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news digest ♦ RF Electronics good,” said Norbert Grote.


Mesuro again demonstrates first pass design success


Mesuro has shown how active harmonic load-pull and waveform engineering can produce a multi- harmonically matched MMIC PA and provide MMIC device data in one step.


Mesuro has again proved how its waveform engineering approach to power amplifier (PA) design yields major reductions in design costs and improves product time to market, through ‘right-first- time’ design.


Using a commercially available GaAs pHEMT, TQPED, a 0.5mm commercial foundry process from TriQuint Semiconductor, with data from characterisation performed on Mesuro’s active harmonic load pull solution, the completed design produced a first pass MMIC PA with an efficiency performance of >80%.


The use of the original device measurement data meant that the designer was able to produce the design without the need for a non-linear I-Q device model. For this reason it is often necessary for the designer to rely on experimental investigations. This build and test approach is often frustrating since it can be very time consuming and does not usually allow the flexibility or the quantity of investigations to be undertaken.


The design process allowed the designer to understand accurately how component sensitivities would affect the proposed performance of the amplifier at the investigation phase prior to any expensive fabrication being undertaken. This meant that the designer could better understand the trade- offs that could be made in the impedance matches to increase the probability of a first time success after fabrication.


The ability to get close to the optimum performance first time provides designers the opportunity to hugely reduce design costs, by reducing the number of design iterations required and allows them to get a product to market quicker.


126 www.compoundsemiconductor.net October 2011


Image 2 : Layout of the 900 MHz, class-F, MMIC power amplifier


TriQuint and Agilent unite to advance wireless design flow


The firms intend to enhance PDKs, by providing a fully integrated front-to-back product design flow with customised DRC and LVS solutions.


TriQuint Semiconductor and Agilent Technologies have announced results for building next-generation RF solutions.


This includes enhanced TriQuint process design kits with support for Agilent’s Advanced Design System 2011 EDA software and the development of an ADS RF Module PDK for TriQuint’s RFIC/MMIC and RF Module integrated design flow.


The upgraded ADS Foundry PDKs enable both TriQuint’s foundry customers and in-house design engineers to take advantage of new capabilities in ADS 2011. Specifically, the PDKs provide a fully


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