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Design Analysis Ericsson W-CDMA/LTE 2100MHz RRUS12 B4 2x60W Remote Radio Unit

  • April 2015
  • -
  • EJL Wireless Research LLC
  • -
  • 159 pages

EXECUTIVE SUMMARY
This report is a design “teardown” analysis of an Ericsson 2100MHz Band 4 2x2 MIMO remote radio unit multi-standard (RRUS) supporting LTE technology. The analysis covers the entire system including the power supply, transmit, receive, amplifiers and duplexer filters functions. A simplified mechanical analysis of the unit along with detailed bill of materials analysis is presented in this report. The Ericsson product name is RRUS12 B4. The Ericsson P/N for this RRUS is KRC 161 349/2 R1B.

Active/Passive Component Summary
Total Weight: 26.3 kg [4]
Total Active/Passive Components: [1]
Total Active/Passive Components: [2]
Total Active Components: [2]
Total Passive Components: [2]
Total Other Components: [3]

[1] Excluding components on hybrid modules and DC/RF cables & connectors
[2] Including components on hybrid modules and excluding DC/RF cables & connectors
[3] Primarily DC/RF Cables & Connectors
[4] Including solar shields, 23.1kg without solar shields.

Important Note:
This particular unit was built in Q4 2013, given the date codes present on many of the semiconductor integrated circuits contained within the unit as well as on the front panel of the unit. As such, some or many of the components, both active and passive, have been updated or replaced by more recent part numbers. The majority of the components contained within the bill of materials analysis are not RoHS compliant. We believe that the overall system and functionality presented has not changed dramatically compared to the latest version of this unit.

Where possible, all components, both passive and active, have been identified with the manufacturer’s part number within the bill of materials analysis. This analysis does not include any pricing information or estimated costs on the mechanical design or for any passive or active components contained within the system.

All dimensions, unless otherwise specifically stated, are in metric format.

This report covers the design analysis of an Ericsson W-CDMA/LTE 2100MHz RRUS12 B4 2x60W remote radio unit. This unit is part of the RBS6601 main/remote base station platform for Ericsson supporting GSM/W-CDMA/LTE. The unit was manufactured in Q4 2013.

Key Findings:

The remote radio unit uses an innovative heat dissipation system to keep the high power amplifiers from overheating.

Ericsson has switched to a new transceiver architecture that increases integration of semiconductor and passive components to reduce overall system size.

Component and semiconductor suppliers mentioned in this report include: Analog Devices, Altera, Anaren Microwave, Coilcraft, Epson Toyocom, Fairchild Semiconductor, Hittite Microwave, Infineon Technologies, Integrated Device Technology, Kemet, Maxim Integrated Products, Micron, Murata, National Semiconductor, NDK, Nippon Chemi-Con, NXP Semiconductors, ON Semiconductor, Panasonic, Peregrine Semiconductor, Pulse Engineering, RF MicroDevices, Skyworks Solutions, STMicroelectronics, TDK-Epcos, Texas Instruments, TriQuint Semiconductors and Vishay Semiconductors.

Features:
Complete Part Number/Marking
Component Manufacturer Identification
Function Component Description
Package Type

Total Pages: 159
Total Tables: 48
Total Exhibits: 135

Table Of Contents

Design Analysis Ericsson W-CDMA/LTE 2100MHz RRUS12 B4 2x60W Remote Radio Unit
TABLE OF CONTENTS
EXECUTIVE SUMMARY .. 8
Active/Passive Component Summary . 8
Important Note: .. 8
CHAPTER 1: ERICSSON RBS6000 BTS SYSTEM 9
Overview of RBS6601 Product Offering . 9
CHAPTER 2: RRUS 12 MECHANICAL ANALYSIS 14
Mechanical Analysis14
RRUS 12 Duplexer Filter Cover19
RRUS 12 Top Frame ..21
RRUS 12 DC and RF Cables .28
RRUS 12 Rear Frame .30
CHAPTER 3: RRUS 12 INTERFACE SUBSYSTEM 33
CHAPTER 4: RRUS 12 POWER SURGE PROTECTION DEVICE (SPD) PCB 37
CHAPTER 5: RRUS 12 TRX/PA SUBSYSTEM 40
Digital Processor, TRx, Power Amplifier PCB 40
Area A: Baseband Signal Processing .46
Areas A1 and A2: Power Supply Support Circuitry.47
Area B: Transmit Path B ..53
Area C: DC-DC Converter.55
Area D: Power Supply for Power Amplifier A57
Areas E1 and E2: DPD Feedback Loop ..59
Area F: Power Amplifiers A and B ..65
Areas G and O: Support Circuitry for Areas B and N .70
Area H: Support Circuitry for ROR 101 0002/AA 72
Area I: Support Circuitry for ROR 101 0014/BA .73
Area J: Power Supply 74
Area K: Power Supply 76
Area L: Support Circuitry for Area A and External RF Cross Connects..78
Area M: Power Supply for Power Amplifier A ..80
Area N: Transmit Path A ..82
Areas P1 and P2: Support Circuitry for Power Amplifier A and B 84
Area Q: Tx Feedback and RXA/RXB ..87
Area R: Dual Channel RF/IF Downconversion Receiver.89
Area S: System Timing .91
ROR 101 0001/BB R1B .93
ROR 101 0002/AA R1C .96
ROR 101 0003/BA R1D .99
ROR 101 0009/AA R1D .. 102
ROR 101 0010/BA R1E .. 105
ROR 101 0014/BA R1C .. 108
PA9F73 Frequency Synthesizer Module.. 111
PV1F01 Frequency Synthesizer Module.. 113
E-H14A Frequency Synthesizer Module.. 115
E-H03B Frequency Synthesizer Module.. 117
E-H03B Frequency Synthesizer Module.. 119
CHAPTER 6: RRUS 12 DUPLEXER CAVITY FILTER RF SUBSYSTEM 121
VSWR PCB . 127
RRUS 12 Duplexer Filter Waveguide/Resonator Analysis .. 134
TX Sampling Circuit. 138
APPENDIX A - PASSIVE COMPONENT MARKET SHARE/CASE SIZE ANALYSIS .. 144
APPENDIX B - ACTIVE COMPONENT MARKET SHARE ANALYSIS .. 152

TABLES
Table 1: RRUS 12 Interface Connector/Cable Assembly Bill of Materials . 28
Table 2: Interface PCB Top, Bill of Materials 34
Table 3: Interface PCB Bottom, Bill of Materials . 35
Table 4: Power SPD PCB Bill of Materials.. 39
Table 5: Area A Bill of Materials .. 49
Table 6: Area A1 Bill of Materials 51
Table 7: Area A2 Bill of Materials 52
Table 8: Area B Bill of Materials .. 54
Table 9: Area C Bill of Materials .. 56
Table 10: Area D Bill of Materials 58
Table 11: Area E1 Bill of Materials.. 63
Table 12: Area E2 Bill of Materials.. 64
Table 13: Area F1 Bill of Materials .. 68
Table 14: Area F2 Bill of Materials .. 69
Table 15: Area G Bill of Materials 71
Table 16: Area O Bill of Materials 71
Table 17: Area H Bill of Materials 72
Table 18: Area I Bill of Materials . 73
Table 19: Area J Bill of Materials . 75
Table 20: Area K Bill of Materials 77
Table 21: Area L Bill of Materials. 79
Table 22: Area M Bill of Materials 81
Table 23: Area N Bill of Materials 83
Table 24: Area P1 Bill of Materials .. 86
Table 25: Area P2 Bill of Materials .. 86
Table 26: Area Q Bill of Materials 88
Table 27: Area R Bill of Materials 90
Table 28: Area S Bill of Materials 92
Table 29: ROR 101 0001/BB Bill of Materials .. 95
Table 30: ROR 101 0002/AA Bill of Materials .. 98
Table 31: ROR 101 0003/BA Bill of Materials 101
Table 32: ROR 101 0009/AA Bill of Materials 104
Table 33: ROR 101 0010/BA Bill of Materials 107
Table 34: ROR 101 0014/BA Bill of Materials 110
Table 35: PA9F73 Module Bill of Materials . 112
Table 36: PV1F01 Module Bill of Materials . 114
Table 37: E-H14A Module Bill of Materials . 116
Table 38: E-H03B Module Bill of Materials . 118
Table 39: E-H32A Module Bill of Materials . 120
Table 40: VSWR PCB Top Bill of Materials.. 132
Table 41: VSWR PCB Bottom Bill of Materials 133
Table 42: Passive Component Case Size Distribution by System Subsection .. 145
Table 43: Passive Component Case Size Distribution by System Subsection (Modules) .. 147
Table 44: Identified Passive Component Supplier Distribution by System Subsection .. 148
Table 45: Identified Passive Component Supplier Distribution by System Subsection (Modules) .. 149
Table 46: Active/Passive Component Distribution by System Subsection . 151
Table 47: Active Semiconductor/Component Vendor Distribution by System Subsection 153
Table 48: Active Semiconductor/Component Vendor Distribution by System Subsection (Modules). 155

EXHIBITS
Exhibit 1: Ericsson RBS6601 Main-Remote BTS System (L), RRUS 12 (R) . 10
Exhibit 2: RBS6601 Configurations (Star/Cascade) 10
Exhibit 3: Ericsson RRUS 12 B4 System Block Diagram 11
Exhibit 4: RBS6601 Main Unit with DUL 12
Exhibit 5: RRUS 12 Connection Interfaces 13
Exhibit 6: RRUS 12 with Solar Shield Front (L), Front Opened (C) and Solar Shield Back (R) .. 14
Exhibit 7: RRUS 12 Front View with Solar Shield, (External (L) and Internal (R).. 15
Exhibit 8: RRUS 12 Rear View with Solar Shield, External (L) and Internal (R) . 15
Exhibit 9: RRUS 12 Front View with Solar Shield Removed . 16
Exhibit 10: RRUS 12 Front Solar Shield Guide Rails .. 17
Exhibit 11: RRUS 12 Rear View with Solar Shield Removed, Side Strips . 17
Exhibit 12: Side Solar Shield Strips 18
Exhibit 13: RRUS 12 Duplexer Filter Cover, External View .. 19
Exhibit 14: RRUS 12 Duplexer Filter Cover, Internal View .. 19
Exhibit 15: RRUS 12 Status Indicator Flex Cable 20
Exhibit 16: RRUS 12 Top Frame, External View, Filter Cover Removed 20
Exhibit 17: RRUS 12 Top Frame, External View, Filter Removed 21
Exhibit 18: RRUS 12 Top Frame, External View.. 22
Exhibit 19: RRUS 12 Duplexer Filter/Transceiver Connector Interfaces 23
Exhibit 20: RRUS 12 Top Frame, Internal View with PCBs .. 24
Exhibit 21: RRUS 12 Top Frame, Internal View without Interface and SPD PCBs . 25
Exhibit 22: RRUS 12 Top Frame, Internal View without Transceiver/Power Amplifier PCB . 26
Exhibit 23: RRUS 12 Top Frame, Internal View .. 27
Exhibit 24: RRUS 12 Interface Connector/Cable Assembly Location Diagram 28
Exhibit 25: RRUS 12 Cables/Connectors System Block Diagram 29
Exhibit 26: RRUS 12 Rear Frame, External View 30
Exhibit 27: RRUS 12 Rear Frame, Internal View . 31
Exhibit 28: RRUS 12 Rear Frame, Internal View of Thermal Pads/Pedestals .. 32
Exhibit 29: Interface PCB Dimensions 33
Exhibit 30: Interface PCB Component Diagram. Top . 33
Exhibit 31: Interface PCB Component Diagram. Bottom .. 36
Exhibit 32: Power SPD PCB Dimensions 37
Exhibit 33: Power SPD PCB Component Diagram. Top . 38
Exhibit 34: Power SPD PCB Component Diagram. Bottom .. 38
Exhibit 35: RRUS 12 TRx PCB, Top View .. 42
Exhibit 36: RRUS 12 TRx PCB, Bottom View 42
Exhibit 37: RRUS 12 TRx PCB with RF/Digital Connectors, Top View 43
Exhibit 38: RRUS 12 TRx PCB with RF/Digital Connectors, Bottom View . 43
Exhibit 39: RRUS 12 TRx PCB Areas A-I 44
Exhibit 40: RRUS 12 TRx PCB Areas J-S 44
Exhibit 41: RRUS 12 TRx PCB with Ericsson Modules, Top View. 45
Exhibit 42: RRUS 12 TRx PCB with Ericsson Modules, Bottom View.. 45
Exhibit 43: Area A Component Diagram 46
Exhibit 44: Area A1 Component Diagram . 47
Exhibit 45: Area A2 Component Diagram . 48
Exhibit 46: Area B Component Diagram 53
Exhibit 47: Area B Block Diagram .. 53
Exhibit 48: Area C Component Diagram 55
Exhibit 49: Area D Component Diagram 57
Exhibit 50: Area E1 Component Diagram . 59
Exhibit 51: Area E1 Block Diagram, FB-A1 and FB-A2 .. 60
Exhibit 52: Area E1 Block Diagram, RXA .. 60
Exhibit 53: Area E2 Component Diagram . 61
Exhibit 54: Area E2 Block Diagram, FB-B1 and FB-B2 .. 62
Exhibit 55: Area E1 Block Diagram, RXB .. 62
Exhibit 56: Area F1 Component Diagram . 65
Exhibit 57: Area F2 Component Diagram . 66
Exhibit 58: Area F1 TXA Block Diagram. 67
Exhibit 59: Area F2 TXB Path Block Diagram .. 67
Exhibit 60: Area G Component Diagram 70
Exhibit 61: Area O Component Diagram 70
Exhibit 62: Area H Component Diagram 72
Exhibit 63: Area I Component Diagram. 73
Exhibit 64: Area J Component Diagram. 74
Exhibit 65: Area K Component Diagram 76
Exhibit 66: Area L Component Diagram 78
Exhibit 67: Area M Component Diagram .. 80
Exhibit 68: Area N Component Diagram 82
Exhibit 69: Area N Block Diagram .. 82
Exhibit 70: Area P1 Component Diagram . 84
Exhibit 71: Area P2 Component Diagram . 85
Exhibit 72: Area Q Component Diagram 87
Exhibit 73: Area R Component Diagram 89
Exhibit 74: Area R Block Diagram .. 89
Exhibit 75: Area S Component Diagram 91
Exhibit 76: ROR 101 0001/BB R1B Component Diagram . 93
Exhibit 77: ROR 101 0001/BB R1B Block Diagram. 94
Exhibit 78: ROR 101 0002/AA R1C Block Diagram. 96
Exhibit 79: ROR 101 0002/AA R1C Component Diagram . 97
Exhibit 80: ROR 101 0003/BA R1D Block Diagram. 99
Exhibit 81: ROR 101 0003/BA R1D Component Diagram.. 100
Exhibit 82: ROR 101 0009/AA R1D Block Diagram.. 102
Exhibit 83: ROR 101 0009/AA R1D Component Diagram.. 103
Exhibit 84: ROR 101 0010/BA R1E Block Diagram, TXA 105
Exhibit 85: ROR 101 0010/BA R1E Block Diagram, TXB 106
Exhibit 86: ROR 101 0010/BA R1E Component Diagram .. 106
Exhibit 87: ROR 101 0014/BA Block Diagram, TXA. 108
Exhibit 88: ROR 101 0014/BA Block Diagram, TXB. 109
Exhibit 89: ROR 101 0014/BA Component Diagram 109
Exhibit 90: PA9F73 Module Component Diagram . 111
Exhibit 91: PV1F01 Module Component Diagram . 113
Exhibit 92: E-H14A Module Component Diagram. 115
Exhibit 93: E-H03B Module Component Diagram. 117
Exhibit 94: E-H32A Module Component Diagram. 119
Exhibit 95: RRUS 12 Duplexer Filter, Top View 121
Exhibit 96: RRUS 12 Duplexer Filter, Bottom View . 122
Exhibit 97: RRUS 12 Duplexer Filter, Side View 122
Exhibit 98: RRUS 12 Duplexer Filter, Front View . 122
Exhibit 99: RRUS 12 Duplexer Filter Block Diagram 123
Exhibit 100: RRUS 12 Duplexer Filter RF Shield, External View .. 124
Exhibit 101: RRUS 12 Duplexer Filter RF Shield, Internal View 124
Exhibit 102: RRUS 12 Duplexer Filter SMP Connector Locations . 125
Exhibit 103: RRUS 12 Duplexer Filter Resonator Locations .. 126
Exhibit 104: RRUS 12 Duplexer Filter Tx/Rx A and B Paths.. 126
Exhibit 105: RRUS 12 Duplexer Filter VSWR PCB 127
Exhibit 106: RRUS 12 VSWR Cavity Metal Wall Divider, Top View .. 128
Exhibit 107: RRUS 12 VSWR Cavity Metal Wall Divider, Side View . 128
Exhibit 108: RRUS 12 VSWR PCB Component Diagram, Top View.. 129
Exhibit 109: RRUS 12 VSWR PCB Component Diagram, Bottom View .. 130
Exhibit 110: RRUS 12 Duplexer Filter VSWR Signal/Power Connector Dimensions 130
Exhibit 111: RRUS 12 Duplexer Filter VSWR Block Diagram. 131
Exhibit 112: RRUS 12 Duplexer Filter 7/16 DIN Connector Gasket/Washer/Nut. 131
Exhibit 113: RRUS 12 Duplexer Filter Resonator Type Locations. 134
Exhibit 114: RRUS 12 Duplexer Filter with Waveguide Coupler Locations 135
Exhibit 115: RRUS 12 Duplexer Filter Waveguide Coupler Dimensions, Side View. 135
Exhibit 116: RRUS 12 Duplexer Filter Waveguide Coupler Dimensions, Top View.. 135
Exhibit 117: RRUS 12 Duplexer Filter Waveguide Coupler Type A and B Locations 136
Exhibit 118: RRUS 12 Duplexer Filter Waveguide Coupler Type C Locations 136
Exhibit 119: RRUS 12 Duplexer Filter Tx and Rx Launcher Tabs . 137
Exhibit 120: RRUS 12 Duplexer Filter Tx Sampling Circuit 138
Exhibit 121: RRUS 12 Duplexer Filter Tx Sampling Circuit Shield, External View 138
Exhibit 122: RRUS 12 Duplexer Filter Tx Sampling Circuit Shield, External View 139
Exhibit 123: RRUS 12 Duplexer Filter Tx Sampling Circuit, Shield Removed 139
Exhibit 124: RRUS 12 Duplexer Filter TxA Sampling Circuit . 140
Exhibit 125: RRUS 12 Duplexer Filter TxB Sampling Circuit, Top View.. 141
Exhibit 126: RRUS 12 Duplexer Filter TxB Sampling Circuit, Bottom View 141
Exhibit 127: RRUS 12 Duplexer Filter TxA Sampling Circuit PCB, Top View . 142
Exhibit 128: RRUS 12 Duplexer Filter TxA Sampling Circuit PCB, Bottom View .. 142
Exhibit 129: RRUS 12 Duplexer Filter TxA Sampling Circuit PCB, Coupling Path Locations . 143
Exhibit 130: Passive Component Case Size Distribution 144
Exhibit 131: Identified Passive Component Market Share by Vendor. 150
Exhibit 132: Active Semiconductor Component Share 152
Exhibit 133: High Pin Count IC vs. Discretes. 156
Exhibit 134: Active Semiconductor Market Share by Vendor 157
Exhibit 135: High Pin Count (64+) Active Semiconductor Market Share by Vendor .. 158

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