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Design Analysis Alcatel-Lucent LTE 700MHz TRDU 2x40W Transmit Receive Duplexer Unit (TRDU)

This report covers the design analysis of an Alcatel-Lucent LTE 700MHz TRDU 2x40W unit. This unit is part of the LTE eNodeB platform for Alcatel-Lucent. The unit was manufactured in Q2 2009.

Key Findings:

• The RF duplexer filters are integrated into the TRDU housing.
• The unit is designed and manufactured by CommScope for Alcatel-Lucent.
• TRDU is a comprised of two sub-systems (power amplifier & radio transceiver) that are mechanically and electrically connected

Component and semiconductor suppliers mentioned in this report include:

Analog Devices, Anaren Microwave, AVX, Coilcraft, Cypress Semiconductor, , Fairchild Semiconductor, Freescale Semiconductor, Hittite Microwave, International Rectifier, Integrated Device Technology, Linear Technology, Maxim Integrated Products, Micron, National Semiconductor, NXP Semiconductors, ON Semiconductor, s, STMicroelectronics, TDK-Epcos AG Texas Instruments, TriQuint Semiconductors and Vishay.

Table Of Contents

Design Analysis Alcatel-Lucent LTE 700MHz TRDU 2x40W Transmit Receive Duplexer Unit (TRDU)
TABLE OF CONTENTS

EXECUTIVE SUMMARY 6

Active/Passive Component Summary 6
Important Note: 6

CHAPTER 1: ALCATEL-LUCENT LTE BBU/RRU SYSTEM 7

Overview of BBU/RRU Product Offering 7

CHAPTER 2: TRDU MECHANICAL ANALYSIS 10

Mechanical Analysis 10
TRDU DC and RF Cables 15

CHAPTER 3: TRDU TRX HOUSING 20

CHAPTER 4: DIGITAL PROCESSOR AND TRX PCB 23

Area A: Processor/CPRI Interface/DUC-DDC/CFR/DPD 25
Area B: Radio Transmitter 28
Area C: Receiver A/D Conversion 30
Area D: Receiver 31
Area E: System Timing 33
Area F: Tx Sampling Circuit 35
Area G: Transceiver Support Circuitry 38

CHAPTER 5: LNA SUBSYSTEM 40

CHAPTER 6: TRDU RF DUPLEXER FILTER SUBSYSTEM 51

CHAPTER 7: TRDU POWER AMPLIFIER HOUSING 60

Power Amplifier RF Shield 63

CHAPTER 8: TRDU POWER AMPLIFIER SUBSYSTEM 65

CHAPTER 9: TRDU POWER SUPPLY SUBSYSTEM 75

Power Supply Area A 77
Power Supply Area B 78
Power Supply Area C 79
Power Supply Area D 80

APPENDIX A - PASSIVE COMPONENT MARKET SHARE/CASE SIZE ANALYSIS 85

APPENDIX B - ACTIVE COMPONENT MARKET SHARE ANALYSIS 89



TABLES

Table 1: TRDU Cables/Connectors Bill of Materials 15
Table 2: Area A Bill of Materials 26
Table 3: Area B Bill of Materials 29
Table 4: Area E Bill of Materials 34
Table 5: Area F1 Bill of Materials 37
Table 6: Area F2 Bill of Materials 37
Table 7: Area G Bill of Materials 39
Table 8: LNA Area A Bill of Materials 49
Table 9: LNA Area B Bill of Materials 50
Table 10: Power Amplifier Bill of Materials 72
Table 11: Power Amplifier Output Stage Bill of Materials 74
Table 12: Power Amplifier Drive Stage Bill of Materials 74
Table 13: Power Supply Area A Bill of Materials 81
Table 14: Power Supply Area B Bill of Materials 82
Table 15: Power Supply Area C Bill of Materials 83
Table 16: Power Supply Area D Bill of Materials 84
Table 17: Passive Component Case Size Distribution by System Subsection 86
Table 18: Identified Passive Component Supplier Distribution by System Subsection 87
Table 19: Active/Passive Component Distribution by System Subsection 88
Table 20: Active Semiconductor/Component Vendor Distribution by System Subsection 90



EXHIBITS

Exhibit 1: Alcatel-Lucent 9914 LTE eNodeB System 7
Exhibit 2: Alcatel-Lucent TRDU System Block Diagram 8
Exhibit 3: Alcatel-Lucent 9926 V2 d2U 9
Exhibit 4: TRDU Connection Interfaces 9
Exhibit 5: TRDU Front View 10
Exhibit 6: TRDU Back View 11
Exhibit 7: TRDU, Side View 11
Exhibit 8: TRDU, Top View 12
Exhibit 9: TRDU, Bottom View 12
Exhibit 10: Faceplate, External View 13
Exhibit 11: Faceplate, Internal View 13
Exhibit 12: Backplate, External View 14
Exhibit 13: Backplate, Internal View 14
Exhibit 14: TRDU Housing, TRx (L) and Power Amplifier (R) 14
Exhibit 15: RF Coaxial Cable, RF Power Amplifier/RF Receiver to Transceiver 15
Exhibit 16: RF Coaxial Cable, RF Power Amplifier to Duplexer Filter 16
Exhibit 17: Ribbon Cables 16
Exhibit 18: DC Power Cables 16
Exhibit 19: TRDU Cables/Connectors Location Diagram, Transceiver 17
Exhibit 20: TRDU Cables/Connectors Location Diagram, Power Amplifier 17
Exhibit 21: TRDU Cables/Connectors System Block Diagram 18
Exhibit 22: TRDU TRx Housing, Top 20
Exhibit 23: TRDU TRx Housing, Bottom 21
Exhibit 24: TRx RF Shield, External View 22
Exhibit 25: TRx RF Shield, Internal View 22
Exhibit 26: TRDU Digital Processor/TRX PCB, Top View 23
Exhibit 27: TRDU Digital Processor/TRX PCB, Bottom View 24
Exhibit 28: Area A Component Diagram 25
Exhibit 29: Area B Component Diagram 28
Exhibit 30: Area B Block Diagram 28
Exhibit 31: Area C Component Diagram 30
Exhibit 32: Area D1 and Area D2 31
Exhibit 33: Area D Component Diagram 32
Exhibit 34: Area D2 Block Diagram 32
Exhibit 35: Area E Component Diagram 33
Exhibit 36: Area F1 Component Diagram 35
Exhibit 37: Area F2 Component Diagram 35
Exhibit 38: Area F1 and F2 Block Diagram 36
Exhibit 39: Area G Component Diagram 38
Exhibit 40: LNA Subsystem Location 40
Exhibit 41: LNA Subsystem Location with TRx PCB Removed 41
Exhibit 42: LNA RF Shield, External View 42
Exhibit 43: RF Shield, External View 42
Exhibit 44: LNA PCB Location 43
Exhibit 45: LNA PCB/RF Shield Location with LNA PCB Removed 44
Exhibit 46: LNA PCB Dimensions 44
Exhibit 47: LNA Port RF Paths 45
Exhibit 48: LNA Areas A and B 45
Exhibit 49: LNA Area A Component Diagram 46
Exhibit 50: LNA Area A Block Diagram 47
Exhibit 51: LNA Area B Component Diagram 47
Exhibit 52: LNA Area B Block Diagram 48
Exhibit 53: TRDU RF Duplexer Filters 51
Exhibit 54: RF Duplexer Shield Dimensions 52
Exhibit 55: RF Duplexer Shield, Top View 52
Exhibit 56: RF Duplexer Shield, Bottom View 53
Exhibit 57: RF Duplexer Filters, Tx and Rx Filters 53
Exhibit 58: RF Duplexer Filter Tx and Rx Paths 54
Exhibit 59: RF Duplexer Filter Resonator Types 55
Exhibit 60: Rx Filter Resonator Coupler Locations 56
Exhibit 61: Rx Filter Coupler Location, Close Up View 57
Exhibit 62: Resonator Type A and B, Top and Bottom Views 58
Exhibit 63: Resonator Type A and B, Side View 59
Exhibit 64: Power Amplifier Housing, Top View 60
Exhibit 65: Power Amplifier Housing, Bottom View 61
Exhibit 66: Power Amplifier Housing without PCBs, Top View 62
Exhibit 67: Power Amplifier RF Shield, External View 63
Exhibit 68: Power Amplifier RF Shield, Internal View 64
Exhibit 69: RF Power Amplifier Block Diagram 66
Exhibit 70: RF Power Amplifier Exploded, Side View 66
Exhibit 71: TRDU Power Amplifiers 67
Exhibit 72: TRDU RF Power Amplifier Component Diagram 67
Exhibit 73: TRDU RF Power Amplifier Component Diagram 2 68
Exhibit 74: TRDU RF Power Amplifier PCB, Top View 68
Exhibit 75: TRDU RF Power Amplifier PCB, Bottom View 69
Exhibit 76: TRDU Driver Stage Amplifier Pallet, Top View 69
Exhibit 77: TRDU Driver Stage Amplifier Pallet, Bottom View 70
Exhibit 78: TRDU Output Stage Amplifier Pallet, Top View 70
Exhibit 79: TRDU Output Stage Amplifier Pallet, Bottom View 71
Exhibit 80: TRDU Power Supply Location 75
Exhibit 81: TRDU Power Supply Dimensions 75
Exhibit 82: Power Supply PCB, Top View 76
Exhibit 83: Power Supply PCB, Bottom View 76
Exhibit 84: Power Supply Area A Component Diagram 77
Exhibit 85: Power Supply Area B Component Diagram 78
Exhibit 86: Power Supply Area C Component Diagram 79
Exhibit 87: Power Supply Area D Component Diagram 80
Exhibit 88: Passive Component Case Size Distribution 85
Exhibit 89: Identified Passive Component Market Share by Vendor 88
Exhibit 90: Active Semiconductor Component Share 89
Exhibit 91: High Pin Count IC vs Discretes 92
Exhibit 92: Active Semiconductor Market Share by Vendor 92
Exhibit 93: High Pin Count (64+) Active Semiconductor Market Share by Vendor 93

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