Transcript Overview presentation on Close Proximity Electric

Ecma/TC50/2010/037
Close Proximity Electric Induction Data Transfer
Overview
September 2010
What is Electric Induction Coupling?
 Electric Induction Coupling is a new wireless technology that
combines the speed of UWB (Ultra-Wide Band) with the ease of
NFC (Near Field Communications). Operating up to a distance of
a few centimeters, this technology delivers a close proximity
connection at a transfer speed of 560 Mbps by means of a simple
“touch” between two devices. From a user standpoint, this model
can be thought of as an intuitive, touch-activated, high-speed
data interface providing instant connectivity between a wide
variety of consumer (and non-consumer) electronic products.
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Key Concepts

Proximity Interface - Intuitive Model



High Speed
560 Mbps (max) for the physical layer

375 Mbps (max) effective throughput
Get info
No Setup Required
Instant, ad-hoc touch triggers the connection
Share files
Safe and Secure


Example
Use Cases



Simply bring two devices close together and the connection is
established and data transfer begins!
Limited spatial reach ensures inherent privacy and security
Print photos
Interference Free

Induction coupler and low power minimize interference effects

Excellent co-existence with other systems
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The Benefits
 This wireless standard enables a high-speed, low-power
interface for the transfer of data between two active devices in
very close proximity.
 There are no standards in existence today that can handle bi-
directional data transfer at speeds above 500 Mbps optimized for
close proximity, one-to-one communication.
 This standard ensures basic connectivity and interoperability for
data transfer regardless of product, application, usage model or
content.
 This standard can be directly applied for a variety of different
industry segments, including consumer electronics, industrial,
enterprise, public areas and special environments.
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Basic Technology
Center Frequency
4.48 GHz
Bandwidth
560 MHz
Transmission Power
<
_ -70 dBm/MHz
Transmission Rate
560 Mbps (physical）
Modulation
Direct Sequence Spread
Spectrum (DSSS)
Communication Distance
Up to a few centimeters
Data Transfer Direction
Bi-directional, symmetric
Antenna Element
Electric Induction Coupler
Connection Topology
1-to-1, Point-to-Point
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Unique Wireless Positioning
Proximity
Longitudinal
Electric
Induction
Effective Throughput (Mps)
500
High-Speed
Data Transfer
Interface
100
- High-Speed Data Transfer
- Robust Connection
- Secure Communications
- Zero Configuration / Setup
- Interference Free
- Regulatory Compliance
ECMA-368…
UWB
Personal Area Networking
Wi-Fi
802.11a/b/g/n
10
Memory
Spot
Enhanced RFID
Local Area Networking
ECMA-340…
1
Bluetooth 2.1
NFC
Authentication
Transaction
1
Low-bandwidth
Personal Area Networking
10
100
Distance Coverage (m)
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Frequency Usage
The frequency used is from 4.2 to 4.76 GHz, corresponding to a section of the UWB band
available in most regions of the world. The power level is kept at or below -70 dBm/MHz,
which means that a compliant device will be DAA exempt.
-41.3 dBm/MHz:
-70 dBm/MHz:
Region of Operation
4.2 to 4.76 GHz
-70 dBm/MHz or below
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Electric Induction Principle
A specially designed antenna called a coupler is used to maximize the longitudinal electric
induction component and minimize the radiation component of the wireless energy. This results
in highly efficient coupling in the near field while providing sharp attenuation in the far field.
Longitudinal
Component
Electric Induction
Coupling Mode
pe jkR  1
jk 
ER 
 3  2  cos
2  R
R 
Transverse
Component
z
Induction
Plate
結合電極
Inductive
Charge
Q
Resonant
共振部
Stub
pe jkR  1
jk k 2 
 3  2   sin 
E 
4  R
R
R
ER

E
jpe jkR 
1
jk 
H 

  sin 
4
R2 R 

+++++
L
_____
Inverse
Mirror Charge
Q
x
y
Quasi-Static
Induction
Radiation
Ground
グランド
Generic Coupler Structure
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Electric Induction Coupling Animation
λ/ 2 @ 4.48GHz
The coupler delivers a "bubble" of energy which collapses back in its entirety with each cycle,
unless another coupler comes into its vicinity in which case part of the energy is absorbed by
this target coupler. When there are no target couplers nearby, no energy is dissipated unlike
traditional antennas radiating TEM waves.
1cm
Coupler
No Target
Target within range
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Electric Field Propagation
Conventional Radiating Dipole Antenna
Linear Polarization
Because the longitudinal electric
induction fields originate from a single
plate, they are not polarized. The
couplers can approach each other at
any angle without sacrificing coupling
performance, in contrast to
radiating antennas which generally
have clear polarizing characteristics.
Longitudinal Electric Induction Coupler
Polarization Free
The near-field sensitivity is also
higher using couplers compared to
traditional dipole antennas.
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Usage Scenarios
In addition to consumer electronics, electric
induction data transfer is also suited for industrial
and other usage scenarios that require robust,
high-speed, non-contact connections.
Consumer Electronics
Home & Personal
AV products
Digital Signage
Enterprise
Kiosk
Industrial
Public Areas
Location-Based
Shopping Mall
Outdoor Use
Industrial
Automotive
Rugged Environments
Outdoors
Under water
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Creating a New Touch Paradigm
Worlds are About to Touch
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CH-1204 Geneva
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F: +41 22 849 6001
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www.ecma-international.org
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