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We are seeking an experienced Electronics Engineer with strong expertise in PCB antenna design to develop a modular interactive hardware system for a public exhibition environment. The system includes: A Teensy 4.1–based Master Hub 50+ circular Slave Nodes (120mm) featuring high-density LEDs and RFID/NFC sensing This is a specialist-level project, ideal for engineers with 4–5+ years of proven experience in antenna PCB design, RF systems, and power electronics. Core Technical Requirements -Antenna / RF Design -PCB antenna design & tuning for ST25R3911B -7cm reliable read range through 3mm resin -ISO 15693 compatibility RF simulation & validation required -Power & Thermal Design -24V / 10A daisy-chained power bus -Circular PCB, 2oz copper, thermal via stitching -100% LED duty cycle (worst-case) -Limited airflow environment Manufacturing Constraints (Mandatory) -Design optimized for JLCPCB / LCSC SMT -All parts must be in stock -Final files in Native EasyEDA (.json) -Expected 4-layer, 1.6mm PCB (open to recommendation) Safety & Reliability Hot-plug capable power/data connection Strong ESD protection Operating temperature must remain below 45°C Deliverables -Schematics, BOM, RF report -PCB layout, thermal analysis, 3D STEP -Final EasyEDA files + DFM package Required Experience -4–5+ years in electronics & PCB design -Strong antenna PCB & RF experience (mandatory) -High-current and thermal design experience -EasyEDA + JLCPCB workflow knowledge -Have to provide related sample work to get started Start your proposal with "January" so that we know you read this Jobpost
Projektin tunnus (ID): 40182331
12 ehdotukset
Etäprojekti
Aktiivinen 10 päivää sitten
Aseta budjettisi ja aikataulu
Saa maksu työstäsi
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Rekisteröinti ja töihin tarjoaminen on ilmaista
12 freelancerit tarjoavat keskimäärin $412 USD tätä projektia

January — I am an experienced Electronics Engineer with strong expertise in PCB antenna and RF design, offering a robust and manufacturable solution for your modular interactive exhibition system. I will design and tune a PCB antenna for the ST25R3911B to achieve a reliable 7 cm ISO 15693 read range through 3 mm resin, supported by RF simulation and validation. The design will address high-current 24 V / 10 A power distribution, thermal management for continuous LED operation, and reliability requirements including hot-plug capability and ESD protection, while keeping operating temperatures below 45 °C. All schematics, PCB layout, RF and thermal analysis, BOM, and final deliverables will be provided in native EasyEDA format, fully optimized for JLCPCB/LCSC assembly, with all components verified in stock. I have 4–5+ years of proven experience in antenna PCB design, RF systems, and high-power electronics, and can share relevant sample projects upon request.
$180 USD 7 päivässä
6,2
6,2

January Hello, I’m very interested in your modular interactive hardware project and confident I can deliver the high-performance PCB antenna and power electronics design you require. I have over 5 years of experience in electronics engineering with a focus on PCB antenna design, RF systems, and high-current/thermal power electronics. I can design and tune the ST25R3911B PCB antenna for reliable ISO 15693 reads through 3 mm resin, including RF simulation and validation, while optimizing the circular 120 mm Slave Node PCBs for 24 V/10 A daisy-chained power, 2 oz copper, thermal via stitching, and worst-case 100% LED duty cycle operation in limited airflow environments. I’m experienced with EasyEDA/JLCPCB workflows, can provide fully manufacturable 4-layer layouts, and ensure all components are in-stock, ESD-protected, hot-plug capable, and meet <45 °C operating temperatures. Deliverables will include schematics, BOM, RF report, PCB layout with thermal analysis, 3D STEP models, and a complete DFM package ready for production. Relevant examples of prior RF and high-current PCB projects are available for review.
$140 USD 7 päivässä
3,9
3,9

Hi, . I specialize in RF layout and high current PCB design using EasyEDA and can deliver your interactive hardware system. I have experience tuning the ST25R3911B for ISO 15693 to ensure a reliable 7cm read range through resin. My design will utilize 2oz copper and thermal stitching to manage the 10A load within the 45 degree limit. I will ensure all components are LCSC stock compliant and provide full manufacturing files. Best Regards
$110 USD 6 päivässä
1,9
1,9

January ✅✅✅RF & Antenna PCB Design Engineer✅✅✅ Hi there, I’m an electronics engineer with 5+ years of hands-on experience in PCB antenna design, RF systems, and high-current electronics for production hardware. I’ve designed and tuned PCB antennas for NFC/RFID systems, delivered ISO 15693–compliant solutions, and supported projects through RF validation and manufacturing at JLCPCB. My approach is to simulate and tune the ST25R3911B antenna for your resin constraints, then co-design power, thermal, and RF domains on a 4-layer circular PCB. I work natively in EasyEDA, optimize for LCSC availability, and deliver DFM-clean, exhibition-ready designs. Do you have resin dielectric properties? Is the 7 cm read range required across the full PCB area? Will the master hub share the same RF stack? I am ready to start immediately. Best regards
$50 USD 3 päivässä
2,0
2,0

January We are a multidisciplinary electronics engineering team with over 5+ years of professional experience in RF systems, PCB antenna design, high-current power electronics, and production-ready hardware for public installations. We have delivered multiple circular and non-rectangular PCBs incorporating HF/NFC loop antennas, dense LED arrays, and constrained thermal environments. For this project, we will design and tune a PCB antenna for the ST25R3911B with ISO 15693 compliance, targeting a reliable 7 cm read range through 3 mm resin. Our workflow includes RF simulation, impedance matching, and validation to ensure stable performance in real-world exhibition conditions. We are comfortable working with 4-layer, 1.6 mm boards using 2 oz copper and understand the constraints of circular layouts and antenna isolation. On the power side, we will engineer a 24 V / 10 A daisy-chained system with hot-plug capability, strong ESD protection, and thermal-aware routing and via stitching to support 100% LED duty cycle while keeping operating temperatures below 45 °C in limited airflow environments. All designs will be fully optimized for JLCPCB/LCSC availability and delivered as native EasyEDA (.json) files, including schematics, BOM, PCB layout, thermal analysis, RF report, 3D STEP model, and complete DFM package. We can provide relevant antenna and high-current PCB sample work to support qualification and are ready to begin immediately.
$400 USD 18 päivässä
0,0
0,0

Hello, This is exactly the type of project I work on. My focus is interactive modular hardware systems combining custom PCB antennas, RFID/NFC, high-density LEDs, and high-current power distribution for demanding public and exhibition environments. Before diving into details, I recommend you review my portfolio first — it includes projects very close to this scope, such as circular PCBs, RFID/NFC antenna design, LED-heavy nodes, and thermally constrained systems. Your requirements align strongly with that work. All deliverables are manufacturing-ready: schematics, BOM, PCB layout, RF notes, STEP files, and final native EasyEDA files with full DFM. Looking forward to your message. Best regards, Ahmed
$135 USD 7 päivässä
0,0
0,0

January, Hi, I am a senior space graded transceiver engineer, antenna and pcb designs. One of the systems incldue a vhf/uhf and sband transceiver with 7 years flight time on cubesats. Sorry I have to increas the bid for realistic values, as this will take some time for finetuning testing and maybe test boards. Work prefered done in Altium Designer, FR4 material 1.6mm should be no problem. and be considered in the simulation for the NFC antenna (I did some dsigns on NFC also but they are NDA restricted. Attached my designs for cubesat which is open documentes (LRT TUM project) greetings rolf-dieter k.
$2 800 USD 7 päivässä
0,0
0,0

Hello, I have read your job post carefully and understand all technical requirements. I have strong experience in PCB antenna & RF design, including NFC/RFID antenna tuning for ST25R3911B and ISO 15693 compliance. I have worked on circular PCBs, 4-layer boards, high-current 24V power distribution, and thermal-critical LED designs with limited airflow. I am comfortable with RF simulation, antenna tuning, thermal via stitching, and EasyEDA + JLCPCB/LCSC SMT workflow. I can complete this project with proper RF validation, thermal analysis, and manufacturable PCB design within 7 days. Sample work can be shared. Looking forward to working with you. Best regards, Harsh Sahu
$140 USD 7 päivässä
0,0
0,0

"January, I'm Jawad - an Electronics Engineer with over 4 years of industry experience. In line with your project's core requirements, I bring a strong background in Antenna PCB Design - specifically PCB antenna design & tuning for ST25R3911B and RF systems. My familiarity with RF simulation & validation will ensure a reliable 7cm read range through 3mm resin, ISO 15693 compatibility and the high-density LEDs and RFID/NFC sensing specified for your project." "I am competent in Power & Thermal Design as well, having worked with projects requiring a similar level of complexity. My experience includes creating circuits with daisy-chained power buses, thermal via stitching, and tackling limited airflow environments. I understand the manufacturing constraints put forth by this project and I always design keeping industry-standard parameters in mind" "But that's not where my skills end. I've had hands-on experience with EasyEDA + JLCPCB workflow- that's the native-file format you seek at! Over my career, I have gained expertise in DFM (Design for Manufacturing) which - along with ensuring everything is in stock - will make manufacturing your product a smooth process.
$150 USD 73 päivässä
0,0
0,0

I am an experienced Electronics Engineer specializing in PCB antenna and RF design, high-current power systems, and LED-intensive hardware. I can design and tune the ST25R3911B antenna for 7 cm ISO 15693 read range through 3 mm resin, optimize thermal and power performance for 24 V / 10 A LED nodes, ensure hot-plug reliability and ESD protection, and deliver fully manufacturable EasyEDA files with BOM, RF report, 4-layer PCB layout, thermal analysis, 3D STEP, and DFM package within 7 days.
$140 USD 7 päivässä
0,0
0,0

January What antenna topology and matching network approach do you expect for the ST25R3911B to reliably achieve a 7 cm ISO 15693 read range through 3 mm of resin? Do you have any existing RF simulation data or enclosure material properties available to validate antenna tuning before final PCB fabrication? How is the 24 V 10 A daisy-chained power bus segmented or protected at each slave node to manage inrush current and hot-plug conditions? Are there preferred thermal mitigation strategies for the circular 120 mm PCB given the 100 percent LED duty cycle and limited airflow environment?
$140 USD 7 päivässä
0,0
0,0

Karachi, Pakistan
Maksutapa vahvistettu
Liittynyt marrask. 23, 2023
$30-250 USD
$30-250 USD
$30-250 USD
$30-250 USD
$30-250 USD
₹1500-12500 INR
$30-250 USD
₹75000-150000 INR
$250-750 USD
₹1500-12500 INR
$250-750 CAD
£20-250 GBP
$10-30 USD
₹1500-12500 INR
$250-750 CAD
$10-30 USD
$30-250 CAD
₹600-1500 INR
$750-1500 USD
$30-250 USD
$20-30 SGD/ tunnissa
₹37500-75000 INR
$15-25 USD/ tunnissa
$2-8 USD/ tunnissa
$30-250 USD