Model #: AB-300M
Stock #: AB-300M-1
AB-300M Biconical Dipole Antenna — Key Highlights
- ▸ Broadband 25 MHz to 300 MHz Coverage: The AB-300M is a broadband, linearly polarized biconical dipole antenna covering the full lower-VHF EMC band, designed for radiated emissions measurements and radiated immunity testing required by FCC, CISPR, EN, ETSI, MIL-STD-461, RTCA DO-160, and SAE Automotive standards.
- ▸ Front-Mounted Balun Transformer: An improved antenna design relocates the balun near the front of the antenna just behind the element connections — an upgrade over conventional rear-balun biconical layouts that delivers cleaner pattern symmetry and reduced feedline interaction across the operating band.
- ▸ Choice of Fixed or Collapsible Elements: Order the AB-300M-F with rigid, fixed powder-coated aluminum elements for permanent installation in chambers and OATS, or the AB-300M-C with polished-aluminum collapsible elements and insertable gamma-match rods for easier transport, compact storage, and portable EMC work — same calibrated electrical performance, different mechanical configuration.
- ▸ CISPR 16-1-4 Compliant Symmetry: Antenna balance is held to better than ±1 dB, meeting the symmetry requirements of CISPR 16-1-4 and ANSI C63.5 to minimize measurement uncertainty caused by asymmetric pattern response in compliance testing.
- ▸ 50 W Transmit & Receive Capability: Handles up to 50 W continuous input power, allowing the same antenna to function as a receive antenna for emissions measurements and as a transmit antenna for radiated immunity testing per IEC 61000-4-3, automotive ISO 11452, and military RS103 setups when driven by an RF power amplifier.
- ▸ Optional Factory-Fitted 5 dB Attenuator: Each ordering option is available with an integrated 5 dB impedance-matching attenuator (AB-300M-F-A5, AB-300M-C-A5, AB-300M-B-A5) to satisfy the minimum 10 dB return-loss requirement of CISPR 16-1-4 without an external pad.
- ▸ ANSI C63.5 NSA-Ready Geometry: Physical dimensions conform to Figure G.1 of ANSI C63.5, so a matched pair can be used for Normalized Site Attenuation (NSA) calibration of OATS and semi-anechoic chambers using published Geometry Specific Correction Factors (GSCF) — avoiding costly Antenna Calibration Site procedures.
- ▸ Robust 50 Ω N-Type Interface: Standard 50 ohm nominal impedance with a Type-N female RF connector provides reliable signal transfer to EMI receivers, spectrum analyzers, signal generators, and RF amplifiers used in compliance and engineering setups.
- ▸ Compact & Lightweight Construction: 51.5" × 20.2" × 28.5" overall dimensions and 4.5 lb (2 kg) weight make the AB-300M easy to mount on the Com-Power AT-812 Antenna Tripod, AM-400 Antenna Mast, or any 1/4"-20 mounting point via the ATHP-812 Antenna Pipe Holder — suitable for benchtop, chamber, and field deployments.
- ▸ Individually Calibrated, NIST-Traceable, 3-Year Warranty: Each AB-300M is individually calibrated per ANSI C63.5 or SAE ARP958 with NIST-traceable data and a certificate of calibration; ISO 17025 accredited calibration is available on request. Backed by Com-Power’s standard three-year manufacturer warranty.
