Radar RF
About the Radar RF PCB
Radar RF is an open source PCB design by TonyStark2007, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 42.9 × 24.5 mm, with 138 components from 55 distinct parts.
Other key parts include the LT6232, ADF4158, SG-210STF, MITERED_BEND and 5400BL15B050E. By type, the board carries 64 capacitors, 42 resistors, 23 ICs, 5 inductors and 1 connector.
From the project
This is an attempt to develop a ground penetrating FMCW radar. The operating range is 100MHz to 1000MHz, central frequency 435MHz. This is work in progress and not yet concrete.
This is an attempt to make a subGHz radar.
STM32F4 has triangular waveform generation option with its DAC and also ADF4158 is used for PLL topology. Either option can be used for waveform generation. Check schematic to populate necessary resistor values to use either mode. ADF4158 can generate pulses with some gap between each sweep. In this way N number of samples are packed and buffered over USB during this gap. Main loop runs with a FSM to check conditions of sweep. ADF4158 Muxout is generating pulse according to the sweep condition. External interrupt tracks this pulse to move between…
Main components on the Radar RF
Radar RF bill of materials (BOM)
138 components, 55 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT6232 | SSOP16_3.9x4.9mm_P0.635mm | U1 |
| 1 | ADF4158 | LFCSP24_4x4mm_P0.5mm_1EXP_2.5x2.5mm | U2 |
| 1 | SG-210STF | Crystal_2.5x2mm | U3 |
| 3 | MITERED_BEND | Mitered_Bend_0.34mm_90 | U4, U9, U23 |
| 1 | MITERED_BEND | Mitered_Bend_0.34mm_45 | U5 |
| 2 | 5400BL15B050E | Balun_5400BL15B050E | U6, U13 |
| 1 | TLV172 | SC70_5 | U7 |
| 1 | MITERED_BEND | Mitered_Bend_0.34mm_45_Mirrored | U8 |
| 1 | ADL5801 | LFCSP24_4x4mm_P0.5mm_1EXP_2.5x2.5mm | U10 |
| 1 | HMC431LP4 | QFN24_4x4mm_P0.5mm_1EXP_2.7x2.7mm | U11 |
| 1 | LDS3985 | SOT23_5 | U12 |
| 2 | PAT1220-C-6DB | PAT1220_6dB | U14, U19 |
| 1 | TRF37A73 | WSON8_2x2mm_P0.5mm_1EXP_0.9x1.6mm | U15 |
| 1 | TQP5523 | QFN20_4x4mm_P0.5mm_1EXP_2.5x2.5mm | U16 |
| 1 | MCP1700 | SOT23_3 | U17 |
| 1 | SKY65404 | SKY65404_31 | U18 |
| 1 | Directional_Coupler | Directional_Coupler_15dB | U20 |
| 2 | SMA_Connector | SMA_Connector | U21, U22 |
| 1 | Connector_02x15 | PinHeader_2x15_DF12B(5.0)-30DP-0.5V(86) | J1 |
| 3 | Led_Diode | Diode_0603 | 3V0, 3V3, 5V |
Show 35 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 2.2uH | SMD_0603 | L1, L2 |
| 1 | BLM18PG181SN1D | SMD_0603 | L3 |
| 1 | LQW15AN9N9J80D | SMD_0402 | L4 |
| 1 | 0.6nH | SMD_0402 | L5 |
| 23 | 100nF | SMD_0402 | C12, C13, C14, C21, C22, C28, C37, C38 +15 |
| 5 | 18pF | SMD_0402 | C15, C16, C18, C59, C68 |
| 1 | 2.2nF | SMD_0402 | C17 |
| 3 | 330nF | SMD_0402 | C19, C20, C26 |
| 5 | 100pF | SMD_0402 | C23, C41, C42, C47, C65 |
| 7 | 10pF | SMD_0402 | C24, C25, C35, C36, C54, C55, C62 |
| 1 | 2pF | SMD_0402 | C27 |
| 6 | 470pF | SMD_0402 | C29, C31, C32, C33, C34, C44 |
| 3 | 10nF | SMD_0402 | C30, C56, C61 |
| 4 | 2.2uF | SMD_0402 | C49, C57, C63, C71 |
| 2 | DNP | SMD_0402 | C58, C66 |
| 2 | 1000pF | SMD_0402 | C60, C72 |
| 1 | 10uF | SMD_0603 | C70 |
| 1 | 0.5pF | SMD_0402 | C73 |
| 7 | 1K | SMD_0402 | R1, R16, R19, R29, R39, R40, R42 |
| 4 | DNP | SMD_0402 | R2, R3, R15, R30 |
| 5 | 0 | SMD_0402 | R4, R12, R22, R35, R43 |
| 2 | 549 | SMD_0402 | R5, R6 |
| 1 | 5.49K | SMD_0402 | R7 |
| 1 | 69.8 | SMD_0402 | R8 |
| 3 | 10K | SMD_0402 | R9, R10, R34 |
| 1 | 240 | SMD_0402 | R11 |
| 2 | 910 | SMD_0402 | R13, R14 |
| 2 | 130 | SMD_0402 | R17, R18 |
| 2 | 4.99K | SMD_0402 | R20, R21 |
| 3 | 4.7K | SMD_0402 | R23, R24, R26 |
| 3 | 50 | SMD_0402 | R25, R28, R41 |
| 3 | 18 | SMD_0402 | R31, R32, R33 |
| 1 | 0 to 27 | SMD_0402 | R36 |
| 1 | 30K | SMD_0402 | R37 |
| 1 | 100 | SMD_0402 | R38 |
Radar RF design files
The KiCad project lives in the TonyStark2007/GPR_FMCW_SubGHz repository on GitHub; these links point at the commit this page was built from.
Radar RF: common questions
How big is the Radar RF PCB?
The Radar RF measures 42.9 × 24.5 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Radar RF?
138 components, from 55 distinct parts. The full bill of materials is listed on this page.
Where can I download the Radar RF design files?
From the TonyStark2007/GPR_FMCW_SubGHz repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Radar RF design in my own project?
Yes, under the terms of its GPL-3.0 license, which TonyStark2007 chose for the repository.
