Com-Power AB-300M

Biconical Dipole Antenna | 25 - 300MHz

The Com-Power AB-300M is a linearly polarized biconical dipole antenna with a frequency range of 25 - 300MHz. This device has an isotropic gain of -20... +1dB and a power handling capability of up to 50W. Additionally, this device can be used to comply with the ±1dB antenna symmetry/balance requirements of ANSI C63.5 and CISPR 16-1-4.

Product Info Related Products

Frequency Range	25 - 300MHz
Polarization	Linear
Ant. symmetry (balance)	<1dB
Nominal impedance	50Ω
Power handling	50W
Connector	N-type
Isotropic gain	-20... +1dB

Front-mounted balun transformer — improved antenna design relocates the balun near the front of the antenna just behind the element connections, enhancing performance over conventional rear-balun biconical layouts.
Choice of fixed or collapsible elements — standard fixed elements for permanent lab installation, or optional polished-aluminum collapsible elements with insertable gamma-match rods for easier transport and storage.
Optional 5 dB impedance-matching attenuator — available factory-fitted to satisfy the minimum 10 dB return-loss requirement of CISPR 16-1-4 without requiring an external pad.
Transmit and receive capability — functions as a receiving antenna for emissions measurements and as a transmitting antenna for radiated immunity testing with up to 50 W input power.
Durable powder-coated aluminum elements — corrosion-resistant aluminum with a powder-coated finish for extended service life in lab and field environments.

Used for regulatory compliance measurements (FCC, CE, MIL-STD-461, RTCA DO-160, FDA, SAE Automotive, and similar applications).
Can be used in conjunction with an RF power amplifier (<50W) to generate RF fields associated with radiated immunity testing of products.
Test site comparisons
Shielding effectiveness tests of large enclosures
Field monitoring
Site surveys