2 layers
6 layers200 × 200 mm
VNA Project
fdreshaj/VNA_DesignDesign of a VNA
- Size
- 200 × 200 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 234
- Nets
- 207
- Pads
- 797
- Tracks, vias
- 2,367, 394
- Pours
- 18
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Aug 2025
- Updated
- 1 Dec 2025
Overview
VNA Project is an open-source printed circuit board by fdreshaj, from the fdreshaj/VNA_Design repository on GitHub. It is a 6-layer board of 200 × 200 mm with 234 parts on 207 nets, routed with 2,367 tracks and 394 vias.
It is built around the LAN8742A-CZ, TMP75AID and AD8138ARZ, with the AD9238BSTZ-20, AP63203WU and AP63205WU among its other parts. Its parts include 89 capacitors, 70 resistors, 17 diodes, 16 ICs and 8 connectors. It belongs with the STM32 boards of this library.
Main components
10
LAN8742A-CZ
QFN-24-EP(4x4)0℃~+70℃ 1.8V~3.3V 10BASE-T、100BASE-TX 10Mbit/s、100Mbit/s Ethernet Transceiver RMII QFN-24-EP(4x4) Ethernet Transceivers ROHSMicrochip TechnologyEthernet Transceivers
TMP75AID
SOIC-8-40℃~+125℃ 1.4V~5.5V 100nA 12bit 220ms I2C ±0.5℃ SOIC-8 Temperature Sensors ROHSTexas InstrumentsTemperature SensorsAD8138ARZ
SOIC-8-40℃~+85℃ -5.5V~-1.4V、1.4V~5.5V 1 1150V/us 11V 16ns 1mV 2.7V~11V 20mA 320MHz 4uA 4uV/℃ 5nV/√Hz@100kHz 70dB 90dB 95mA Differential Single-ended to differential conversion、Integrated ADC driver、Adjustable output common-mode voltage SOIC-8 Differential Amplifiers ROHSAnalog DevicesDifferential Amplifiers
AD9238BSTZ-20
LQFP-64(7x7)-40℃~+85℃ 0.35LSB 12 2 2.7V~3.6V 20MHz LQFP-64(7x7) Analog to Digital Converters (ADC) ROHSAnalog DevicesAnalog To Digital Converters (ADC)
AP63203WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.3V 3.8V~32V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC ConvertersAP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
HT7533-1
SOT-23-5-40℃~+85℃@(Ta) 1 100mA 2.5uA 25mV@(1mA) 3.3V 30V Fixed Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHOLTEKVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsMIC5501-3.0YM5-TR
SOT-23-5-40℃~+125℃@(Tj) 1 175uVrms 300mA 380mV@(300mA) 3V 5.5V 55uA 60dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSMicrochip TechnologyVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSTDCZS1-25M
-- Lack of specifications ROHSNDKUncategorisedCLMVC-FKA-CL1D1L71BB7C3C3
SMD-4P-40℃~+100℃ 1.9V、2.9V、3V 460nm~475nm、520nm~535nm、619nm~624nm 49mW、49mW、60mW 5mA 71mcd、112mcd、355mcd Common Anode Red, Green, Blue Water Clear SMD-4P LED Indication - Discrete ROHSCree LEDLED Indication - Discrete
README
README.mdVNA_Design
Work in Progress Design of a VNA
The Subsystems and Simulations folder contains all files related to the research and pre fabrication testing/simulations of subsystems
VNA_Project folder contains all KiCad files of the board itself. Specifically open VNA_Project.kicad_pro to check out the design. KiCad files do not have RF subsystem layout as that will be done in ADS during testing.
Motherboard Layout
Stackup:
3D+Layer View:
Parts
234| Qty | Value | Footprint | References |
|---|---|---|---|
| 24 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C305, C306, C307, C308, C309, C310, C311, C312, C313, C315, C316, C317, C403, C404, C408, C409 +8 |
| 11 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C402, C405, C406, C407, C414, C415, C418, C420, C421, C422, C424 |
| 9 | 1.5K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R301, R303, R304, R310, R311, R312, R314, R315, R316 |
| 8 | 1000 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R317, R318, R320, R322, R323, R324, R325, R326 |
| 8 | 499 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R410, R411, R412, R413, R414, R415, R416, R417 |
| 7 | 10u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C401, C419, C423, C425, C426, C427, C508 |
| 7 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R203, R206, R207, R208, R209, R215, R319 |
| 6 | 100p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C412, C413, C416, C417, C428, C429 |
| 6 | 1u | Capacitor_SMD:C_0805_2012Metric | C205, C208, C211, C217, C223, C227 |
| 6 | Green | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D201, D202, D203, D204, D205, D206 |
| 6 | SW_SPDT | Button_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW201, SW202, SW301, SW401, SW402, SW403 |
| 6 | TestPoint | TestPoint:TestPoint_Pad_D4.0mm | TP201, TP202, TP203, TP204, TP205, TP206 |
| 5 | 49.9 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R212, R506, R507, R508, R509 |
| 5 | ESD131-B1-W0201 | Diode_SMD:Nexperia_DSN0603-2_0.6x0.3mm_P0.4mm | D301, D302, D303, D304, D305 |
| 5 | RED | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D306, D307, D308, D309, D310 |
| 4 | 10p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C301, C304, C501, C502 |
| 4 | 22u | Capacitor_SMD:C_0805_2012Metric | C210, C212, C214, C215 |
| 4 | 49R9 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R306, R307, R308, R309 |
| 4 | FerriteBead | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | FB301, FB401, FB402, FB501 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H301, H302, H303, H304 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R214, R302, R504 |
| 3 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C302, C314, C504 |
| 3 | 47u | Capacitor_SMD:C_0805_2012Metric | C228, C229, C230 |
| 3 | 50 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R401, R402, R409 |
| 3 | 68u | Capacitor_SMD:C_0805_2012Metric | C216, C218, C219 |
| 3 | Conn_Coaxial | Connector_Coaxial:SMA_Amphenol_901-144_Vertical | J401, J402, J403 |
| 3 | TMP75AID | NonKiCad_footprints:TMP75AID | U301, U302, U304 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C221, C222 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric | C203, C204 |
| 2 | 10u | Inductor_SMD:L_APV_ANR6020 | L201, L204 |
| 2 | 12p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C410, C411 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R407, R408 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C209, C213 |
| 2 | 270 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R510, R511 |
| 2 | 300 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R403, R404 |
| 2 | 33 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R502, R503 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R201, R202 |
| 2 | 910 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R405, R406 |
| 2 | AD8138ARZ | NonKiCad_footprints:R_8_ADI | U404, U405 |
| 2 | LT1813CS8-TRPBF | NonKiCad_footprints:SO-8_S_LIT-L | U401, U402 |
| 2 | STDCZS1-25M | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y301, Y501 |
| 1 | 0 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R501 |
| 1 | 0.01u | Capacitor_SMD:C_0805_2012Metric | C225 |
| 1 | 0.22u | Capacitor_SMD:C_0805_2012Metric | C224 |
| 1 | 1.54k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R211 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C207 |
| 1 | 100p | Capacitor_SMD:C_0805_2012Metric | C206 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R512 |
| 1 | 10n | Inductor_SMD:L_APV_ANR6020 | L202 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C201 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C202 |
| 1 | 12.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R505 |
| 1 | 158k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R204 |
| 1 | 15u | Capacitor_SMD:C_0805_2012Metric | C220 |
| 1 | 162k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R210 |
| 1 | 2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R321 |
| 1 | 2x5 1.27mm | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J301 |
| 1 | 3.9uH | Inductor_SMD:L_APV_ANR6020 | L203 |
| 1 | 30.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R205 |
| 1 | 4.7u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C303 |
| 1 | 47 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R313 |
| 1 | 470p | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C505 |
| 1 | 52.3k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R213 |
| 1 | AD9238BSTZ-20 | NonKiCad_footprints:ST_64_1_ADI | U403 |
| 1 | AP63203WU | Package_TO_SOT_SMD:TSOT-23-6_HandSoldering | U202 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6_HandSoldering | U201 |
| 1 | CLMVC-FKA-CL1D1L71BB7C3C3 | NonKiCad_footprints:CLMVC-FKA-CL1D1L71BB7C3C3_CRE | LED301 |
| 1 | DNF | Capacitor_SMD:C_0805_2012Metric | C226 |
| 1 | DNF | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R305 |
| 1 | HT7533-1 | Package_TO_SOT_SMD:SOT-89-3_Handsoldering | U204 |
| 1 | Jack-DC | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J202 |
| 1 | LAN8742A | Package_DFN_QFN:VQFN-24-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U501 |
| 1 | MCP1804x-A002xOT | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U207 |
| 1 | MIC5501-3.0YM5 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | U205 |
| 1 | RJ45_Amphenol_RJMG1BD3B8K1ANR | Connector_RJ:RJ45_Amphenol_RJMG1BD3B8K1ANR | J501 |
| 1 | STM32H730VBTx | Package_QFP:LQFP-100_14x14mm_P0.5mm | U303 |
| 1 | Screw_Terminal_01x01 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J203 |
| 1 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J302 |
| 1 | TL972IPWR | NonKiCad_footprints:TL972IPWR | U305 |
The 230 most common of 234 parts.
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Questions
How big is the VNA Project PCB?
It measures 200 × 200 mm and has 6 copper layers, 1.6 mm thick.
What parts does the VNA Project use?
234 parts, built around the LAN8742A-CZ, TMP75AID, AD8138ARZ and AD9238BSTZ-20. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the VNA Project KiCad files?
From the fdreshaj/VNA_Design repository on GitHub, at the commit this page was made from: the board is VNA_Project/VNA_Project.kicad_pcb and its schematic VNA_Project/ADC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the VNA Project design in my own project?
Its repository states no licence, so its author keeps all rights: ask fdreshaj before reusing the design.