Scroll Top
Tudor House, Grammar School Road, North Walsham, Norfolk, NR28 9JH, UK

RF516 Hybrid Broadband Antenna

The ideal antenna for EMC emissions and immunity testing

The RF516 is a linear polarised Logarithmic Periodic Broad-band Antenna combined with a 4:1 Broad-band Dipole (Aluminium tubing) for Receive and Transmit Applications.

This provides an ideal antenna for EMC requirements, combining high power rating for immunity testing together with the sensitivity required for emissions measurements.

This antenna includes tripod stand and horizontal/vertical polarisation pivot.

Specification

Nominal Frequency Range 30 MHz – 7 GHz
Usable Frequency Range 25 MHz – 8 GHz
Isotropic Gain (LP-Section) 6.4+/- 1.2 dBi
Antenna Factor 7 – 43 dB/m
Nominal Impedance 50 Ω
Standing Wave Ratio SWR typical <1.5 (f > 150 MHz)
Front to Back Ratio 20 dB (f > 150 MHz)
Weight 3.1 kg
Cross Polarisation >20dB (0.03 – 1 GHz)
3 dB Beamwidth typ. (E-Plane) 45°-65° (f > 150 MHz)
 3 dB Beamwidth typ. (E-Plane 78° (f < 150 MHz)
3 dB Beamwidth typ. (H-Plane) 90°-120° (f > 150 MHz)
Input power N-Connector
Input connector Female 22 mm Tube
Mount 1500 x 1253 x 620 mm
Width x Length x Thickness 1500 x 1253 x 620 mm
  • 30MHz – 6GHz in one antenna
  • No need to change antenna mid-test
  • 200W max power rating
  • 100W continuous rating

Emissions – Antenna Factor

IMMUNITY Field @ 3m. CW,no modulation. Input power at N type connector

Field strength generated under free-space conditions at a separation from the antenna tip (see diagrams for several combinations of pow-er and distance). If environmental reflections are present, this may lead to frequency and height dependent field strengths. The power figures refer to a 50 Ω source and an unmodulated (cw) signal. An 80% Amplitude Modulation requires a 1.8 times higher voltage, re-sulting in 3.24 times higher power compared to cw. A fieldstrength increase of factor 10 requires 100 times amplifier-power.