ANSI C63.5-2017 PDF

Full title and description

IEEE/ANSI C63.5-2017 — American National Standard for Electromagnetic Compatibility — Radiated Emission Measurements in Electromagnetic Interference (EMI) Control — Calibration and Qualification of Antennas (9 kHz to 40 GHz). This standard provides the methods and procedures for determining antenna factors and associated calibration parameters for linearly polarized antennas used in radiated‑emission EMC/EMI measurements.

Abstract

Provides standardized procedures for antenna calibration across 9 kHz to 40 GHz, covering antenna types (loops, monopoles/rods, tuned dipoles, biconical dipoles, log‑periodic dipole arrays, hybrid arrays, broadband horns, etc.) and calibration methods (standard site method, reference antenna method, equivalent capacitance substitution, standard transmit loop, standard antenna, and standard field methods). The document also includes informative annexes with worksheets, uncertainty procedures, reference antenna descriptions and construction details.

General information

• Status: Current (active); corrigendum published (Corr.1-2019).
• Publication date: 8 May 2017 (C63.5-2017).
• Publisher: Institute of Electrical and Electronics Engineers (published as an American National Standard in cooperation with ANSI).
• ICS / categories: Electromagnetic compatibility (EMC) — Emission / Antenna calibration (ICS 33.100, emission subcategory).
• Edition / version: 2017 edition (IEEE/ANSI C63.5-2017). Corrigendum 1 (2019) amends the 2017 edition.
• Number of pages: Typical published PDF/page listings show approximately 114 pages (varies by format; redline/annotated files may be longer).

Scope

Specifies methods for determining antenna factors (AF) and related parameters for antennas used in radiated‑emission measurements for EMI control over the frequency range 9 kHz to 40 GHz. The scope covers linear‑polarization antenna types commonly used in compliance testing and details the accepted calibration procedures (standard site method/three‑antenna method, reference antenna method, equivalent capacitance substitution method, standard transmit loop method, standard antenna method and standard field method), plus guidance on measurement uncertainty and qualification of calibration sites. The standard is intended to support measurements made under ASC C63 emission measurement standards (for example ANSI C63.4 and ANSI C63.10).

Key topics and requirements

• Frequency coverage: 9 kHz to 40 GHz (primary calibration range for radiated emission antennas).
• Calibration methods: Standard site method (SSM / three‑antenna), reference antenna method (RAM), equivalent capacitance substitution method (ECSM), standard transmit loop method (STLM), standard antenna method (SAM), and standard field method (SFM).
• Antennas included: loops, rods/monopoles, tuned dipoles, biconical dipoles, log‑periodic dipole arrays, hybrid dipole/log‑periodic arrays, broadband horns, and other linearly polarized antennas used in ANSI C63 series testing.
• Site and geometry requirements: procedures and limits for standard site calibrations (site criteria and three‑antenna arrangements), and geometry corrections for specific antenna types and frequency ranges (e.g., 30 MHz–1 GHz considerations).
• Measurement uncertainty: annexes and procedures for estimating and reporting measurement uncertainty associated with antenna factor determinations.
• Documentation and worksheets: example worksheets and annex material to standardize record keeping for discrete‑frequency and swept calibrations.
• Conformity and accreditation: used as the reference for accredited antenna calibration laboratories and for supporting EMC compliance measurements performed to ANSI C63.4/C63.10.

Typical use and users

Primary users include EMC/EMI test laboratories, antenna calibration laboratories, test‑equipment manufacturers, product compliance engineers, certification bodies, and accreditation organizations. The standard is used to calibrate and qualify antennas that will be used to make radiated‑emission measurements for product compliance and R&D, and to document calibration uncertainty and site qualification.

Related standards

Commonly referenced and related standards include ANSI/IEEE C63.4 (radiated and conducted emission measurement procedures), ANSI C63.10 (testing of wireless devices), ANSI C63.7 (validation of open‑area/test sites), CISPR 16‑1‑5 and CISPR 16‑1‑6 (IEC/CISPR documents on antenna calibration and calibration sites), and other ASC C63 family documents and corrigenda. Newer site‑validation and related documents (for example C63.25.x and C63.2 series updates) may reference procedures or annex material from C63.5‑2017.

Keywords

antenna calibration; antenna factor; antenna qualification; radiated emission; EMI; EMC; standard site method; reference antenna method; equivalent capacitance substitution; 9 kHz–40 GHz; measurement uncertainty; site validation.

FAQ

Q: What is this standard?

A: IEEE/ANSI C63.5‑2017 is the American National Standard that defines methods for calibration and qualification of antennas used for radiated‑emission electromagnetic interference (EMI) measurements across 9 kHz to 40 GHz.

Q: What does it cover?

A: It covers procedures to determine antenna factors and associated calibration parameters, the accepted calibration techniques (SSM, RAM, ECSM, STLM, SAM, SFM), site and geometry requirements, guidance on measurement uncertainty, and supporting annexes (worksheets, reference antenna descriptions, uncertainty estimation methods).

Q: Who typically uses it?

A: EMC/EMI test labs, antenna calibration laboratories, manufacturers performing emissions testing or antenna characterisation, conformity assessment bodies and accreditation organizations use C63.5 to calibrate antennas that will be used for compliance measurements.

Q: Is it current or superseded?

A: The 2017 edition is the current published edition; a corrigendum (C63.5‑2017/Cor 1‑2019) has been issued to amend the 2017 text. Users should check ASC C63 and IEEE publication lists for any further revisions or replacements.

Q: Is it part of a series?

A: Yes — it is part of the ASC C63 family of EMC standards and is intended to be used alongside ANSI C63.4 (emission measurements), ANSI C63.10 (radiated/conducted testing of wireless devices), ANSI C63.7 (site validation) and related IEC/CISPR documents on antenna calibration and site requirements.

Q: What are the key keywords?

A: Antenna calibration; antenna factor (AF); radiated emission; EMI; EMC; standard site method; reference antenna; equivalent capacitance substitution; measurement uncertainty; 9 kHz–40 GHz.