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Published Articles

Please use the links below to see the technical papers PRFI has presented at seminars and peer-reviewed conference, and those published in industry journals:

Doherty Power Amplifiers Move to mmWave – Article published in Microwave Journal by Robert Smith et al., September 2020

4 Channel SMT packaged PA for 5G (PDF) – Paper presented by Liam Devlin at the ARMMS conference, November 2019.

Low Loss, High Isolation mmWave Switch MMICs – Article published in MPD by Graham Pearson et al, July 2019.

The Design of a Plastic-Packaged PA for 28-GHz 5G – Paper published in Microwaves & RF by Stuart Glynn et al, June 2019.

An Adaptable GaN Power Amplifier for S-Band Radar – Paper published in Microwave Journal by Robert Smith & Liam Devlin et al, June 2019.

A Fully Integrated 3.5GHz Single Chip GaN Doherty PA for sub-6GHz 5G – Paper presented by Robert Smith at the ARMMS conference, April 2019.

A Dual Channel SMT Packaged PA for 26GHz 5G – Paper presented by Liam Devlin at the ARMMS conference, November 2018.

The Design and Evaluation of a Plastic Packaged Single-Chip FEM for 28GHz 5G – Paper presented by Liam Devlin at the ARMMS conference, April 2018.

Cost-Effective Hybrid Input-Matched GaN Transistor for S-band Radar Applications – Paper presented by Robert Smith at the ARMMS conference, April 2018.

The Design of a Multi-Chip SMT Front-End Module for the 26 GHz 5G Pioneer Band – Paper published in the Nov./Dec. 2017 edition of MWEE.

The Design of a Dual-Band PA for mm-Wave 5G Applications – Paper presented by Liam Devlin at the ARMMS conference, Nov. 2017.

Broadband L-band 160W GaN PA SMT Packaged Transistor (QPD1013) – Paper presented by Rob Smith at the IET colloquium on Active & Passive RF devices, May 2017.

The Design of High Performance L-band GaN PAs Using Commercially Available Discrete Transistors – Paper presented by Rob Smith at the ARMMS conference, Nov. 2016.

An X-band GaN PA MMIC for Phased Array Radar Applications – Paper presented by Liam Devlin at the ARMMS conference, Nov. 2016.

A 28GHz, 4-channel Phase Adjustable Power Amplifier IC for 5G front-ends – Paper presented by Liam Devlin at the ARMMS conference, April 2015.

Mm-wave SiGe IC Design: A Technology Overview – Article in Semiconductor Today Magazine, May/June 2014.

The Future of MM-Wave Packaging – Paper presented by Liam Devlin at the ARMMS conference, April 2014.

The Future of mm-wave Packaging – Article by Liam Devlin in Microwave Journal, February 2014.

A Guide to the Design of Laminate PCBs at Microwave Frequencies – Paper presented by Liam Devlin at the ARMMS conference, November 2013.

A Low Cost V-band Amplifier MMIC Covering 54 to 67GHz – Paper presented by Liam Devlin at the ARMMS conference, November 2013.

Designing Cost Competitive E-band Radio Front-ends – Paper presented by Liam Devlin at the ARMMS conference, April 2013.

A guide to SMT packaging of Microwave ICs – Paper presented by Liam Devlin at the ARMMS conference, November 2012.

A Sub-harmonic E-band IRM/ SSB Realized on a Low Cost PHEMT Process – Paper presented by Andy Dearn at the 2012 European Microwave IC Conference (EuMIC), Amsterdam, October 2012.

A Low-Cost, 60GHz Driver Amplifier Operating from a Single +3V Supply – Paper presented by Liam Devlin at the IET seminar on Millimetre wave technologies for gigabit per second wireless communications, September 11th 2012.

An E-band Voltage Variable Attenuator Realised on a Low Cost 0.13µm PHEMT Process – Paper presented at the IET seminar on Millimetre wave technologies for gigabit per second wireless communications, September 11th 2012.

A Low Cost, Plastic Packaged, 0.5W, 6-18GHz Amplifier MMIC – Paper presented at the RF and Microwave Society (ARMMS) Conference, November 2011

Increasing operating frequencies provide new opportunities in wireless communications – New Electronics, Special Issue: High Frequency Comms, 26th July 2011

Future Opportunities and Challenges for mm-Wave Amplifier MMICs – Cover Article from Microwave Journal, April 2011

How to save money by using custom designed GaAs MMICs – Microwave Engineering Article, 23rd August 2010

The Design of E-band MMIC Amplifiers – Paper presented at the RF and Microwave Society (ARMMS) Conference, April 2010

An 18 to 40GHz Double Balanced Mixer MMIC – Paper presented at the IET Seminar on RF and Microwave IC Design, 28th February 2008

MMICs for Broadband Receiver Applications – Paper presented at the RF and Microwave Society (ARMMS) Conference, November 2007

MM-Wave Super Harmonic Injection Locked Frequency Dividers – Paper presented at the IET Seminar on MM-Wave Products and Technologies, 16th November 2006

The Design Of Single-Ended & Differential MMIC VCOs – Paper presented at the RF and Microwave Society (ARMMS) Conference, November 2006

Low Loss, Low Cost, Discrete PIN diode based, Microwave SPDT and SP4T Switches – Paper presented at the RF and Microwave Society (ARMMS) Conference, November 2005

MMIC Design for Wireless Broadband Access – Paper Presented at the 2004 Wireless Broadband Forum, November, 2004

Design Trade-offs for High Linearity PHEMT Switches – Paper presented at the RF and Microwave Society (ARMMS) Conference, November 2004

A universal GaAs HBT PA with active bias circuitry, covering 4.9-6 GHz – Paper Presented at the 2004 European GaAs IC Conference, October, 2004

RF Filter Design Using Coupled Co-axial Resonators – Paper Presented at the RF and Microwave Society (ARMMS) Conference, April 19th and 20th, 2004

How to Design Low-Cost MM-Wave Equipment – Paper Presented at the “Second Broadband Wireless Forum” November 25th to 26th 2003 in Cambridge, UK

InGap HBT MMIC Development – Paper Presented at the RF and Microwave Society ARMMS Conference 2003, November 3rd to 4th in Corby, Northamptonshire, UK

An LTCC Based Differential Microwave DRO Module – Paper Presented at the IET seminar on “Microwave Thick Film Materials and Circuits” held on 9th October 2002

A 2-18GHz Receiver Front-End – Paper presented at “The 2002 European Microwave Conference”, September 2002

A Monolithic, 2-18GHz Upconverter – Paper presented at MTT-S, June 2002

A Monolithic, Dual Channel, DC to 20 GHz SPDT – Paper presented at the Wireless Design Conference 2002, London, May 2002

RF and Microwave Component in LTCC – Published at the 38th Annual IMAPS Nordic Conference held in September 2001

Low Loss Monolithic MM-Wave SP4Ts – Paper presented at the “Workshop on Design for Broadband Wireless Access” held in Cambridge on May 3rd 2001

A Monolithic, Dual Channel, 0.5 to 20GHz Limiter – Paper presented at the European Microwave Conference 2000

Waveguide Packaging – Proceedings of the IEE Colloquium on “Packaging and Interconnects at Microwave and MM-Wave Frequencies”, Monday 26th June, 2000

Synthesiser Design – Paper presented at the The IET Training Event – “How to Design RF Circuits”, 5th April 2000

Oscillator Design – Paper presented at the The IET Training Event – “How to Design RF Circuits”, 5th April 2000

RF Mixer Design – Paper presented at the The IET Training Event – “How to Design RF Circuits”, 5th April 2000

Manufacturing Practical 28GHz Multichip Modules – Published in “Microwaves & RF”, December 1999, pp78-86

MMIC Oscillator Design – Paper presented at the The IET Colloquium on “The Design of RFICs and MMICs” held at Savoy Place, London on Wednesday 24th November 1999

Low Power Techniques for Silicon RFICs – Paper presented at the “The IET Colloquium on The Design of RFICs and MMICs” held at Savoy Place, London on Wednesday 24th November 1999

The Design of Integrated Switches and Phase Shifters – Paper presented at the “The IET Colloquium on The Design of RFICs and MMICs” held at Savoy Place, London on Wednesday 24th November 1999

Low Cost Microstrip Filters and Mixers at 43GHz – Paper presented at the IEE Colloquium on “MM-Wave Circuits and Technology for Commercial Applications”, held at Savoy Place, London on 24th March 1999

A 40 – 45GHz Monolithic Gilbert Cell Mixer – Paper presented at the IET Colloquium on “MM-Wave Circuits and Technology for Commercial Applications”, held at Savoy Place, London on 24th March 1999

RF ICs for Commercial Wireless Applications – Paper presented at The IET Colloquium on Design of RFIC’s and MMIC’s, held on 6th of November 1997 at the IEE, Savoy Place, London