can trust much more my designs by using the Modelithics models.
Ivan Boshnakov, R&D Manager,   Amplifier Technology Ltd - a Vislink Company
I was pleased that your Noise parameters were dead on. They were as far as I could tell just right. They matched our model but it took you a day and it took us a month.
PhD Sr. Principal Engineer,    Major US Defense Contractor
I have used Modelithics models for almost 10 years when designing high power amplifiers operating from low MHz to 6GHz and spanning power levels from 5W to 1KW and have had great success in the predicted performance that these models offer over standard s-parameter models. These models have aided in our single iteration success when moving from the paper design to the bench.
Tom Kelly, Principle Engineer,   NXP
We have used your CLR library in three different power amplifier design projects in the last year. All of the designs have been very successful and very good agreement was achieved between simulations and measurements.
Mustafa ÷zen, Phd Student,   Chalmers University of Technology
Your team is always on my list when I think of quality measurements and models.
Mike Lyons,   Senior MMIC Design Engineer, Anokiwave
The Modelithics models did help achieve first pass success. The 100W Pin Diode Switch worked the first time!
Doug Dougas,   BAE Systems
The scalable footprints in Modelithics' libraries are very useful, ensuring I can snap my artwork to a grid for EM simulation.
Louis Brown,   Honeywell
I recently used the ATC 600 series 0402 library, and I was impressed with the results. I designed a 2-18 GHz diplexer that has a crossover at 6 GHz, made a crude prototype PCB, and the measured results were very close to the simulation, which verifies the model, at least for that capacitor is very accurate.
Chris Zuhlke,   Aeronix Corporation
I have watched Modelithics grow from inception to become a trusted source of high quality models and data for design use. We are pleased to launch this collaboration for the benefit of our customers.
Harvey Kaylie,   Founder and President, Mini-Circuits
I have been using the Modelithics libraries for Genesys for a few years. I started out with just a couple of libraries, and gradually expanded to the full Genesys library suite for active and passive devices after seeing how well the measured performance consistently matched the simulated performance. I do a lot of circuit design, development, and prototyping in my consulting practice in the frequency range of a couple of MHz to about 22 GHz. I have used the Modelithics in everything from active LNA's and power amplifiers in the MHz and GHz range, to such critical circuits as band pass filters in the frequency range of about 70 MHz to about 1 GHz. I have even designed a 2 stage power splitter that worked from 8 to 20 GHz using the Modelithics resistor models. In every case, the measured data was almost exactly like the simulated data. If I had to change a value of a capacitor to get a "perfect" match from simulation to measurement on a filter, it was rarely by more than 1 pf, and usually no changes were necessary. What a tremendous time saver!
Ed Troy,   Aerospace Consulting
I do a lot of RF tuning simulation in the 2-3 GHz range, use the Modelithics CLR models right out of the box, and have had impressive success. We have already been able to use the results to help customers, including major wireless component suppliers, develop a systematic method for solving difficult multi-band matching problems. They in turn are quite pleased. When I spend more time with the user manual and application notes, I suspect the results will be even more amazing!
Don Lee, Staff Engineer,   Advantest
I have been using Modelithics models to design lumped element circuits such as filters and bias networks in MWO for several years with first pass success. The increasing variety of component families offered in the Modelithics libraries makes part selection easier as well. Rather than dig through lab stock or spend time searching the web for parts, I find that I usually end up designing with components that are readily available in our Modelithics libraries. I'd like to see vendors offer more such models for their parts instead of basic SnP files that don't seem to work in most cases.
Tamir Moran, Principal Hardware Engineer,   National Instruments
I use Modelithics extensively, it has been crucial to minimizing iterations. The amount of BOM cost I have been able to save for clients by designing rather than buying blocks makes the library worth every penny. I wish more vendors would just get Modelithics to create models to support all the key software packages, I gravitate towards devices that are in the Modelithics Library.
Lance Lascari,   RFdude.com LLC
Even though the passive models that I utilize in my simulations include parasitic C and L (or s-parameter models), the simulations on a 5GHz circuit still did not match my measured performance. When I utilized the Modelithics ATC capacitor models the simulated performance correctly simulated a 5dB rolloff that I measured at the upper end of the band. I am very impressed!
Ted Longshore, Sr. RF Design Engineer,   Quasonix
I have had modelithics libraries as part of my RF Toolbox for a number of years. I very much enjoy being able to switch off my brain when it comes to the non ideal nature of passive components in different environments and am comfortable pushing the limits knowing that running out of Q at frequency or a nasty resonance will show up in my simulations. This affords me the luxury of first pass successes and being able to focus wholly on the particular design challenge or problem to be solved. Many thanks to the helpful people at Modelithics.
Phil Jobson,   Phil Jobson Consulting (Consultant to Pocket Radar)
I recently completed a really good exercise in obtaining a 'Special Order' PIN diode model from Modelithics. The model gave me much better confidence in re-working a prior design and greatly reduced the risk in our program
Christopher Bye,   BAE Systems
The Modelithics libraries allows us to achieve first-pass success for GHz designs on printed circuit boards
Justin Magers,   National Instruments
I have been using the modelithics CLR and NLT libraries in the last 6 months for my Ph.D. research, I find these 2 libraries very interesting and have very good models compared to models provided by the vendors themselves. I have designed class AB power amplifiers at 900 MHz and at 2.14 GHz, using the modelithics model of Sirenza/RFMD Si LDMOS 4 transistor (SLD-1083CZ), the model performance was very good in small-signal and large-signal. Based on the above testing, I have designed a Doherty power amplifier(DPA) for the GSM900 band, which showed very good results in terms of efficiency at backoff power, the results of this DPA design were accepted for publication at the German microwave conference in Munich.
See Khaled Bathich's Presentation
Khaled Bathich,   Technische Universitaet Berlin (Berlin Institute of Technology)
The CLR Library's advanced and highly scalable models for surface mount components is adding to design confidence and helping TriQuint's improved design flow for miniaturized front-end models.
Paul Litzenberg,   Foundry Engineering Director for TriQuint
I just ran DC through the NEC 3 Watt device, my measured data compared to Model simulated data,--> Simulated data at 2.255(Vgate) Idrain=1.085A Measured data at 2.255Vg Drain current 1.085 --> They hit exactly !!!! No bull --> Just wanted to let you models know !!! Awesome job !!!!!!
Dean Pizio, Sr. RF Engineer,   Engenium Technologies, Corp
Raytheon SAS has been using Modelithics for the last few years to develop GaN and GaAs nonlinear models for our various HPA projects. We are extremely happy with the results and the accuracy of the models provided by Modelithics
Dr. Reza Tayrani, Senior Engineering Fellow,   Raytheon
To verify our module designs prior to tapeout, we reference your inductor and capacitor models to our module substrate, SAW device and LNA models. We've had very good luck with this approach and the use of your models has enabled us to close the loop on the simulation analysis. The simulation results allow us to optimize each of the design components and assemble a product that correlates very well with expected performance.
Russ McKinney,   RFMD
While using your models the measured and simulated performance was remarkably similar on the filters I modeled and fabricated - far different from my original simulations. You saved me many, many hours as well as my reputation!
Ted Goodman, President,   West Friendship Engineering
Recently completed a comparison simulated and measured results of the first 2 test boards of a 1.8-2GHz Class A amp stage designed using the Modelithics FLL120MK model. No tuning was done. The measured P1dB and OIP3 were startlingly on top of the simulations. The design was done using Microwave Office and MultiMatch Amplifier Synthesis Wizard
Ivan Boshnakov,   Aerial Facilities Limited
We had some very good results recently that we wanted to share with you. I am attaching a paper draft for you on a hybrid lumped-microstrip multiplexer whose design and simulation used the Modelithics CLR library extensively. As we state in the paper, the Modelithics models made a first-pass design success possible.
Chris Galbraith,   University of Michigan
I know you probably appreciate customer feedback about your models so after finishing my filter design work using Modelithics models, I put together a test report showing the simulated and measured response. I did not bother to cal out the coaxial connectors so there is a little extra loss and delay, but the comparison came out very good. I am very impressed with the results!
Greg Ramon, Senior RF Engineer,   QinetiQ, Inc.
Modelithics makes me look good when a vital RF or microwave circuit simulation must be spot-on or else! For example, I recently completed two GHz bandpass military filter designs that produced first pass measured-to-modeled agreement that was absolutely exceptional -- no tuning of either circuit was required -- and would simply not have been possible using S-parameter (much less ideal) models.
Cotter W. Sayre, Senior RF Engineer,   Radix Technologies
I want to personally thank you and your team for the excellent job done on this pHEMT modeling project. I also appreciate the time your staff took above and beyond to get the job done, also I personally learned a great deal during this process. I hope that we can work together again in the future. Thanks again.
David Caleb,   US Monolithics
Pad dimension inputs? This is a wonderful bonus -- I had always thought this would be our next "new and improved" version -- and it certainly is appreciated.
Bob Grossbach,   American Technical Ceramics
.......... This has been a frustrating problem for me--creating power amplifier load networks. The problem is to transform a 50-ohm load to 2-3 ohms, or even less, at the chip. EVERYTHING matters; even a tenth of a nH at 2 GHz is huge, compared to the 2 or 3-ohm real part. Then, there are the losses in the caps and inductors, which have a significant effect on efficiency and output power. Good chip modeling gives us a chance of getting a handle on these things.

...By the way, I have used the passive chip-component library for making a WCDMA power amplifier test board. I put one together this week, and > discovered that it was dead on; no need even to tweak it. I'm seeing 65-70% peak dc efficiencies at about 28 dBm, 1.85 GHz amp. Exactly what was expected. Same story on two more I've tested. This is very impressive!

Dr. Steve Maas,   Nonlinear Technologies, Inc.
I've been very pleased with the use of the Modelithics CLR Library, finding it much more cost effective than performing my own TRL calibrated measurements of surface mount components. I've had excellent "First-pass" design success with using the library for optimization of part values for circuits such as LNA matching networks and have decided to base all my future designs on parts that are represented with accurate models in the Modelithics Library.
Robin Roddewig, Senior Engineer,   GCI
During Design I used [Modelithics Library models ] every day on the block converter project. I also used this to design up to 10 GHz lowpass, highpass, lowpass/highpass combos, bandstop filters, and I never needed to tweak. Got it on first design.
Rick Barber,   Anritsu Company
The Modelithics CLR library has greatly increased my confidence in ADS simulations of lumped element filters and matching networks. First or second pass success is now routine. The convenience and ease of use alone is worth the cost. Thanks.
Mark Smith,   Airnet Communications