Transcript Document

PCTEL: Performance Critical
DAS Line
Agenda:
• PIM Review – Why we need to mitigate it
• What is our DAS line RIGHT NOW?
• How do we sell it?
– PCTEL Advantage
– No carrier specific approval yet – Can we get
around it?
– Who is the target customer?
What is PIM?
• Passive intermodulation (PIM) is the
generation of interfering signals
caused by mechanical components
of a wireless system.
• This causes two signals to mix
together and produce signals within
the same band, causing
interference.
PIM and Mobile Devices
Cellular networks are particularly vulnerable to
PIM for a couple of reasons:
• They are high power
• There are often multiple carriers at very close
frequencies in close proximity to each other
• The devices linking back to the cell are very
low power, creating a need for a high receive
sensitivity
Negative Effects of PIM
• Higher noise floor
• Interference
– Decreased capacity
– Interfering signals act as mobile
devices
– Decreased coverage area
• All add up to needing more base
stations and cells = BIG DOLLAR$!
5
Visual Example: The PIM Problem
SCREAM
Whispers
PIM Products look like mobile devices!
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What Causes PIM
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Loose connections
Corrosion
Metal debris
Improper materials
– Paramagnetic materials cause PIM
– Improper dielectric materials
– Poor plating/plating materials
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DAS Portfolio 2/1/2015
PCTCMHD
OLTE7027SPT-I
OLTE7027S-I
SLTE7027SPT-I
DAS Line Available Today
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PCTEL Advantages
• Other than PCTCMHD Aren’t these “Me Too”
Products?
– Yes. These are not new concepts or ideas, but they have
their own advantages
• Value Line – Some of the most inexpensive yet
effective PIM rated antennas on the market!
– OLTE7027SPT(N)-I or OLTE7027SPT(N)-I
– SLET7027SPT(N)-I or SLET7027SPT(N)-I
• Mounting – Ceiling tile AND sheet rock mounting
• Mini DIN options – Likely to be a VZW requirement
• Availability – Stocked locally, shipped quickly
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OLTE7027S-I
• DAS omni with 690MHz - 6GHz
Range
• Mounting for ceiling tiles or sheet
rock (Important for hospitality!)
• Bulkhead direct connection
• $69 List price
• Available and in stock now
• Mini DIN option coming soon
OLTE7027SPT-I
• DAS omni with 690MHz – 2.7GHz
Range
• Mounting for ceiling tiles only
• Plenum Pigtail
• $41.53 List price (N Connector)
• $43.53 List price (Mini DIN)
• Available and in stock now
• Mini DIN and N Options both in
stock
• Alternative to CommScope p/n
CELLMAX-O-CPUSEI
SLTE7027SPT-I
• DAS directional (sector) with
690MHz – 2.7GHz range
• Mounting for ceiling tiles only
• Plenum pigtail
• $60.17 List price (N Connector)
• $62.17 List price (Mini DIN)
• Available and in stock now
• Mini DIN and N options both in
stock
• Alternative to CommScope p/n
CELLMAX-D-CPUSEI
PCTCMB
• DAS omni with 690MHz - 6GHz
Range up to two WiFi elements
• IP-67 when mounted on IP67
Enclosures
• Multiple low PIM pigtails
• No list price
• Available now with minor tweaks
(custom for part for now, no IP)
• Perfect for stadium, transit and
other semi outdoor venues
The Elephant in the Room...
These products are not yet carrier certified
• Many other DAS SISO omnis and sectors are already
approved by the big 4 – they don’t have a current
need to approve ours
– If we push through certain integrators etc. we may gain
approvals
– Other products are being developed that will be needed
• Many Installs are not funded by carriers. They do not
require carrier approval on all equipment
• We must alter our target customer to see success
Our Current Target Customer
• Though it may change when we get more approvals, our
target customer is different than Commscope’s for now
– We will not sell to Crown Castle, AT&T, Verizon, etc. with our
current product line
– We need to sell to different types of integrators who don’t
have carrier funding up front
• Many S/Is sell whole systems or sell to building owners
– SAC, Extenet, Acela, etc.
– They are major DAS players, with major accounts
• End Users
– If it is not funded by a carrier up front, it does not need to be
on their “drop down list”
Thank You!
Questions and Comments:
If you have any other questions or comments, feel free to
call or email us and we will get answers to you right away.
Ben Bishop
(708) 465-5033
[email protected]
Faye Vorick
(630) 233-8012
[email protected]
And for the Tech Nerds... (Like Me!)
Transmit (Tx) Band
Receive (Rx) Band
PIM interference
PIM Math (Reference Slide)
PIM is only a problem in systems with close uplink and
downlink frequencies, or close to double. Here is why:
F1 and F2 are the frequencies of the 2 carriers where F1 and F2 are interchangeable.
The orders equal the sum of the coefficients
2nd order PIM = F1 +/- F2 (1+1=2 Therefore 2nd order)
3rd order PIM = 2 x F1 +/- F2 (2+1=3 Therefore 3rd order)
4th order PIM = 3 x F1 +/- F2 or 2F1 +/- F2 (3+1=4, 2+2=4, 4th Order)
5th order PIM = 3 x F1 +/- 2 x F2 etc...