TangerineSDR Data Enginearrlwcf.org/download/wcftechcon2021/TECHCON2021... · 2021. 2. 27. ·...

© 2021 Scotty Cowling WA2DFI

TangerineSDR

Data Engineand

Overall Architecture

Scotty Cowling, WA2DFIWCF TechCon

February 27, 2021

1


What is a TangerineSDR radio?

A TangerineSDR radio:

❑ Satisfies numerous use-cases, from space science to

general amateur use to academic research

❑ Has wide-range cost-based performance

❑ From $300 to $1000+ (typical ~$500)

❑ Is based upon an open source model (OHL/NCL

hardware, GPL software)

❑ Advances the State of the Radio Art

2


What is a TangerineSDR radio?

A TangerineSDR radio has the following features:

❑ Small footprint, reasonably low power consumption

❑ Extremely modular, configurable and expandable

❑ Simple web-based User Interface

❑ Local display

❑ Built-in networking interface to data cloud

3


System Architecture

❑ HamSCI Personal Space Weather Station (PSWS)

❑ Phase 4 Satellite Ground Station (P4G)

❑ Academic uses to teach SDR and FPGA techniques

❑ Amateur Communications SDR

❑ Experimenters’ (Amateur and non-Amateur) SDR

❑ Remote Ham Radio

❑ Others?

Target Applications (Use Cases)

4


System Architecture

❑ PSWS should provide some amateur radio features

❑ Easy to use local Web interface

❑ Propagation information (WSPRnet, RBN)

❑ Built-in digital modes (FT8)

❑ Ability to monitor digital modes concurrently with PSWS data

acquisition

❑ Multiple bands simultaneously

❑ Special features, such as e-mail notification of heard station(s)

General Amateur User Benefits

5

6

Personal Space Weather StationServer Data Engine

50K LE FPGA

5Gb/s USB 3.0

2x GbE

HamSCI

Public

Database

Internet

Client Computer

(Single Board or Desktop)

• Local User Display(s)

• Local Data Storage

• Local Data Reduction

• Processed Data to HamSCI Servers

GPSDO

Not Used

Mid-grade RX

Dual 14b ADC

122.88Msps

Magnetometer

I2C

SPI

UART

GbE

GbE

GbE



So What

Are We

Going to

Build?

7


TangerineSDR System

System Architecture

8


If you can’t dazzle them with brilliance,

baffle them with bull.

--W.C. Fields

If you can’t baffle them with bull, dazzle

them with details.

--WA2DFI

Aphorism, Adage, Proverb?

9


TangerineSDR System

Hardware Features

10


Hardware Features

❑ Altera/Intel 10M50DAF672I6G FPGA 50K LEs

❑ 512MByte (256Mx16) DDR3L SDRAM

❑ 4Mbit (512K x 8) QSPI serial flash memory

❑ 512Kbit (64K x 8) serial EEPROM

❑ mSDXC memory card up to 2TByte

TangerineSDR DE Features

11


Hardware Features

❑ 11-15V wide input, low noise SMPS

❑ 3-port GbE Switch (Dual GbE data interfaces)

❑ Cryptographic processor with key storage

❑ Temperature sensors (FPGA, ambient)

❑ Power-on reset monitor, fan header

TangerineSDR DE Features

12


TangerineSDR System

Hardware Features

13


Hardware Features

❑ Two 140-pin MEC RF Module (RFM) sockets (up to 1.5GB/s)

❑ One TX and one RX RFM or

❑ Two RX RFMs or

❑ One double-wide TRX RFDM

TangerineSDR RF Modules

14


Hardware Features

❑ AD9648-125 dual 14-bit 122.88Msps ADC

❑ 0dB/10dB/20dB/30dB remotely switchable attenuator

❑ LTC6420-20 20dB LNA

❑ Fixed 55MHz Low Pass Filter

❑ Optional user-defined plug-in filter

❑ On-board, switchable 50-ohm calibration noise source

❑ On-board low-noise power supplies

❑ Dual SMA antenna connectors

TangerineSDR PSWS/HF RX Module

15


Hardware Features

TangerineSDR PSWS/HF RX Module

HF RX MODULE

M.2

CONN

(140 PIN)

AD9648-125

FILTER

OPTION

TO

DATA

ENGINE

CLK

FILTER

OPTION

3

SPI

2

+3.3VA

+1.8VA

+5V

REG

2

SPI

2

SPI

+3.3V

50-OHM

NOISE

SOURCE

10 dB

0 dB

ATN SEL

20 dB

20 dB

10 dB

0 dB

ATN SEL

2

REG

+1.8V

+12V

LPF

ID/

CRYPTO

+12V

SPI

EXP

2

2

LT6420-20SMA

1

2

SMA

1

2

14b ADC

LPF

14b ADC

100kH

z -

60M

Hz

An

ten

nas

LVDS OVF

LVDS CLK

LVDS DATA

REV XA3

2

28

16


Hardware Features

❑ P4G RX and P4G TX modules or P4G TRX single module

❑ AD9361 MIMO transceiver module (70MHz – 6GHz)?

❑ Lime LMS7002M SDR Module (100kHz – 3.8GHz)?

❑ Lime LMS8001+ SDR Module (100kHz – 12GHz)?

Future TangerineSDR RF Modules

17


Hardware Features

Special thanks to Tom McDermott, N5EG for lending

us his RF expertise to make this exceptional RF

module

TangerineSDR RF Modules

18


TangerineSDR System

Hardware Features

19


Hardware Features

❑ On-board, lowest cost TCXO

❑ Adequate performance for most

applications

❑ Lowest cost

❑ Eliminates need for Clock Module

Yes, we have no Clock Modules

20


Hardware Features

❑ SynthDO Clock Module for Improved Performance

❑ High performance TCXO (e.g., Rakon RPT7050A)

❑ Squaring/anti-jitter circuitry (LTC-6957)

❑ High performance synthesizer/multiplier (Si5345A)

❑ Three GPS options

❑ High-Performance GPS (Ublox ZED-F9T: ~$190)

❑ Mid-performance GPS (Ublox NEO-M8T: ~$50)

❑ Entry-level GPS (Ublox Neo-M9N: ~$15)

❑ Interface board to use CKM as lab instrument (coming soon)

TangerineSDR SynthDO Clock Module

21


TangerineSDR Clock Module

Diagram by N8UR

22

Original Design



Diagram by N8UR

23

Final Design



24

uBLOX GPS Receiver 10MHz Performance


Hardware Features

Special thanks to John Ackermann, N8UR for taking

on the CKM design.


25


Proposed Modular Solution

DATA ENGINE

(DE)

RFM RFM

SBC

CKMTSDR

LEAF

GbE

GbE

USB

3.0

HI SPD

LO SPD

MEC

140MEC

140

RF

MEC

80

RPi HAT

Hardware Features

26


DE Communications

DATA ENGINE

(DE)

RFM RFM

SBC

CKMTSDR

LEAF

GbE

GbE

USB

3.0

HI SPD

LO SPD

MEC

140MEC

140

RF

MEC

80

RPi HAT

Hardware Features

27


Hardware Features

❑ 5Gbps USB 3.0 device interface (up to 500MB/s)

❑ High-speed PC interface

❑ 480Mbps USB 2.0 host interface (up to 50MB/s)

❑ for DVB dongle

❑ Dual GbE RJ45 ports (aggregate 100MB/s)

❑ One for SBC, one for external network

TangerineSDR DE Communications

28


DE I/O Expansion

DATA ENGINE

RFMRFM

(DE)SBC

CKMTSDR

LEAF

GbE

GbE

USB

3.0

HI SPDRF

MEC

140

MEC

140

LO SPD

MEC

80

RPi HAT

Hardware Features

29


Hardware Features

❑ GPIO for sensor and shield interfaces

❑ Dual connectors for both low/high speed expansion

❑ Standard Raspberry Pi Hat low-speed connector

❑ TangerineSDR LEAF high-speed connector

❑ Connectors for PTT, Keyer Paddle, PA Key

TangerineSDR DE I/O Expansion

30

40-pin RPi

LOW-SPEED

75-pin TSDR M.2

HIGH-SPEEDTSDR LEAF

RPi HAT


LEAF

Low-speed Expansion Adapter Fixture

31


Hardware Features

❑ RPi Hat - Low Speed (Direct Support)

❑ TangerineSDR LEAF - Low/High Speed

❑ Other Low Speed Using LEAF

❑ Arduino Shield

❑ Beagle Board Cape

❑ Click modules

❑ PMOD (I2C/SPI/UART)

❑ Ultra96 high-speed expansion port

❑ Others

Supported Expansion

32


Hardware Features

❑ Larger, faster FPGAs

❑ More DRAM storage

❑ More non-volatile (SATA, SSD, etc) storage

❑ Higher speed data ports (10GE, 40GE, USB 3.2, etc)

BUT…

The same RFM and CKM ports allow reuse of RF

and Clock boards

Future TangerineSDR DE Boards

33


LEAF/HAT

SBC

(Below DE)

CKM

Data Engine

RFM

Below

MAX10

RFM0

REV XA4

RPi Hat TangerineSDR LEAF

RFM1

US

B-u

B

USB-A

RJ45 x2

STACK

MEC140

M.2

MEC140

PM

OD

CKM

M.2

RPi Low Speed I/O

34


RFM

❑ Schematic/BOM complete

❑ PCB layout/design complete

❑ Awaiting DE layout to confirm integration

❑ Ready for prototype build

How Far Along Are We?

35


DE

❑ Schematic/BOM complete

❑ Currently in PCB layout/design


36


CKM

❑ Testing of P.O.C. using development boards complete

❑ Many revisions and simplifications made

❑ Schematic about 80% complete

❑ BOM complete


37


RFM❑ Prototypes by mid-May 2021

❑ Production by September 2021

DE❑ Prototypes by mid-May 2021


CKM❑ Prototypes by mid May 2021


When can I get one?

38


Our Web Page

TangerineSDR.com

39


E-mail ListservPost:

[email protected]

Subscribe:

lists.tapr.org/mailman/listinfo/

40

mailto:[email protected]



Weekly Zoom

https://scranton.zoom.us/j/91432247420#success

41


Thank you!

[email protected]

TangerineSDR.com

42


Date post:	30-May-2021
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