ADF-24G-TX2RX8 Frontend (User Manual)

Transcription

1 Frontend (User Manual) Inras GmbH Altenbergerstraße Linz, Austria Phone: Linz, July 2015

2 Contents 1 Document Version 2 2 Hardware Version GHz MIMO Frontend 3 4 Features of the 24-GHz FMCW Radar System 3 5 Technical Data of the 24-GHz Frontend Mechanical Data Antenna Configuration and Positions Electrical Parameters Frontend Connector List of Abbreviations 12 1 Document Version Version Description Date Author Initial Version Andreas Haderer (AnHa) 2 Hardware Version Board Name HUID Revision Date ADF-24-TX2RX8-D Inras GmbH 2 AnHa

3 3 24-GHz MIMO Frontend In Fig. 1 the block diagram of the 24-GHz frontend with two transmit (TX) and eight receive (RX) antennas is shown. According to the block diagram, an ADF5901 (VCO and two output channels) in conjunction with the ADF4159 (fractional-n frequency synthesizer) is used to generate the FMCW transmit signal. The two transmit antennas (TX 1 and TX 2 ) are fed from the power amplifiers of the ADF5901 and can therefore be activated in an arbitrary sequence. The activation sequence can be programmed with the timing unit and the MIMO sequencer implemented in the FPGA of the Radarbook. The receive path is realized with two ADF5904 (four-channel RX down-converter). Figure 1: Antenna configuration and naming convention for 24-GHz frontend. The LO signal for the receiver chips is provided by the ADF5901 and an additional Wilkinson divider. The naming convention for the transmit chip (ADTX) and the receive chips (ADRX 1 and ADRX 2 ), depicted in the block diagram, is used in the software framework to access the different devices. This is required to program defined activation sequences for the transmit antennas and to configure the receive path. 4 Features of the 24-GHz FMCW Radar System The frontend is designed to operate with the Radarbook and can be configured freely to the needs of the application at hand. The main features of the frontend include ˆ Two TX channels (ADF5901), ˆ Eight RX channels (two ADF5904) with differential IF outputs, ˆ Amplitude power control for the transmit channels, ˆ Differential signals for clock synchronization (input and output of RF clock), and Inras GmbH 3 AnHa

4 ˆ Frontend identification and storage of calibration data by means of an integrated EEPROM. The frontend can be operated with the Radarbook. The Radarbook offers a TCP/IP or a USB 3.0 interface, which can be used to configure the modes of operation for the FMCW radar system. The timing of the FMCW waveform as well as the FMCW ramp parameters can be programmed and the IF signals can be recorded in real-time. The main features provided by the Radarbook include ˆ Sampling rates up to 20 MSPS per IF channel, ˆ FMCW ramp synchronous sampling for precise range-doppler processing, ˆ Arbitrarily programmable FMCW timing including non-uniform ramp scenarios, ˆ MIMO processing with arbitrary antenna activation, ˆ Monitoring of analog test signals for ADTX and ADRX, ˆ Configurable signal processing, and ˆ 100 MBit TCP/IP or USB 3.0 interface. Inras GmbH 4 AnHa

5 PAM600 COM6 COM1 COARx8 PAARx802 COARx7 COR330Rx2 COR190Rx2 PAARx702 PAU50Rx2024 PAU50Rx2022 PAU50Rx2021 PAU50Rx2020 PAU50Rx2018 PAU50Rx2017 PAR330Rx202 PAR190Rx201 PAR330Rx201 PAR190Rx202 COARx6 COC400Rx2 PAC400Rx202 PAC400Rx201 COC410Rx2 PAC410Rx202 PAC410Rx201 PAU50Rx201 COC420Rx2 PAU50Rx203 PAU50Rx204 PAC420Rx202 PAC420Rx201 PAU50Rx205 PAU50Rx207 PAU50Rx208 PAARx602 PAC4602 PAR2002 PAR2301 PAC4702 PAC4802 PAR2401 PAR3701 PAC4601 PAR2001 PAR2302 PAC4701 PAC4801PAR2402PAR2402 PAC4401PAR3702PAR3702 PAC4402 COARx5 COC430Rx2 PAR420IF202 PAR420IF201 PAC640IF201 PAC650IF201 PAC640IF202 PAC650IF202 PAR410IF202 PAR410IF201 PAARx502 PAR420IF102PAR420IF101 PAR420IF101 PAC640IF101 PAC650IF101 PAC640IF102 PAC650IF102 PAR410IF102PAR410IF101 PAR410IF101 PAR420IF402 PAR420IF401 PAC640IF401 PAC650IF401 PAC640IF402 PAC650IF402 PAR410IF402 PAR410IF401 PAR420IF302 PAR420IF301 PAC640IF301 PAC650IF301 PAC640IF302 PAC650IF302 PAR410IF302 PAR410IF301 COARx4 PAARx402 PAR420IF602 PAR420IF601 PAC640IF601 PAC650IF601 PAC640IF602 PAC650IF602 PAR410IF602 PAR410IF601 COC430Rx1 PAR420IF502 PAR420IF501 PAC640IF501 PAC650IF501 PAC640IF502 PAC650IF502 PAR410IF502 PAR410IF501 COX1 PAR420IF802PAR420IF801 PAR420IF801 PAC640IF801 PAC650IF801 PAC640IF802 PAC650IF802 PAR410IF802PAR410IF801 PAR410IF801 COARx3 PAU50Rx1024 PAU50Rx1022 PAU50Rx1021 PAU50Rx1020 PAU50Rx1018 PAU50Rx1017 PAR420IF702 PAR420IF701 PAC640IF701 PAC650IF701 PAC640IF702 PAC650IF702 PAR410IF702 PAR410IF701 PAR330Rx102 PAR190Rx101 PAR330Rx101 PAR190Rx102 PAC6701 PAC6702 COARx2 PAPC103 PAR3601 PAPC102 PAR3602 COC400Rx1 PAC400Rx102 PAC400Rx101 COC410Rx1 PAC410Rx102 PAC410Rx101 PAU50Rx101 PAU50Rx103 COC420Rx1 PAU50Rx104 PAC420Rx102 PAC420Rx101 PAU50Rx105 PAU50Rx107 PAU50Rx108 PAC7201 PAC7202 PAARx202 COPC1 PAPC101 PARA301 PARA302PARA303PARA304 CORA3 PARA303PARA304 PARA305 PARA306PARA307PARA308 PARA307PARA308 COARx1 PARA401 PARA402 CORA4 PARA403PARA404 PARA404 PARA405PARA406 PARA406 PARA407PARA408 PARA408 PAARx102 PAR1802 PAR1801 PARA501PARA502PARA503 CORA5 PARA503 PARA504 PARA505PARA506PARA507 PARA506PARA507 PARA508 PAU805 PAU804 COC58 PAC5801 PAC5802 PAC5701 COC57 PAC5702 COL14 PAR2101 COR21 PAR2102 PARA101PARA102PARA103PARA104 PARA103PARA104 PARA105PARA106PARA107PARA108 PARA106PARA107PARA108 COL5 COATx2 PAC1801 PAC1501 PAC1802 PAC1502 PAATx202 COATx1 PAU208 PAU209 PAU3016 PAU301 PAU207 PAU2010 PAU3015 PAU302 PAU206 PAU2011 PAU3014 PAU303 PAU205 PAU2012 PAU3013 PAU304 COC34 PAU204 PAU2013 PAU3012 PAU305 PAU203 PAU2014 PAU3011 PAU306 PAU202 PAU2015 PAU3010 PAU307 PAR1502 PAR1701 COU3 PAU201 PAU2016 PAU309 PAU308 PAR1501 PAR1702 COL9 COR11 PAR1002PAR1001 COR10 PAR3101 PAR1101 PAR1102 PAR1001 PAC3101 COC31 PAC3102 PAC3901 PAR1601 COC32 COC1 COL1 PAR3102 PAC3201 PAC3202 PAR1602 PAC101 PAC102 COC8 PAC3301 COC33 PAC3302 PAR1301 PAC201 COC2 PAC202 PAR202 COR2 PAU4016 COU4 PAU4025 PAR1302 PAC301 COC3 PAC302 COU1 PAR201 PAU4015 PAU4026 PAU1013 PAU4014 PAU4027 PAU105 PAU1014 PAU4013 PAU4028 PAU104 PAU1015 PAU4012 PAU4033 PAU4029 PAU103 PAU1025 PAU1016 PAU4011 PAU4030 PAC2502 PAU102 PAU1017 PAU4010 PAU4031 PAU101 PAU1018 PAU409 PAU4032 PAC2501 PAC602PAC702PAC702 PAC502 COC6 PAC601PAC701 PAC701 PAC501 PAC2702 PAC2802 PAC2902 PAC2202 PAR702 PAC2701 PAC2801 PAC2901 PAC2201 PAR701PAR601PAR601 COR6 PAR602 PAC1901 COR3 PAR301 PAC1102 PAR502 PAR902 COR9 PAC1001 PAC901 COC20 PAC3701 PAC3801 PAC2102 PAC1902 PAR302PAC1101 PAR501 PAR901PAC1002 PAC902 PAC2302 PAC2402 PAC2101 COR8 COR12 COL3 PAC2301 PAC2401 PAR802 PAR801 PAR1202 PAR1201 PAC3602 PAC1402 PAR1401 PAC3601 PAC1401 PAR101 COR1 PAR1402 PAC3502 PAC1302 PAR102 PAC3501 PAC1301 COU7 PAR3002 COR30 PAR3001 PAR3401 PAR3402 COR22 PAR2201 PAR2202 PAR2802 PAU801 PAU1105 PAU1101 PAR3202 PAR2801 PAU802 COU11 PAU1102 PAR3201 PAU803 PAU1104 PAU1103 COU8 PARA601PARA602PARA603 CORA6 PARA603 PARA604 PARA605PARA606PARA607 PARA606PARA607 PARA608 COY2 PARA201 PARA202PARA203PARA204 CORA2 PARA203 PARA205 PARA206PARA207PARA208 PARA207 COR27 PAR2701 PAR2702 PAR3902 PAR3802 PAR3901 PAR3801 COU9 PAR402 COR4 PAR401 PAATx101PAATx102 PAATx102 PAR3501 COR35 PAR3502 COL13 PAC5601 PAC5602 PAC6202 PAC6201 PAC1701 PAC1601 PAC1702 PAC1602 COC55 COL6 COM2 COM4 PAC5401 PAC5301 PAC5402 PAR2602 COR26 PAR2601 PAC5302 PAR2502 COC49 PAC4901 PAC4902 PAR2501 PAC5002 PAC5102 PAC5101 PAC5001 COU6 COL15 COM5 ADF-24G-TX2RX8 5 Technical Data of the 24-GHz Frontend In the following sections the mechanical and the electrical parameters of the frontend are summarized. 5.1 Mechanical Data The frontend is built to interface with the Radarbook. In Fig. 2 the dimensions of the board as well as the position of the mounting holes are depicted. In Tab. 1 the dimensions of the frontend and PAM100 PAM200 PAM400 PAARx801 PAU50Rx2025PAU50Rx2026PAU50Rx2027 PAU50Rx2023 PAU50Rx2019 COU50Rx2 PAU50Rx2033 PAARx701 PAU50Rx2025PAU50Rx2026PAU50Rx2027PAU50Rx2028PAU50Rx2029PAU50Rx2030 PAU50Rx2028PAU50Rx2029PAU50Rx2030 PAU50Rx2031PAU50Rx2032 PAU50Rx2032 PAU50Rx202 PAU50Rx206 PAU50Rx2016PAU50Rx2015PAU50Rx2014PAU50Rx2013PAU50Rx2012PAU50Rx2011 PAU50Rx2015PAU50Rx2014PAU50Rx2013PAU50Rx2012PAU50Rx2011 PAU50Rx2010PAU50Rx209 PAU50Rx209 PAARx601 COL100Rx2 PAL100Rx201 PAL100Rx202 PAC7302 PAC7301 COC73 PAC430Rx202 PAC430Rx201 PAARx501 PAC430Rx101 PAARx401 PAC430Rx102 PAU50Rx1025PAU50Rx1026PAU50Rx1027 PAU50Rx1023 COU50Rx1 PAU50Rx1019 PAU50Rx1033 PAARx301 COR330Rx1 COR190Rx1 COR36 PAU50Rx1025PAU50Rx1026PAU50Rx1027PAU50Rx1028PAU50Rx1029 PAU50Rx1028PAU50Rx1029 PAU50Rx1030PAU50Rx1031PAU50Rx1032 PAU50Rx1031PAU50Rx1032 PAU50Rx1024 PAU50Rx102 PAU50Rx106 PAU50Rx1016PAU50Rx1015PAU50Rx1014PAU50Rx1013PAU50Rx1012 PAU50Rx1015PAU50Rx1014PAU50Rx1013PAU50Rx1012 PAU50Rx1011PAU50Rx1010PAU50Rx109 PAU50Rx1010PAU50Rx109 PAARx201 COL100Rx1 PAL100Rx101 PAL100Rx102 PAARx101 PAL501 PAL502 COC18 COC15 PAC3401 PAC3902 PAL901 PAL902 COC39 PAC3402 COR15 COR17 COR16 PAU4017PAU4018PAU4019 PAU4018PAU4019 PAU4020PAU4021PAU4022 PAU4021PAU4022 PAU4023PAU4024 PAU4024 COR31 PAC401 PAC402 COC4 PAL102PAL101 PAL101 PAL402 COC25 COL4 PAU408 PAU406 PAU405PAU404PAU403 PAU403 PAU401 PAL401 PAU407 PAU101 PAU402 PAU1024PAU1023 PAU1023 PAU1022PAU1021PAU1020 PAU1021PAU1020 PAC3002 PAL802 COL8 COC27 COC28 COC29 PAC3702 PAC3802 COC22 COR7 COC30 PAL801 PAC2701 PAC2801 PAC2901 COC37 COC38 COC19 PAC2001 PAC2002 PAC3001 PAL702 COL7 COC23 COC24 COC21 PAL701 PAC2602COC26PAC2601 PAC2601 PAATx201 PAATx101 COU2 COR13 COC17 COC16 PAU106PAU107PAU108 PAU109PAU1010PAU1011 PAU1010PAU1011 PAU1012 PAU1019 COC11 PAL602 PAL601 PAC801 PAC802 COC7 COC5 PAL201 COL2 PAL202 COR5 COC10 COC9 PAL301 PAL302 PAC1201 COC12PAC1202 PAC7002 COC70PAC7001 PAU1004 PAU1005 COU10 PAU1003 PAU1002 COC69PAC6901 PAU1001 PAC6902 PAL1502 PAL1501 COM3 PAM300 COC46 COR20 COR23 COC47 COC48 COR24 COR37 COC44 COR420IF2 COR420IF1 COR420IF4 COR420IF3 COR420IF6 COR420IF5 COR420IF8 COR420IF7 COC640IF2 COC650IF2 COC640IF1 PAC650IF101COC650IF1 COC640IF4 COC650IF4 COC640IF3 COC650IF3 PAC640IF601COC640IF6 PAC650IF601COC650IF6 COC640IF5 COC650IF5 COC640IF8PAC650IF801COC650IF8 COC640IF7 PAC650IF701COC650IF7 COR410IF2 COR410IF1 COR410IF4 COR410IF3 COR410IF6 COR410IF5 COR410IF8 COR410IF7 PAC7101 COC71 PAC7102 COC67 PAX102 PAX104 PAX106 PAX108 PAX1010 PAX1012 PAX1014 PAX1016 PAX1018 PAX1020 PAX1022 PAX1024 PAX1026 PAX1028 PAX1030 PAX1032 PAX1034 PAX1036 PAX1038 PAX1040 PAX1042 PAX1044 PAX1046 PAX1048 PAX1050 PAX1052 PAX1054 PAX1056 PAX1058 PAX1060 PAX1062 PAX1064 PAX1066 PAX1068 PAX1070 PAX1072 PAX1074 PAX1076 PAX1078 PAX1080 PAX100 PAX1081 PAX1082 PAX101 PAX103 PAX105 PAX107 PAX109 PAX1011 PAX1013 PAX1015 PAX1017 PAX1019 PAX1021 PAX1023 PAX1025 PAX1027 PAX1029 PAX1031 PAX1033 PAX1035 PAX1037 PAX1039 PAX1041 PAX1043 PAX1045 PAX1047 PAX1049 PAX1051 PAX1053 PAX1055 PAX1057 PAX1059 PAX1061 PAX1063 PAX1065 PAX1067 PAX1069 PAX1071 PAX1073 PAX1075 PAX1077 PAX1079 COC72 COR18 CORA1 COC36 COC14 COR14 COC35 COC13 PAU705PAU706PAU707PAU708PAU706PAU707PAU708 PAL1401 PAL1402 PAU704PAU703PAU702PAU701 PAU703PAU702PAU701 PAY203 COR34 COR32 COR28 PAY204 COR39 PAU905 PAY102 COR38 PAU906 PAY201 PAY202 PAU907 PAU908 PAU904 PAU903 PAU902 PAU901 PAL1301 PAL1302 COC56 PAC5502 PAY101 COC62 PAC6301 COC63 PAC6302 PAC5501 PAY103 PAY104 COY1 PAC6602 PAC6601 COC66 PAC6802COC68PAC6801 PAC6801 COC54 PAL1201 PAL1202 COL12 COC50 PAC5202 COC52 PAC5201 COC51 COC53 PAM500 COR25 PAU601PAU602PAU603PAU604 PAU602PAU603PAU604 PAU608PAU607PAU606PAU605 PAU607PAU606PAU605 Figure 2: Dimensions of the 24-GHz frontend including the position of the mounting holes. its weight are summarized. The frontend is very lightweight as no additional heat sink is integrated on the frontend. Parameter Substrate RF-Substrate thickness Dimension x-direction Dimension y-direction Weight frontend Weight (frontend and Radarbook) Weigth (frontend, Radarbook, and housing) Value RO mm 100 mm 100 mm 40 g 177 g 410 g Table 1: Mechanical parameters of the 24-GHz frontend. An Altium template containing the contour and position of the frontend connector is available on request. Inras GmbH 5 AnHa

6 5.2 Antenna Configuration and Positions The positions of the transmit and receive antennas are shown in Fig. 3. The origin of the Cartesian coordinate system is located at the first transmit antenna TX 1. In Tab. 2 the x-coordinates of the antennas are summarized. All mentioned positions are in mm. Due to the size constraint for Figure 3: Antenna positions of the 24-GHz RF frontend. the frontend it is not possible to generate a larger array by switching between the two transmit antennas. TX Antenna x-position (mm) RX Antenna x-position (mm) TX RX TX RX RX RX RX RX RX RX Table 2: Positions of transmit and receive antennas. The receive and transmit antennas are built by serial fed patch antennas with eight elements, which are fed from the backside of the PCB. In Fig. 4 the realized gain for the E- and H-plane of a single antenna element are shown. In Tab. 3 the parameters of the antennas are summarized. Parameter Value G Realized Gain 13.2 dbi S Sidelobe suppression -18 db Θ H Horizontal 3 db beamwidth 76.5 Θ V Vertical 3 db beamwidth 12.8 Table 3: Antenna parameters. Inras GmbH 6 AnHa

7 Figure 4: Realized gain for the antenna elements at GHz. Inras GmbH 7 AnHa

8 5.3 Electrical Parameters In Tab. 4 the electrical parameters of the frontend are specified. Parameter Condition Min Typ Max Unit V C1 Supply Voltage C V V C2 Supply Voltage C2 not used V V C3 Supply Voltage C V I C1 Supply Current 3.3 V / all TX enabled ma I C2 Supply Current 5.0 V ma I C3 Supply Current 3.3 V ma P t Max RF Output Power 8 dbm TX ON/OFF Isolation - 30 db f t Transmit Frequency GHz TX-RX Isolation - TBD Table 4: Electrical parameters of the 24-GHz frontend. For a more detailed description of the electrical parameters refer to the data sheet of the transceivers (ADF5901 and ADF5904) from Analog Devices. Inras GmbH 8 AnHa

9 5.4 Frontend Connector The RF connector is used to interface the frontend with the Radarbook. The connector supports three programmable supply voltages, 24 digital control signals for the configuration of the frontend, 12 differential IF signals, and four analog signals for status monitoring. In Fig. 5 the schematic of the connector is shown. Figure 5: Schematic of the frontend connector. The digital control signals are used for operating and testing the FMCW frontend. The digital signals require a 3.3 V CMOS standard. The configuration of the receivers (ADRX), the synthesizer, and the transmitter (ADTX) is done with an SPI interface. The devices share a common SPI interface named (Spi). Inras GmbH 9 AnHa

10 PIN Signal Radarbook Signal Frontend Description 74 FpIO HS1 ADF4159.Trig Trigger signal 72 FpIO HS2 - Not used 70 FpIO HS3 ADF5901MuxOut ADF5901 Mux Output signal 68 FpIO HS4 - Not used 73 FpIO HS5 Spi.PllCe ADF4159 Chip Enable 71 FpIO HS6 Spi.PllEna ADF4159 Latch Enable 69 FpIO HS7 ADF4159.MuxOut ADF4159 Mux Output 67 FpIO HS8 DacSpi.Si DAC Slave In (DAC not assembled) Table 5: Digital control signals for operating the FMCW frontend. PIN Signal Radarbook Signal Frontend Description 66 FpIO LS1 - Not used 65 FpIO LS2 DacSpi.Clk DAC clock (DAC not assembled) 62 FpIO LS3 Spi.So Spi slave output 61 FpIO LS4 DacSpi.Ena DAC SPI enable (DAC not assembled) 60 FpIO LS5 Spi.TxEna ADF5901 SPI enable 59 FpIO LS6 - Not used 58 FpIO LS7 Spi.Si Spi slave input 57 FpIO LS8 - Not used 56 FpIO LS9 Spi.Clk Spi clock 55 FpIO LS10 - Not used 54 FpIO LS11 Spi.TxCe ADF5901 chip enable 53 FpIO LS12 EEP.Sda EEPROM Serial data 52 FpIO LS13 Spi.Rx1Ena ADRX1 ADF5904 Spi enable 51 FpIO LS14 EEP.Scl EEPROM Serial clock 50 FpIO LS15 Spi.Rx2Ena ADRX2 ADF5904 Spi enable 49 FpIO LS16 EEP.S3V3 EEPROM supply voltage Table 6: Digital control signals for operating the FMCW frontend. PIN Signal Radarbook Signal Frontend Description 8,10 IFG1.IF1 P N IF.4 P N IF signal RX5 4,6 IFG1.IF2 P N IF.3 P N IF signal RX6 31,33 IFG1.IF3 P N IF.6 P N IF signal RX8 27,29 IFG1.IF4 P N IF.5 P N IF signal RX7 32,34 IFG2.IF7 P N IF.8 P N IF signal RX1 28,30 IFG2.IF8 P N IF.7 P N IF signal RX2 24,26 IFG2.IF9 P N IF.2 P N IF signal RX3 20,22 IFG2.IF10 P N IF.1 P N IF signal RX4 Table 7: Analog IF signals for the receive channels. Inras GmbH 10 AnHa

11 PIN Signal Radarbook Signal Frontend Description 7 IfAna.VAna2 IntMon.RX1 ADRX1 Analog test 5 IfAna.VAna3 IntMon.RX2 ADRX2 Analog test 3 IfAna.VAna4 IntMon.TX ADTX Analog test Table 8: Monitoring signals (analog) for the 24-GHz frontend. Inras GmbH 11 AnHa

12 6 List of Abbreviations FIFO... First In First Out FMCW... Frequency-Modulated Continuous Wave FPGA... Field Programmable Gate Array MMP... Memory Mapped Peripheral MIMO... Multiple Input Multiple Output MISO... Master In Slave Out MOSI... Master Out Slave In RF... Radio Frequency RX... Receive SEQTRIG... Sequence Trigger Unit SPI... Serial Peripheral Interface TX... Transmit USPI... Universal Serial Peripheral Interface Inras GmbH 12 AnHa