Updated File Rev. UE RF Band4 HW Manual Written by Reviewed by Granted by Title Type LEO3 RF (AWS) Hardware Manual 1 2 3 4 Managed by Manual ABSTRACT This document is a hardware RF board manual for LTE user equipment platform. Contents of this document are the description of each blocks and usage directions. It is recommended to peruse this manual before operating RF Board.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 [Notice] 1. The product described in this manual may be modified without prior notice for reliability, functionality or design improvement. 2.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 CONTENTS 1 Introduction................................................................................................................................ １ 1.1 Scope ..................................................................................................................................... １ 1.2 Terminology..................................................................................................
Updated File Rev. UE RF Band4 HW Manual 1 2 3 4 5 6 7 8 9 FIGURES Figure 1: Photograph of LEO3 RF ................................................................................................... ３ Figure 2: RF Block Diagram (For RX/TX) ........................................................................................ ４ Figure 3: Diagrams of Power supply................................................................................................
Updated File Rev. UE RF Band4 HW Manual 1 1 Introduction 2 3 1.1 Scope 4 5 6 7 8 This RF board is intended for radio frequency part of LTE user equipment platform to develop and verify LTE user equipment modem. This RF board is connected to 3rd version of LTE user equipment platform (LEO3) as the form of daughter board. This document intends to describe the brief architecture and usages of the board designed as RF part of LEO3 platform. 9 10 11 1.
Updated File Rev. UE RF Band4 HW Manual 1 2 2 Features and Photograph 3 4 2.1 Features 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 2.2 Supporting RF band: UMTS BAND-4(AWS) Transmitting Frequency band: 1,710~1,755 MHz (45MHz) Receiving Frequency band: 2,110~2,155 MHz (45MHz) 2-Receive path and 1-Transmit path (MISO) +6V dc main power supply 19.
Updated File Rev. UE RF Band4 HW Manual 1 2 Figure 1: Photograph of LEO3 RF 3 4 - Mechanical size of board is 170 (W) X 170 (H) mm 5 LGE Proprietary ３ MCTR Lab.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 Block Diagram and Description 3 1.4-1.6V 1.71-3.0V 2.7-3.0V 2.7-3.0V 2.7-3.0V 2.7-3.0V Block Diagram (AWS) 1.4-1.6V 3.1 1.71-3.0V 4 5 6 7 8 Figure 2: RF Block Diagram (For RX/TX) 9 10 11 3.2 Block Description 12 13 3.2.1 RX Blocks 14 15 16 17 Two receive paths, RX0 path and RX1 path, are designed for MISO technology to increase the receiving data throughput.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 4 5 6 - 7 8 9 10 11 12 13 - Gain switching time: under 6 us LNA2 Gain: 0/-6/-12 dB Gain deviation: +/-3 dB NFDSB:12dB – 42dB IP1dB: -15dBm Support frequency: Band4: 2,110MHz ~ 2,155MHz ADC Dual 10-bit, 150MSPS analog-to-digital converter 10-bit dedicated for each I/Q data A/D clock speed: 61.
Updated File Rev. UE RF Band4 HW Manual 1 2 - Low Loss: 0.3 dB @ 900 MHz Low Cost SOT-25 Package 3 4 5 6 - Power Amplifier Operating frequency: 1,710 ~ 1,785MHz Max output power: 28.5dBm 7 14 TX LO TX PLL settling time: 325us(initial) TX PLL settling ime: 150us (Handover) VCO’s+frac-N PLL’s+loop filters on chip For bands I, II, III, IV and IX the desired frequency is programmed by setting the distance, in multiples of 100 kHz, from the fixed frequency offset of 1404 MHz.
Updated File Rev. UE RF Band4 HW Manual 1 2 4 Interface 3 4 5 6 7 The RF board for interfacing with LEO3 platform has 3 units of high speed 120pin connector. One of them has the role for main power supply, 6V. The others make the interface between RF to baseband (LEO3 platform) such as data transmitting and receiving, programming the SPI device, transmitting control signals, supplying A/D or D/A clock, monitoring the status and etc. 8 9 4.
Updated File Rev. UE RF Band4 HW Manual 1 2 4.2 Digital I/Q Data & Sampling Cock 3 4 5 6 Figure 4: Diagrams of Data & Clock Signal Interface 7 8 9 10 4.3 SPI 11 12 13 14 15 16 17 18 There are 3 programmable devices on RF board by using 3 wire SPI interface. 3 units SPI blocks exist on the interface with baseband platform. They are listed at Table 1 (Also refer to block diagram at Figure 5). st nd At this list, 1 transceiver and 2 transceiver consist of each SPI0 and SPI1.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 4 5 Figure 5: Diagram of SPI interface 6 7 8 9 4.4 Control signals (GPIO’s) 10 11 For control the RF blocks, the control signals from LEO3 platform are connected as the below.
Updated File Rev. UE RF Band4 HW Manual 1 2 3 Figure 6: RX I/Q data probing Interface 4 5 5 Placement Map 6 PAM LDO DC Jack SPI Header L/T 10bit DAC 10bit ADC Probing con. Antenna0 First Transceiver LDO LDO TCXO Second Transceiver 10bit ADC LEDs Antenna1 7 8 Figure 7: Top placement map of LEO3 RF (AWS) 9 LGE Proprietary １０ MCTR Lab.
Updated File UE RF Band4 HW Manual 1 Notice 2 3 OEM integrators and installers are instructed that the phrase. This device contains 4 Warning: Exposure to Radio Frequency Radiation The radiated output power of this device is far below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact during normal operation is minimized.
