qBoost: Be Powerful in 3G and LTE - mipi.org Presentation Quantance... · High speed, high efficiency power supplies improve 3G /LTE ... Uplink Throughput (Conducted Measurement with

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Copyright © 2012 MIPI Alliance. All rights reserved.

Vikas Vinayak, CEO Quantance, Inc


qBoost: Be Powerful in 3G and LTE

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Legal Disclaimer

The material contained herein is not a license, either expressly or impliedly, to any IPR owned or controlled by any of the authors or developers of this

material or MIPI. The material contained herein is provided on an “AS IS” basis and to the maximum extent permitted by applicable law, this material is

provided AS IS AND WITH ALL FAULTS, and the authors and developers of this material and MIPI hereby disclaim all other warranties and conditions,

either express, implied or statutory, including, but not limited to, any (if any) implied warranties, duties or conditions of merchantability, of fitness for a

particular purpose, of accuracy or completeness of responses, of results, of workmanlike effort, of lack of viruses, and of lack of negligence. ALSO,

THERE IS NO WARRANTY OR CONDITION OF TITLE, QUIET ENJOYMENT, QUIET POSSESSION, CORRESPONDENCE TO DESCRIPTION OR

NON-INFRINGEMENT WITH REGARD TO THIS MATERIAL.

All materials contained herein are protected by copyright laws, and may not be reproduced, republished, distributed, transmitted, displayed, broadcast or

otherwise exploited in any manner without the express prior written permission of MIPI Alliance. MIPI, MIPI Alliance and the dotted rainbow arch and all

related trademarks, tradenames, and other intellectual property are the exclusive property of MIPI Alliance and cannot be used without its express prior

written permission.

IN NO EVENT WILL ANY AUTHOR OR DEVELOPER OF THIS MATERIAL OR MIPI BE LIABLE TO ANY OTHER PARTY FOR THE COST OF

PROCURING SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA, OR ANY INCIDENTAL, CONSEQUENTIAL,

DIRECT, INDIRECT, OR SPECIAL DAMAGES WHETHER UNDER CONTRACT, TORT, WARRANTY, OR OTHERWISE, ARISING IN ANY WAY OUT

OF THIS OR ANY OTHER AGREEMENT RELATING TO THIS MATERIAL, WHETHER OR NOT SUCH PARTY HAD ADVANCE NOTICE OF THE

POSSIBILITY OF SUCH DAMAGES.

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“…Houston, we have a problem” James Lovell , April 1970

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Envelope Tracking (ET) has become commercially viable

MIPI RFFE Interface enables mass market adoption of ET power supplies

High speed, high efficiency power supplies improve 3G /LTE

• Reduce costs

• Increase data speed

• Increase capacity

• Increase coverage

3G/LTE Data Networks need qBoost™ ET Power Management

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Network Performance depends on communication through RF Signals

RF Signals are in short supply for data

Heat places limitations on RF Signals

Data generates more heat than voice

Envelope Tracking Power Management can reduce heat

Data requires faster envelope power management

Quantance delivers the fastest power supply

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3G & LTE data speeds and data coverage stink

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Mobile networks use RF signals to communicate wirelessly

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Stronger RF signals carry more data Doubling RF Power is like using two phones

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Weaker RF signals reduce data speeds …

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... or even dropped calls

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Basestation RF Signals are 2-Orders of magnitude stronger

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Human interaction can drastically reduce RF Signals and send them the wrong way

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For data, your phone can transmit only half the power it can in voice

-50%

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Tablets, smart phones and data cards have limited power to send data

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Their power amplifiers (PAs) cannot produce the high power needed

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A tiny qBoost chip enables the PA with 100% more transmit power.

Enables

100%

Power

Increase

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Power Amplifiers can contribute up to 70% of battery drain

70%

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Heat is a waste byproduct of RF Power Amplifiers Heat is the design barrier

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Crossing the Heat Barrier: Efficiency or Convection Cooling

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Data carries more information than Voice Information is Change

Data changes faster and more than voice

64

kbps

10,000

kbps

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Faster changing and wider changing RF Signals are harder to amplify Voice is more efficient to amplify than data

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Average Power Tracking Instantaneous Power Tracking

with Quantance qBoost™

Slow Fast

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Types of Fast Power Management

Brute Force 100X increase

Clock Speed

Architectural Tailor to demand

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Combine two fast power supplies

Analog:

Speedy but

inefficient

Digital:

Efficient but

Slow

Fast and Efficient

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Combining two fast power supplies is challenging

Efficiency Noise

Bandwidth Stability

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3rd Generation Quantance Solution

Q845

Power Supply

PA

3G / 4G

Chipset

MIPI RFFE v1.10

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Device Performance

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20

21

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E585With Quantance

Tra

nsm

it P

ow

er

(dB

m)

11 Mbps

11 Mbps 5.6 Mbps

384 Kbps

Uplink Performance

Without Quantance Uplink Performance

with Quantance

Active Modulation

R99

HSPA

HSPA+

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Network Performance

Up

lin

k T

hro

ug

hp

ut

(bp

s)

Uplink Throughput (Conducted Measurement with real NodeB)

Q1005: 24 dBm R99, 23dBm HSUPA

Baseline: 20 dBm R99, 20dBm HSUPA

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“Houston, the problem is fixed”

qBoost: More Power for 3G & LTE

Documents

qBoost: Be Powerful in 3G and LTE - mipi.org Presentation Quantance... · High speed, high efficiency power supplies improve 3G /LTE ... Uplink Throughput (Conducted Measurement with