FCC, CE and Anatel Compliance for Radio Products
Getting a wireless product legally sold in the United States, Europe and Brazil, and designing it so it passes the first time.
Context
Every product with a radio in it needs regulatory approval before it can be sold, and the cost of finding that out late is brutal. A board that fails radiated emissions at a test lab comes back for a respin, and the schedule slips by the length of a PCB fabrication cycle plus another lab booking. The failures are rarely exotic. They are a clock harmonic landing in a restricted band, a switching regulator nobody filtered, a ground plane split under a fast trace, an antenna matched on the bench but not in the enclosure, or a label and user manual that do not carry the wording the regulator requires. None of that is visible in a schematic review, and all of it is cheaper to fix at layout than after a failed report. We are not a test laboratory and we do not issue certificates. We do the engineering that gets a product ready for one, sit on the pre-scan, and manage the paperwork through the bodies that do.
Scope
What this covers
- 01FCC certification and equipment authorization for the United States: Part 15 Subpart B for unintentional radiators and Subpart C for intentional radiators, the Supplier Declaration of Conformity route versus full Certification through a Telecommunication Certification Body, FCC ID assignment, and the labeling and user manual language the rules require.
- 02European CE marking under the Radio Equipment Directive 2014/53/EU, including the EMC and Low Voltage essential requirements, the applicable harmonized standards for 2.4 GHz and 5 GHz radios and their EMC counterparts, notified body involvement where a harmonized standard is not fully applied, RoHS and REACH, and the Declaration of Conformity and technical file that have to exist before the mark goes on.
- 03Anatel homologation for Brazil: the certification route through a designated certification body, testing at an accredited laboratory, the homologation number, and the seal and labeling rules for the local market.
- 04Design for compliance, done at schematic and layout rather than after a failure: clock and switching harmonic planning, filtering on every cable that leaves the enclosure, return path and ground plane discipline, shielding strategy, and antenna placement and matching validated in the actual enclosure rather than on an open bench.
- 05Pre-compliance measurement before a lab booking, so the expensive test is a confirmation rather than a discovery: conducted and radiated emissions sweeps, harmonic checks across the bands that matter, and antenna return loss and VSWR on a vector network analyzer.
- 06Diagnosing and fixing a failed test report, including reading the lab data to find which mechanism actually caused the exceedance rather than guessing at it.
- 07Module strategy: deciding honestly whether to use a pre-certified radio module and inherit its approval, or to integrate a bare chip and certify the whole product. The first is faster and cheaper and is usually right. The second is right when volume, cost or physical constraints justify the work, and we will say which case you are in.
- 08Test plans, technical construction files, and the documentation package a certification body actually asks for.
Record
Work behind this
Delivered work, stated as facts rather than claims. Programs and employers are named where naming them is what makes the record checkable. Clients are not.
Questions
Questions technical buyers ask
Do you issue the certificate?
No, and be careful with anyone who says they do. Certificates come from accredited test laboratories and certification bodies. What we do is the engineering that makes a product pass: designing for compliance before layout is frozen, running pre-compliance so the first lab visit is a confirmation, preparing the technical file, and managing the process with the lab and the certification body.
Should we use a pre-certified module or certify our own design?
For most products, a pre-certified module. You inherit most of the radio approval, the schedule risk drops sharply, and the extra unit cost is usually less than the certification you avoid. Certifying your own radio design makes sense at volume, where the module cost compounds, or where size, power or antenna constraints rule the module out. It is worth answering this before the schematic, not after.
We already failed a test. Can that be salvaged without a respin?
Sometimes. Filtering, shielding, firmware changes to spread or shift a clock, and enclosure or antenna changes fix a lot of marginal failures without touching the board. Some failures are structural and the board does have to change. The first job is reading the lab report properly to work out which one you have, because guessing is what turns one respin into two.
Start a technical conversation
Describe the system, the constraint and the deadline. An engineer answers.
Tools and platforms we work with: FCC Part 15 Subpart B and C, SDoC and TCB certification routes. EU Radio Equipment Directive 2014/53/EU with EN 300 328, EN 301 893 and EN 301 489. Anatel Resolution 242 and 680 homologation. Pre-compliance with spectrum analyzers, near field probes and a vector network analyzer.