Design Analysis Huawei Technologies WCDMA 2100MHz RRH3801C 20W Remote Radio Unit

• Publication date: June 2012
• Report size: 61 pages

Design Analysis Huawei Technologies WCDMA 2100MHz RRH3801C 20W Remote Radio Unit This report covers the design analysis of a Huawei Technologies WCDMA 2100MHz 3801C 20W Remote Radio Unit. This unit is part of the DBS3800 WCDMA base station platform for Huawei Technologies. The unit was manufactured in Q3 2005. Key Findings: The RF power amplifier was a separate bolt in module. Huawei used a third party po...

Design Analysis Huawei Technologies WCDMA 2100MHz RRH3801C 20W Remote Radio Unit

This report covers the design analysis of a Huawei Technologies WCDMA 2100MHz 3801C 20W Remote Radio Unit. This unit is part of the DBS3800 WCDMA base station platform for Huawei Technologies. The unit was manufactured in Q3 2005.

Key Findings:

The RF power amplifier was a separate bolt in module.
Huawei used a third party power supply for the unit.
The duplexer filter incorporates the LNA receiver matrix for the transceiver.
Custom VCO modules are used for the transmit and receive timing

Component and semiconductor suppliers mentioned in this report include: Analog Devices, Altera, Anaren Microwave, AVX, Atmel, Avago Technologies, Coilcraft, Fairchild Semiconductor, Freescale Semiconductor, Fujitsu Microelectronics, Hittite Microwave, Infineon Technologies, Integrated Device Technology, International Rectifier, Linear Technology, Maxim Integrated Products, Micron, National Semiconductor, NDK, Nippon Chemi-Con, NXP Semiconductors, ON Semiconductor, RF MicroDevices, Rubycon Skyworks Solutions, STMicroelectronics, Texas Instruments, Vishay and Xilinx.

Features

Complete Part Number/Marking
Component Manufacturer Identification
Function Component Description
Package Type
Total Pages: 78
Total Tables: 16
Total Exhibits: 75

Important Note: There is NO component pricing contained within the report.

Electronic Component And Semiconductor Industry in the United States

TABLE OF CONTENTS

EXECUTIVE SUMMARY ...6
Active/Passive Component Summary 6
Important Note: 6
CHAPTER 1: HUAWEI DBS3800 UMTS W-CDMA BBU/RRU SYSTEM.7
1.1 Overview of DBS3800 Platform... 7
CHAPTER 2: MECHANICAL ANALYSIS..9
Mechanical Analysis 9
CHAPTER 3: TRX SUBSYSTEM ... 18
Digital Processor and TRx PCB 18
Main Power Distribution/Control Panel..21
TRx RF Shield...27
Area A1: RRU Baseband Signal Processing/Error Correction 29
Area A2: Transport Interface/Baseband Signal Processing...31
Area B: RRU Diversity Receiver ...34
Area C: TX Feedback Loop, RF Transmitter and RRU Timing 37
Area D1: Baseband Signal Processing Support ..40
Area D2: Transport Interface Support ..42
CHAPTER 4: RRU RF AMPLIFIER SUBSYSTEM . 44
CHAPTER 5: RRU DUPLEXER CAVITY FILTER RF SUBSYSTEM 51
CHAPTER 6: RF LNA . 57
CHAPTER 7: RRU POWER SUPPLY... 66
APPENDIX A - PASSIVE CASE SIZE ANALYSIS.. 69
APPENDIX B - ACTIVE COMPONENT MARKET SHARE ANALYSIS .. 73

TABLES

Table 1: RRU RF/Digital Cable Listing . 17
Table 2: Power Distribution Circuit, Top Bill of Materials 23
Table 3: Power Distribution Circuit, Bottom Bill of Materials... 26
Table 4: Area A1 Bill of Materials ... 30
Table 5: Area A2 Bill of Materials ... 32
Table 6: Area B Bill of Materials . 36
Table 7: Area C Bill of Materials . 39
Table 8: Area D1 Bill of Materials ... 41
Table 9: Area D2 Bill of Materials ... 43
Table 10: RRU RF Power Amplifier Bill of Materials ... 50
Table 11: LNA Module Top Bill of Materials .. 65
Table 12: LNA Module Bottom Bill of Materials . 65
Table 13: Passive Component Case Size Distribution by System Subsection 70
Table 14: Identified Passive Component Supplier Distribution by System Subsection 71
Table 15: Active/Passive Component Distribution by System Subsection. 72
Table 16: Active Semiconductor/Component Vendor Distribution by System Subsection ... 74

EXHIBITS

Exhibit 1: Huawei BBU3806.7
Exhibit 2: Huawei DBS3800 BBU/RRU 3 Sector Site Example...8
Exhibit 3: Huawei RRU3801C System Block Diagram..8
Exhibit 4: RRU Sun Shield External and Internal View.9
Exhibit 5: RRU with Sun Shield .. 10
Exhibit 6: RRU Front View . 11
Exhibit 7: RRU Rear View.. 11
Exhibit 8: RRU Side View, Left ... 12
Exhibit 9: RRU Side View, Right . 12
Exhibit 10: RRU Top View 13
Exhibit 11: RRU Bottom View 13
Exhibit 12: RRU Internal View 14
Exhibit 13: RRU Housing, Internal View, TRx Side 15
Exhibit 14: RUS Housing, Internal View, Power Amplifier/Duplexer Filter Side.. 16
Exhibit 15: RRU RF/Digital Cable Schematic 17
Exhibit 16: RRU TRx PCB, Top View 19
Exhibit 17: RRU TRx PCB, Bottom View... 20
Exhibit 18: RRU CPRI Interface/Control Panel .. 21
Exhibit 19: Power Distribution Component Diagram, Top .. 22
Exhibit 20: Power Distribution Component Diagram, Bottom . 25
Exhibit 21: TRx RF Shield External View.. 27
Exhibit 22: TRx RF Shield Internal View .. 28
Exhibit 23: Area A1 Component Diagram 29
Exhibit 24: Area A2 Component Diagram 31
Exhibit 25: Area B Component Diagram.. 34
Exhibit 26: Area B Block Diagram .. 35
Exhibit 27: Area C Component Diagram.. 37
Exhibit 28: Area C Block Diagram .. 38
Exhibit 29: Area D1 Component Diagram 40
Exhibit 30: Area D2 Component Diagram 42
Exhibit 31: RRU RF Amplifier Subsystem. 44
Exhibit 32: RF Power Amplifier RF Ports Location Diagram. 45
Exhibit 33: RRU RF Power Amplifier Mounting Diagram. 46
Exhibit 34: RRU RF Power Amplifier Heat Sink . 46
Exhibit 35: RF Power Amplifier RF Shield, External View ... 47
Exhibit 36: RF Power Amplifier RF Shield, Internal View 47
Exhibit 37: RF Power Amplifier Heat Sink, Side and End Views... 48
Exhibit 38: RRU RF Power Amplifier Tx Path Block Diagram... 48
Exhibit 39: RRU RF Power Amplifier Component Diagram.. 49
Exhibit 40: RRU Duplexer Filter, Top View... 51
Exhibit 41: RRU Duplexer Filter, Bottom View.. 52
Exhibit 42: RRU Duplexer Filter, Side View.. 52
Exhibit 43: RRU Duplexer Filter RF Shield, Top View. 53
Exhibit 44: RRU Duplexer Filter RF Shield, Bottom View 53
Exhibit 45: Duplexer Filter 7/16 DIN Connectors .. 54
Exhibit 46: RRU Duplexer Filter Tx/Rx Paths 55
Exhibit 47: Duplexer Filter Waveguide Coupler Elements... 55
Exhibit 48: ANT_TXRXA Connector Housing. 56
Exhibit 49: ANT_TXRXA Connector Monitoring Circuit ... 56
Exhibit 50: RRU LNA. 57
Exhibit 51: LNA End View with RF Shield. 57
Exhibit 52: LNA with RF Shield Removed, Top View.. 58
Exhibit 53: LNA with RF Shield Removed, End View.. 58
Exhibit 54: LNA SMA-SMA Semi Rigid Coaxial Cables 59
Exhibit 55: LNA Module Supports ... 59
Exhibit 56: LNA Module, Opened 60
Exhibit 57: LNA Module Housing, Internal View, Top and Bottom ... 60
Exhibit 58: LNA Module Housing, External View, Top and Bottom... 60
Exhibit 59: LNA Module Dimensions and RF Connector Identification, Top View 61
Exhibit 60: LNA Module Dimensions and RF Connector Identification, Bottom View... 61