The Schwarzbeck SBA 9112 is a compact biconical broadband antenna engineered for omnidirectional field measurements and site validation across microwave frequencies. Operating nominally from 3 GHz to 18 GHz with usable coverage down to 1 GHz, this linearly polarized antenna delivers consistent performance for emission testing, field strength mapping, and nearfield probe applications where broadband response and minimal spatial footprint are critical.
Technical Specifications
• Frequency Range: 3 GHz – 18 GHz nominal; 1 GHz – 18 GHz usable
• Antenna Type: Microwave biconical broadband
• Polarization: Linear
• Impedance: 50 Ω
• Connector: N-female
• Balun: 1:1
• Maximum Input Power: 10 W
• Compliance: CISPR 16-1-4:2007-02 Ed. 2.0
– Key Features
• Isotropic Gain: –4 to +3 dBi (3 GHz – 18 GHz)
• Antenna Factor: 43 to 53 dB/m
• VSWR: Typical 1.5:1 to 5:1 (4 – 18 GHz)
• Inversion Symmetry: <0.5 dB typical (3 – 18 GHz)
• Cross-Polarization Rejection: <–20 dB
• Element Dimensions: 20 mm length, 9 mm diameter
• Mounting Tube: 560 mm length, 22 mm diameter
• Weight: 420 g
• Construction: Aluminum
• Included Accessory: Standard transportation case
– Typical Applications
• Site validation and VSWR evaluation above 1 GHz
• Field strength measurements and defined field generation
• Broadband nearfield probe for compact measurement scenarios
• Test site evaluation and characterization
• ERP/EIRP generation
– Compatibility & Integration
The SBA 9112 extends broadband measurement capability to frequencies above 3 GHz where omnidirectional dipole-type antennas were historically unavailable. When paired with the SBA 9113, combined frequency coverage reaches 0.5 GHz to 18 GHz. An attenuator is recommended if connected to equipment exhibiting high internal VSWR. For emission measurements with stringent limits, horn or log-periodic antennas may provide superior performance. A miniature version is available upon request.
