4 layers140 × 116 mm
2 layers125.5 × 90 mm
Frontend
olddudealex/funradRadar for fun
- Size
- 125.5 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 528
- Pads
- 675
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Feb 2026
- Updated
- 4 Nov 2026
Overview
Frontend is an open-source printed circuit board by olddudealex, from the olddudealex/funrad repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 125.5 × 90 mm with 33 parts on 528 nets.
It is built around the QPL9504TR7, AD8318ACPZ-R2 and GALI-84+, with the PE43711B-Z, QPA9127TR7 and ADS9234RIRHB among its other parts. Its parts include 23 ICs, 6 connectors and 1 crystal.
Main components
8
QPL9504TR7
DFN-8-EP(2x2)-40℃~+105℃ 0.76dB 18.7dBm 18dB 21.6dB 3.3V~5.5V 34dBm 55mA 600MHz~6GHz 9.3dB Input matching integration、Output matching integration、Fast enable control DFN-8-EP(2x2) Low Noise Amplifiers (LNA) - RF ROHSQorvoLow Noise Amplifiers (LNA) - RFAD8318ACPZ-R2
LFCSP-16_4X4Logarithmic detection、Temperature compensation LFCSP-16_4X4 RF Detectors ROHSAnalog DevicesRF Detectors
GALI-84+
SOT-89-45℃~+85℃ 0Hz~6GHz 100mA 11.8dB 16.3dB 21.9dBm 25.8dB 38dBm 5.3dB 5.4V~6.2V Electrostatic protection SOT-89 RF Amplifiers ROHSMini-CircuitsRF Amplifiers
PE43711B-Z
QFN-24-EP(4x4)-40℃~+105℃ 0.25dB、0.5dB、1dB 0dB~31.75dB 1.5dB、1.85dB、2.4dB、2.8dB 50Ω 9kHz~6GHz Electrostatic protection、Digitally programmable attenuation、Multi-step attenuation、Digital control interface、Parallel control interface QFN-24-EP(4x4) RF Attenuators ROHSpSemiRF Attenuators
QPA9127TR7
DFN-8-EP(2x2)-40℃~+105℃ 0.7dB 16.5dB 19.1dB 1GHz~6GHz 21.11dBm 22.9dB 3.3V~5V 36.83dBm 70mA Low-power mode、Linearization design、Bias control circuit DFN-8-EP(2x2) RF Amplifiers ROHSQorvoRF Amplifiers
ADS9234RIRHB
VQFN-32-EP(5x5)-40℃~+125℃ 0.15LSB 14 1LSB 2 3.5MHz 4.5V~5.5V 85.6dB Built-in Not supported SAR SPI、Parallel port Synchronous triggering、Simultaneous sampling Yes VQFN-32-EP(5x5) Analog to Digital Converters (ADC) ROHSTexas InstrumentsAnalog To Digital Converters (ADCs)ADL5380ACPZ
UncategorisedADERM8-050-09.0-L-DV-K-TR
SMD,P=0.8mm0.8mm 100P 2 Gold Surface Mount,Vertical SMD,P=0.8mm Board-to-Board and Backplane Connector ROHSSamtecBoard-To-Board And Backplane Connector
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | Amphenol 132289 | Frontend:SMA_Amphenol_132289_EdgeMount | J2, J3, J4, J5, J6 |
| 4 | ADL5380ACPZ | Frontend:LFCSP-24-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U9, U13, U17, U21 |
| 4 | ADS9234RIRHB | Frontend:VQFN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm | U11, U15, U19, U23 |
| 4 | QPL9504 | Frontend:DFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.6mm | U8, U12, U16, U20 |
| 4 | THS4551xRGT | Package_DFN_QFN:WQFN-16-1EP_3x3mm_P0.5mm_EP1.68x1.68mm | U10, U14, U18, U22 |
| 2 | AD8318ACPZ | Package_CSP:Analog_LFCSP-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U5, U6 |
| 1 | AX3DAF-100.0000T | Frontend:Oscillator_SMD_6_2.5x3.2mm_P1.2mm | Y1 |
| 1 | Dir Coupler (C=15dB) | Frontend:FunRad_Coupler_5GHz8_Symmetric_15dB | PD2 |
| 1 | ERM8-050-09.0-L-DV-K-TR | Frontend:SAMTEC_ERM8-050-09.0-L-DV | J1 |
| 1 | GALI-84+ | Package_TO_SOT_SMD:SOT-89-3 | U7 |
| 1 | HMC431 | Frontend:WQFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U2 |
| 1 | LMX2491RTWR | Frontend:WQFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U1 |
| 1 | PE43711B-Z | Frontend:QFN-24-1EP_4x4mm_P0.5mm_EP2.75x2.75mm | U3 |
| 1 | QPA9127 | Frontend:DFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.6mm | U4 |
| 1 | Wilkinson | Frontend:Wilkinson1_2 | PD1 |
| 1 | Wilkinson | Frontend:Wilkinson1_4 | PD3 |
Questions
How big is the Frontend PCB?
It measures 125.5 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Frontend use?
33 parts, built around the QPL9504TR7, AD8318ACPZ-R2, GALI-84+ and PE43711B-Z. 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 Frontend KiCad files?
From the olddudealex/funrad repository on GitHub, at the commit this page was made from: the board is Frontend/kicad/Frontend/Frontend.kicad_pcb and its schematic Antenna/kicad/line_array/line_array.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Frontend design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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