Custom RFID & NFC Engineering

Your antenna.
Your tag.
Your brand.

Tagnetix designs, prototypes, field-tests, manufactures, and manages supply chain for custom embedded RFID and NFC components — with full firmware and software integration, and the option to ship under your brand name. One partner. End to end.

Discuss your requirements → What's included
Custom RFID PCB assembly
Why go custom

Standard catalog parts don't always fit.

Every product has constraints that commodity RFID components were not designed around — form factor, substrate material, operating environment, protocol stack, or the need to carry your brand. Tagnetix was built to solve exactly this.

01
Form factor constraints

Non-standard antenna geometry, flex substrates, curved surfaces, or sub-25mm footprints that catalog parts cannot accommodate.

02
Environment requirements

High-temperature, high-humidity, IP-rated, or proximity-to-metal requirements that demand engineered substrate and geometry choices.

03
Protocol or integration fit

Custom firmware behavior, proprietary data formats, host MCU integration, or cloud connectivity requirements beyond the standard IC feature set.

04
Brand & commercial control

Your product carries your brand. Components that ship with your part numbers, your markings, and your supply chain — not a third-party catalog item.

Our process

From brief to production — one engagement.

Tagnetix manages every phase of custom RFID component development. You define the requirements. We do the rest.

01
Requirements & Architecture
Define what the RF system needs to do

We start with a structured requirements session — frequency band selection, read range targets, form factor constraints, substrate and environmental requirements, protocol stack, and integration points with your host system. The output is a written RF system specification that governs all subsequent design decisions.

Frequency selection Form factor definition Protocol specification Interface mapping Environmental requirements
02
Antenna Design & Simulation
Engineer the antenna geometry from first principles

Antenna coil geometry is designed using electromagnetic simulation — optimizing for read range, impedance match, Q-factor, and near-field uniformity within your form factor. We select substrate material, trace geometry, and matching network topology before a single prototype is built. S11 target and impedance match are defined at design stage.

EM simulation Coil geometry optimization Impedance matching Substrate selection Rigid or flex PCB
03
Prototype & Bench Characterization
Build, measure, iterate — until it performs

Initial prototypes are fabricated and characterized on the bench — S11 return loss, read range curves at rated reader output power, detuning behavior on target substrate materials, and thermal performance if required. We iterate on geometry until the antenna meets specification. All characterization data is documented and supplied to you.

S11 measurement Read range characterization Detuning analysis Thermal testing Full test report
04
Firmware & Software Integration
Make the RF system work inside your product

For reader modules, we develop embedded firmware for your host MCU — driver code, protocol handling, tag memory management, power management, and communication interfaces (UART, SPI, I2C). Where cloud or app connectivity is required, we build the full software stack: data pipeline, backend API, mobile or desktop application.

Host MCU firmware Reader IC driver Protocol stack Cloud connectivity iOS / Android app OTA update
05
Field Validation
Validate in your actual operating environment

Lab characterization is necessary but not sufficient. We validate the integrated RF system in the target application environment — accounting for metal proximity, EMI from nearby electronics, temperature variation, and mechanical installation tolerances. Field validation confirms real-world performance before production commitment.

In-situ testing EMI environment validation Mechanical fit check Reliability testing Acceptance criteria sign-off
06
Manufacturing & Supply Chain
From validated prototype to volume production

Once field validation is complete, we manage the transition to production — DFM review, supplier qualification, first article inspection, and quality-controlled production runs at the volumes your program requires. We manage the BOM, procurement, and logistics. You receive finished, tested, labeled components ready for assembly.

DFM review Supplier qualification First article inspection Production at 100–10,000+ units BOM management Logistics
Technical capability

What Tagnetix brings to a custom program.

ATRI Solutions — the parent company behind Tagnetix — is a full-stack product engineering company. Custom RFID programs have access to the full depth of that capability.

RF & Antenna Engineering

Hardware-level antenna design — coil geometry, substrate selection, impedance matching, radiation pattern optimization. HF, LF, and UHF. Rigid and flex PCB. Simulation-driven from day one.

Electronics & PCB Design

Full reader module electronics design in Altium — mixed-signal layout, EMC compliance, power management, multi-layer PCB. From schematic through production-ready Gerbers.

Embedded Firmware

MISRA-compliant firmware for FreeRTOS and bare-metal targets — reader IC drivers, protocol stacks, tag memory management, power modes, UART/SPI/I2C interfaces, and OTA update.

Cloud & Connectivity

IoT platform architecture, AWS IoT Core integration, MQTT/gRPC pipelines, real-time dashboards, and multi-region cloud deployments for products that connect RFID data to the cloud.

Mobile & Application Software

Native iOS and Android applications, NFC tap interfaces, BLE companion apps, and desktop software for products that interact with users through a smartphone or workstation.

Compliance & Certification

FCC Part 15, CE marking, and RF device regulatory compliance — managed through our qualified global lab network. Designed in from the first architecture decision.

Private labeling

Your brand on the component. Not ours.

Products built on Tagnetix custom components can ship with your company name, your part numbers, and your branding on the physical hardware. ATRI Solutions and Tagnetix do not appear anywhere on the finished component unless you choose otherwise.

This is not a label swap. We design and manufacture the component to your specification — it is yours from the first Gerber to the last production run.

Discuss private labeling →
Example — private label component
ACME Systems
HF-ANT-2525-R · Rev B
13.56 MHz · 25×25mm · uFL · 500mm
ISO 14443 · ISO 15693 · NFC
−20°C to +85°C · RoHS 3

Illustration only. Your company name, part number scheme, and specification language — on the physical component and in all documentation.

Your part numbers on the component marking and all documentation
Your brand name on the physical PCB silkscreen and packaging
Your datasheet template — we populate it, you publish it
No Tagnetix / ATRI attribution unless you choose to include it
IP stays with you — we retain no rights to custom designs
What's included

Full scope of a custom program.

Every item below is available as part of a custom Tagnetix engagement — taken as a complete end-to-end program or scoped to the phases you need.

Area What we deliver Output
RF System Requirements Frequency, range, form factor, environment, protocol, integration interface Written RF specification
Antenna Design Coil geometry, substrate, impedance matching — simulation-driven Design files + S11 targets
Prototype Fabrication Initial prototypes for bench characterization and iteration Physical prototypes
Bench Characterization S11, read range curves, detuning analysis, thermal Full test report with data
Firmware Development Host MCU driver, protocol stack, tag memory, interfaces, OTA Production firmware + source
Software Integration Cloud platform, mobile app, desktop software, API layer Deployed software stack
Field Validation In-application testing, EMI environment, acceptance sign-off Field validation report
Manufacturing DFM, supplier qualification, first article, volume production Finished, tested components
Supply Chain Management BOM management, procurement, logistics, lead time management Delivered to your dock
Private Labeling Your part numbers, brand name, silkscreen, packaging, datasheet Your brand on the hardware
Start a custom program

Tell us what you need to build.

Custom programs begin with a requirements conversation — no RFQ forms, no minimum volume commitments upfront. Tell us the application and we will tell you what is possible.

Start the conversation Browse standard portfolio