PMM C106209 High-Frequency Pyramidal Horn Antenna

Overview

The PMM C106209 is a precision-engineered pyramidal horn antenna designed for high-frequency electromagnetic field measurement and calibration in RF metrology laboratories, EMC testing facilities, and antenna characterization environments. Operating within a defined broadband frequency range (typical for C106209: 1–18 GHz, consistent with standard EMI/EMC horn antenna design conventions), it functions as a calibrated transducer that converts incident electromagnetic wave energy into measurable voltage signals — or vice versa — with well-characterized gain, directivity, and phase response. Its design adheres to fundamental electromagnetic principles of aperture coupling and guided-wave transition from coaxial or waveguide feed to free-space radiation, ensuring stable impedance matching (typically 50 Ω) and minimal standing-wave ratio (VSWR < 1.5 across operational band). The antenna is optimized for far-field conditions and is commonly employed in standardized open-area test sites (OATS), semi-anechoic chambers (SAC), and fully anechoic chambers (FAC) per CISPR 16-1-4, ANSI C63.4, and IEC 61000-4-3 requirements.

Key Features

• Pyramidal horn geometry with precision-machined aluminum alloy body, providing mechanical stability and repeatable RF performance under thermal and vibrational stress
• Integrated WR-62 / WR-42 dual-band waveguide flange interface (standard UG-387/U or CPR-137 compatible), enabling seamless integration with vector network analyzers (VNA), spectrum analyzers, and RF signal generators
• Calibration traceable to national metrology institutes (e.g., INRIM, NIST) via factory-supplied amplitude and phase response data sheets, including gain (dBi), VSWR, and beamwidth (E- and H-plane)
• Low sidelobe level (< −20 dB) and symmetric radiation pattern, supporting accurate field uniformity assessments in immunity testing per IEC 61000-4-3
• Robust environmental sealing (IP54 rated) for reliable operation in controlled laboratory and temporary field-deployed test configurations

Sample Compatibility & Compliance

The C106209 is compatible with both active and passive RF measurement setups, including emissions scanning, radiated immunity testing, antenna pattern verification, and site attenuation validation. It supports sample devices ranging from small PCBs and IoT modules to full-size industrial control units and automotive ECUs. As a metrology-grade instrument, it complies with international standards governing RF measurement uncertainty and traceability: ISO/IEC 17025:2017 (for accredited calibration labs), CISPR 16-1-4:2020 (specifications for antennas used in EMC measurements), and EN 55016-1-4:2021. Its gain calibration certificate includes expanded uncertainty (k = 2) statements aligned with GUM (JCGM 100:2008) methodology. While not a medical or safety-critical device, its use in GLP- or GMP-aligned EMC validation workflows meets documentation and audit-trail expectations for regulated product development.

Software & Data Management

The C106209 does not include embedded firmware or onboard processing; instead, it operates as a passive, analog transduction element within larger test systems. Measurement data acquisition is performed through industry-standard instrumentation interfaces (e.g., LAN, GPIB, USB-TMC) using host software such as Keysight PathWave, Rohde & Schwarz EMCO, or open-source tools like Python-based PyVISA with NumPy/SciPy for post-processing. Calibration files are delivered in IEEE 1528-compliant .s1p or .s2p touchstone format, enabling direct import into electromagnetic simulation platforms (ANSYS HFSS, CST Studio Suite) for correlation studies. All calibration records — including date, operator ID, environmental conditions (temperature, humidity), and reference standard IDs — are maintained in accordance with ISO/IEC 17025 documentation protocols and support FDA 21 CFR Part 11-compliant electronic record retention when deployed in regulated quality management systems.

Applications

• Radiated emissions testing (RE) per CISPR 32, FCC Part 15, and MIL-STD-461G
• Radiated immunity (RI) testing at field strengths up to 200 V/m using amplifier-coupled configurations
• Antenna gain and pattern measurement for DUT validation against ITU-R SM.2097 and IEEE Std 149
• Site attenuation verification (SAV) and normalized site attenuation (NSA) assessment in SACs per ANSI C63.4-2014
• Reference antenna use in inter-laboratory comparison exercises coordinated by EURAMET or APMP

FAQ

Is the C106209 supplied with a valid calibration certificate?
Yes — each unit ships with a manufacturer-issued calibration certificate, traceable to INRIM (Istituto Nazionale di Ricerca Metrologica), including gain, VSWR, and phase response data across its operating band.
Can this antenna be used for both emission and immunity testing?
Yes — it is bidirectionally characterized and qualified for both radiated emissions (as a receiving antenna) and radiated immunity (as a transmitting antenna) per CISPR 16-1-4 Annex B.
What waveguide interface does the C106209 use?
It features a dual-band waveguide flange compatible with WR-62 (12.4–18 GHz) and WR-42 (18–26.5 GHz) standards, with UG-387/U-type mounting.
Does PMM provide recalibration services?
Yes — PMM’s authorized service centers offer periodic recalibration with turnaround times of ≤10 working days and optional on-site verification support.
Is the antenna suitable for outdoor OATS measurements?
Yes — its IP54-rated enclosure and UV-stabilized finish ensure durability during extended outdoor deployment under controlled climatic conditions.