This document provides a detailed analysis of an Alcatel-Lucent WCDMA 850MHz 40W remote radio unit (RRU). Key findings include: 1) The large RF duplexer filter at 850MHz required a redesign of the RRU casing with a special cover. 2) Alcatel-Lucent uses tamper-proof TORX screws to prevent unauthorized access to secrets inside the unit. 3) The RRU uses Alcatel-Lucent's MCR radio transceiver architecture and custom VCO modules for transmit and receive timing. The report contains detailed component analysis and identification of suppliers for the various subsystems.

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Alcatel-Lucent WCDMA 850MHz RRU, 40W Model 9341
Published on October 2010
Report Summary
Design Analysis Alcatel-Lucent WCDMA 850MHz 9341 40W Remote Radio Unit
This report covers the design analysis of an Alcatel-Lucent WCDMA 850MHz 9341 40W Remote Radio Unit. This unit is part of the
WCDMA base station platform for Alcatel-Lucent. The unit was manufactured in Q1 2009.
Key Findings:
The RF duplexer filter size at 850MHz caused a redesign of the entire RRU casing resulting in special cover for the filter.
Alcatel-Lucent used tamper proof TORX screws to prevent non-authorized user from opening the unit and discovering its secrets.
This is the only vendor we are aware of using this screw technology for their products.
Alcatel-Lucent is using its MCR radio transceiver architecture for its RRU product platform
Custom VCO modules are used for the transmit and receive timing
Component and semiconductor suppliers mentioned in this report include: Analog Devices, Anaren Microwave, ATC, Bourns, C-MAC,
Coilcraft, CTS Corporation, Cypress Semiconductor, Epcos AG, Fairchild Semiconductor, Freescale Semiconductor, Fujitsu
Microelectronics, GSI Technology, Hittite Microwave, International Rectifier, Integrated Device Technology, Intel, Linear Technology,
Marvell, Maxim Integrated Products, Micron, National Semiconductor, NXP Semiconductors, ON Semiconductor, RF MicroDevices,
Skyworks Solutions, STMicroelectronics, Texas Instruments, TriQuint Semiconductors and Xilinx.
Features
Complete Part Number/Marking
Component Manufacturer Identification
Function Component Description
Package Type
Total Pages: 78
Total Tables: 20
Total Exhibits: 74
Table of Content
TABLE OF CONTENTS
EXECUTIVE SUMMARY ...6
Active/Passive Component Summary 6
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Important Note: 6
CHAPTER 1: ALCATEL-LUCENT W-CDMA BBU/RRU SYSTEM 7
Overview of BBU/RRU Product Offering .7
CHAPTER 2: RRU 9341 MECHANICAL ANALYSIS ...9
Mechanical Analysis 9
RF Cables 17
CHAPTER 3: RRU 9341 POWER SUPPLY SUBSYSTEM 18
CHAPTER 4: RRU 9341 TRX SUBSYSTEM . 23
Digital Processor and TRx PCB 24
Area A: Support Circuitry for Area I, GE Transceiver, Digital Down Converter 26
Area B: RRU IF Down Conversion Receiver ...29
Area C: Transmit (Tx) Sampling Receiver .31
Area D: Main System Timing ..33
Area E: Tx/Rx System Timing .35
Area F: Tx RF Upconversion 37
Area G: RF Receiver ..39
Area H .42
Area I: Microprocessor and DPD/CFR Functions .44
Area J: Regulated Power Distribution Network ...46
TRx RF Shield ...48
RRU Interface Faceplate .49
RRU TRx Chassis ...50
Fiber Optic Transceiver PCB 51
Ethernet Interface/AISG PCB Module ...54
CHAPTER 5: RRU 9341 RF SUBSYSTEM ... 56
RF Power Amplifier 57
RF Power Amplifier Shield ...62
RRU RF Subsystem Duplexer Cavity Filter .64
APPENDIX A - PASSIVE CASE SIZE ANALYSIS .. 71
APPENDIX B - ACTIVE COMPONENT MARKET SHARE ANALYSIS .. 74
TABLES
Table 1: RRU Power Supply Unit Bill of Materials .. 22
Table 2: Area A Bill of Materials . 27
Table 3: Area B Bill of Materials . 30
Table 4: Area C Bill of Materials . 32
Table 5: Area D Component Diagram . 33
Table 6: Area D Bill of Materials . 34
Table 7: Area E Bill of Materials . 36
Table 8: Area F Bill of Materials . 38
Table 9: Area G Bill of Materials . 41
Table 10: Area H Bill of Materials ... 43
Table 11: Area I Bill of Materials 45
Table 12: Area J Bill of Materials 47
Table 13: RRU Fiber Optic Transceiver PCB Module Bill of Materials, Top . 53
Table 14: RRU Fiber Optic Transceiver PCB Module Bill of Materials, Bottom 53
Table 15: RF Power Amplifier Bill of Materials .. 60
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Table 16: RF Power Amplifier Bill of Materials (con't) 61
Table 17: Passive Component Case Size Distribution by System Subsection 72
Table 18: Identified Passive Component Supplier Distribution by System Subsection 72
Table 19: Active/Passive Component Distribution by System Subsection . 73
Table 20: Active Semiconductor/Component Vendor Distribution by System Subsection ... 75
EXHIBITS
Exhibit 1: Alcatel-Lucent W-CDMA NodeB System ..7
Exhibit 2: Alcatel-Lucent 9341 RRU System Block Diagram .8
Exhibit 3: RRU Sun Shield External View ...9
Exhibit 4: RRU Sun Shield Internal View . 10
Exhibit 5: ALU 9341 RRU Housing .. 10
Exhibit 6: RRU Side View, Right . 11
Exhibit 7: RRU Side View, Left ... 11
Exhibit 8: RRU, Bottom View . 12
Exhibit 9: RRU, Top View .. 12
Exhibit 10: RRU, End View 13
Exhibit 11: RRU Side Plate Covers External View .. 14
Exhibit 12: RRU Side Plate Covers Internal View .. 14
Exhibit 13: RRU Side Plates External View ... 15
Exhibit 14: RRU Side Plates Internal View ... 15
Exhibit 15: RRU Chassis Internal View 16
Exhibit 16: RRU RF Cables 17
Exhibit 17: RRU Power Supply Product Label ... 18
Exhibit 18: RRU Power Supply Diagram .. 18
Exhibit 19: RRU Power Supply Front View ... 19
Exhibit 20: RRU Power Supply Bottom View 19
Exhibit 21: RRH Power Supply Rear View 20
Exhibit 22: RRU Power Supply Component Diagram . 21
Exhibit 23: RRU Transceiver Subsystem .. 23
Exhibit 24: RRU Digital Processor/TRX PCB, Top View ... 24
Exhibit 25: RRU Digital Processor/TRX PCB, Bottom View .. 25
Exhibit 26: Area A Component Diagram .. 26
Exhibit 27: Area B Component Diagram .. 29
Exhibit 28: RRU IF Down Conversion Receiver Path Block Diagram . 29
Exhibit 29: Area C Component Diagram .. 31
Exhibit 30: RRU Transmit (Tx) Sampling receiver Path Block Diagram 31
Exhibit 31: Area E Component Diagram .. 35
Exhibit 32: Area F Component Diagram .. 37
Exhibit 33: Tx Path Block Diagram . 37
Exhibit 34: Area G Component Diagram .. 39
Exhibit 35: Area G RF Rx Block Diagram . 40
Exhibit 36: Area H Component Diagram .. 42
Exhibit 37: Area H Block Diagram .. 42
Exhibit 38: Area I Component Diagram ... 44
Exhibit 39: Area J Component Diagram ... 46
Exhibit 40: TRx RF Shield External View .. 48
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Exhibit 41: TRx RF Shield Internal View .. 49
Exhibit 42: RRU Interface Faceplate ... 49
Exhibit 43: RRU TRx Chassis, Internal View . 50
Exhibit 44: RRU Fiber Optic Transceiver .. 51
Exhibit 45: RRU Fiber Optic Transceiver PCB Module Component Diagram, Top View 51
Exhibit 46: RRU Fiber Optic Transceiver PCB Module Component Diagram, Bottom View ... 52
Exhibit 47: Ethernet/AISG PCB Module Component Diagram, Top View ... 54
Exhibit 48: Ethernet/AISG PCB Module Component Diagram, Bottom View .. 55
Exhibit 49: RRU RF Subsystem Internal View ... 56
Exhibit 50: Tx Path Block Diagram . 57
Exhibit 51: RRU RF Power Amplifier Component Diagram .. 58
Exhibit 52: RF Power Amplifier Construction 58
Exhibit 53: RF ATC Capacitor Placement . 59
Exhibit 54: RF Power Amplifier Shield, External View 62
Exhibit 55: RF Power Amplifier Shield, Internal View 63
Exhibit 56: Duplexer Filter, Top View .. 64
Exhibit 57: Duplexer Filter, Bottom View . 64
Exhibit 58: Duplexer Filter Label (J1) .. 65
Exhibit 59: Duplexer Filter P/N Label .. 65
Exhibit 60: Duplexer Shield, Top View 66
Exhibit 61: Duplexer Filter, Internal View 66
Exhibit 62: Duplexer Shield, Side View ... 67
Exhibit 63: Duplexer Shield, End View 67
Exhibit 64: 7/16 DIN Connector Washers 68
Exhibit 65: 7/16 DIN Connector Nuts .. 68
Exhibit 66: Duplexer Sun Shield, External Top View . 69
Exhibit 67: Duplexer Sun Shield, Internal View 69
Exhibit 68: Duplexer Sun Shield, External Side View 70
Exhibit 69: Passive Component Case Size Distribution .. 71
Exhibit 70: Identified Passive Component Market Share by Vendor . ... 73
Exhibit 71: Active Semiconductor Component Share . 74
Exhibit 72: High Pin Count IC vs. Discrete ... 76
Exhibit 73: Active Semiconductor Market Share by Vendor 76
Exhibit 74: High Pin Count (64+) Active Semiconductor Market Share by Vendor . 77
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