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Michael Crowley
FARRAN TECHNOLOGY
“The Search for Bandwidth –
60GHz Communications”
Interlligent 2015
RF & Microwave Design Seminar
Cambridge 2015
Presentation Overview
• Introduction
• Farran Technology
• mmWave Technology
• Applications
• Backhaul
• WiFi
• Test Solutions
• Summary
1978 : Farran Technology Limited (FTL) established by faculty staff from University College
Cork, Ireland - 35 years experience in millimeter-wave industry, specializing in products at
operating frequencies from 30 GHz to 3 THz.
2005 : Acquired by Smiths Detection (part of Smiths Group : €4b annual turnover)
• Security screening (“TADAR”) spun out as separate entity.
• FTL transferred to Smiths Interconnect
• 2013 : MBO initiated in Farran and completed in October 2013 – now 100% owned and
operated by Farran Management Team
FARRAN FACTOIDS:
• Over 100 years combined mm-wave experience in mmWave Design and Production
– >22 years combined mmWave design experience
– >48 years combined mmWave production/test experience
– >31 years combined mmWave CAD experience
– Design/Production/Test capabilities from 30 GHz to 3 THz
mmWave Developments
• In the past three decades there has been extensive research &
academic development in the area of mmWave technology
• Corresponding growth in customer demand for components and
systems
• Large number of test solutions available
– Signal Generators
– Spectrum Analysers
– Network Analysers
– Etc…
• V-Band & E-Band – increased popularity for
communications/broadband
mmWave Broadband Applications
• Backhaul
– Predicting that by 2020 high capacity base stations will typically require backhaul in the 1Gbps range
– Mobile broadband LTE (4G) & LTE Advanced (5G) will be more widely deployed towards 2020
– Mobile Broadband networks will need to evolve to satisfy increasing capacity needs
• Ericsson, Alcatel/Lucent, Huawei, Qualcomm, etc…
• LAN
– WiGig
– Promoting the adoption of multi-gigabit speed wireless communications operating over the unlicensed 60GHz frequency band
• Apple, Broadcom, Huawei, Intel, Qualcomm, Sony, Samsung, etc…
Backhaul Overview
• Total spectrum available for backhaul covers ~ 40GHz
Range Amount of Spectrum Hop Length Channel Spacing Area
6 - 13 GHz 5 GHz XL S - M Rural
15 - 23 GHz 5 GHz L M Suburban
26 - 42 GHz 13 GHz M M - L Urban
60 GHz 9 GHz XS XL Urban
70/80 GHz 10 GHz S XXL Urban
• 6 – 13GHz Low frequencies – long range will continue to be popular and
grow, capacity limitations due to typically narrow channels
• 15 – 23GHz are the most widely used bands globally, and will continue
to be
• 26 – 42GHz Currently 38GHz is utilized in Europe, wider channels will
allow for gigabit capacity – difficult for the two lower bands
Backhaul Overview
• V-Band (60GHz) – Ideal for small cell backhaul, high capacity &
high repeatability
– High capacity from the wide channels
– High repeatability due to the interference reduction from the
oxygen attenuation
• E-Band (70/80GHz) – new and fast growing
– Wide spectrum and channels – more capacity
– Band use being encouraged by light licensing & low spectrum
fees
LAN Overview
• WiGig
– In laymen's terms ‘microwave Wi-Fi’
– Aimed at superfast upload/download for someone near the
router
• Support multiple-gigabit data rates
• Known as 802.11ad
• WHY???
– Game machines
– Video cameras - streaming
– 4K televisions
58.32GHz
60.48GHz
62.64GHz
64.80GHz
55.26GHz 67.86GHz
RF Frequencies
WiGig802.11ad Spectrum Emission Masks -
Frequency channels
Channel Centre [GHz] Min [GHz] Max [GHz] BW [GHz]
1 58.32 57.24 59.4 2.16
2 60.48 59.4 61.56 2.16
3 62.64 61.56 63.72 2.16
4 64.8 63.72 65.88 2.16
LAN Overview
Communication Link Frequency Extenders
• S-Parameter characterization at RF & microwave frequencies is readily
available in most VNA’s on the market today, high frequency VNA’s or
through frequency extension solutions
– Farran supplies these solutions…
• Increased interest in 60GHz communication links
– Increased interest in how best to characterise & test these links
• FCE-15 system
– Designed to work with Arbitrary Waveform Generators (AWG) driving
the upconverter chain with external signal generator controlling the LO
frequency
– Low noise receiver on the downconverter side with suitable
oscilloscope
FCE-15 Upconverter Architecture
• Challenges - Upconverter
– Operating bandwidth
– Transmitter P1dB/Linearity
– Spectrum purity
– In band flatness
• Architecture
– Dual Up-conversion
– Custom designed PA
– Numerous Filters
– Isolators & careful S-Parameter
matching
FCE-15 Downconverter Architecture
• Challenges – Down-converter
– Operating bandwidth
– Receiver Sensitivity
– Spectrum purity
– In band flatness
• Architecture
– Broadband components – not as
much as issue as up-converter
– High spec LNA
– Filtering
– Isolators & careful S-Para
matching
FCE-15 System
• Reference “Golden Transceivers”
– Individual up/down converters for transmitter or receiver testing
• Combination of up and downconverter
– Antennas
– Components
– Subsystems
FCE-15 System
Farran Technology Ltd.
Airport East Business Park,
Farmers Cross
Co. Cork, Ireland
Tel: + 353 21 4849170
Fax: + 353 21 4849192
Email : [email protected]
Web: www.farran.com
QUESTIONS?
