The Agilent/Keysight 11955A is a biconical antenna engineered for electromagnetic compatibility (EMC) testing across the VHF band. Operating from 30 MHz to 300 MHz with 50 ohm impedance, this antenna delivers reliable signal reception and transmission for radiated emissions and susceptibility measurements. The Type-N female connector integrates into standard test systems, while the 1/4 inch × 20 female threaded mount accommodates typical antenna stands and fixtures.
Technical Specifications
• Frequency Range: 30 MHz – 300 MHz
• Impedance: 50 ohm
• Maximum Continuous Power: 0.5 Watts
• VSWR (average): Less than 1.8:1 (with 6 dB pads)
• Antenna Factors: Typical
• Connector Type: Type-N (female)
• Mounting Base: 1/4 inches × 20 female threads
– Key Features
• Biconical design optimized for broad VHF coverage
• Low VSWR performance with external pads for enhanced matching
• Standardized Type-N interface for laboratory and field installations
• Rated for continuous operation at 0.5 Watts
– Typical Applications
• Radiated emissions testing per FCC, CE, and military standards
• Electromagnetic susceptibility (EMS) measurements
• Site attenuation and validation measurements
• General-purpose VHF antenna arrays in test ranges
– Compatibility & Integration
The 11955A is equivalent to the ETS-Lindgren 93110B and functions as a core component within the Agilent 84115EM test system. Its standardized mounting and connector interfaces enable integration into existing EMC measurement setups.
