QFE3320 Power Amplifier + ASM

77 Pages·2014·2.513 MB·English

by  Qualcomm Technologies Inc.

Training Slides
QFE3320 Power Amplifier
+ ASM
80-NJ121-21 Rev. A
Confidential and Proprietary - Qualcomm Technologies, Inc.
Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm or its
subsidiaries without the express approval of Qualcomm's Configuration Management.
Confidential and Proprietary - Qualcomm Technologies, Inc.

NO PUBLIC DISCLOSURE PERMITTED: Please report postings of this document on public servers or websites to: [email protected].

Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm or its subsidiaries without the express approval of
Qualcomm's Configuration Management.

Not to be used, copied, reproduced, or modified in whole or in part, nor its contents revealed in any manner to others without the express written permission
of Qualcomm Technologies, Inc.

Qualcomm is a trademark of QUALCOMM Incorporated, registered in the United States and other countries. Qualcomm is a trademark of QUALCOMM
Incorporated, registered in the United States and other countries. All QUALCOMM Incorporated trademarks are used with permission. Other product and
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This technical data may be subject to U.S. and international export, re-export, or transfer (“export”) laws. Diversion contrary to U.S. and international law is
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Qualcomm Technologies, Inc.
5775 Morehouse Drive
San Diego, CA 92121
U.S.A.
© 2014 Qualcomm Technologies, Inc.
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 2
Revision History
Revision Date Description
A January 2014 Initial release.
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 3
Contents
1 Introduction 5
1.1 Qualcomm Power Amplifier + ASM Overview 6
1.1.1 QFE3320 Low/Mid-Band PA Module (PA + ASM) 11
1.2 QTI Support for Power Amplifier Devices 19
2 System-level Topics for Power Amplifiers 22
2.1 Example Applications 23
2.2 Software Defined RF Port Assignments 25
3 General Design Guidelines 29
3.1 RF Guidelines 30
3.2 Support Circuits 41
3.3 DC Power 48
3.4 Ground Connections 54
3.5 Keep-out Areas 58
4 Application-specific Design Guidelines 64
4.1 Regional 2DL CA using WTR3925 66
4.2 TBD Reference Design 75

Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 4
Section 1
1.1 Qualcomm® Power Amplifier + ASM
Overview 6
Introduction 1.1.1 QFE3320 Low/Mid-Band PA Module
(PA + ASM) 11
1.2 QTI Support for Power Amplifier Devices 19

Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 5
Section 1.1
Qualcomm Power Amplifier
1.1.1 QFE3320 Low/Mid-Band PA Module (PA +
ASM) 11
+ ASM Overview
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 6
Qualcomm Front-End Overview
6 Qualcomm Front-End (QFE) components
QFE2340
HB PA
ANT0_HB
Primary high TX_MHBa
Support TX_BB TX_DAC0
band antenna
PRX_HBa TX_DAC1
RX_TXFB RX_TXFB_BB BB_RX_FB
PRX_MBb
Primary low/mid Support
WTR Modem
band antenna TX_MHBb
3925 IC
ANT0_MLB
cpld QFE3320
MB
QFE
2520
LB
PRX_CA1_BB BB_RX_CH3
1100 SBuypppaossrt ower LB/MB PA TX_LBc PRX_CA2_BB BB_RX_CH0
ET QFE AEPPTT PA p ANT1_HB PRX_LBc
Diversity high DRX_HBa
band antenna
ort
p
p
Su DRX_MBb
Diversity low/mid ANT1_MLB 0 DRX_CA1_BB BB_RX_CH2
4
band antenna QFE MB 10 DRX_CA2_BB BB_RX_CH1
2550 E
LB F
Q
DRX_LBc
RxD SW
Antenna tuner ICs (QFE2520 & QFE2550) Simplified diagram highlights QFE devices / functions
were included in the reference design
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 7
PA Power Tracking (QFE1100)
The objective of advanced power management techniques such as envelope tracking (ET), average power

tracking (APT), and enhanced power tracking (APT + DPD), is to improve DC-to-RF efficiency over a wide
range of Tx power levels
Higher efficiency → less power dissipation → less heat generated and longer battery life

Efficiency is greatly improved using these advanced techniques

Recommended QTI documents for further study

QFE1100 PA Power Management Design Guidelines (80-NA681-5)


Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 8
Chipset Support Matrix
Power Amplifiers Tx Front-end
Chipset/modem IC PMIC
QFE3335 LB QFE3345 MB QFE2340 HB QFE3320 LMB
MDM9x30 PM9635
MDM8630    
MDM9230    
MDM9330    
MDM9630    
MDM9x35M PM9635
MDM9235M    
MDM9635M    
MSM8994     PM8994
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 9
Available Reference Designs
RF schematic
Baseband schematics RF configuration
(WTR3925 based)
MDM9x30
80-NJ115-41
80-NH379-43 includes:
• QFE1040 RxD SW
• QFE1100 PA ET
MDM9x35M
• QFE2520 Antenna tuner Regional 2DL CA
80-NH377-41
• QFE2550 Antenna tuner
• QFE2340 HB PA
• QFE3320 LMB PAM
MSM8994
80-NJ051-49
Each WTR-based reference design is compatible with all listed baseband reference designs.
Confidential and Proprietary - Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NJ121-21 Rev. A 10