SBA 9113 B – Microwave Biconical Broadband Antenna

The SBA 9113 B design is based on the popular SBA 9113, but with a balun modified for low frequency operation down to 80 MHz. The outstanding high frequency performance of the 9113-balun could be preserved combined with a remarkable extension for low frequencies. Therefore the SBA 9113 B can be used as a frequency selective field probe for immunity testing, e.g. according to IEC 61000-4-3 in combination with a spectrum analyser or an EMI-receiver. A fieldstrength of 1 V/m leads to receiver readings of 60-95 dBµV, depending on the frequency. Although the SBA 9113B can be connected directly to receivers up to fieldstrength levels of 30 V/m, we generally recommend the use of a fixed pad at the antenna connector. This provides a better measurement accuracy because of better impedance matching and helps to shift the output level in suitable ranges even for highest fieldstrength levels.

The typical applications of the microwave biconical Antenna are the evaluation of test sites, the (frequency selective) fieldstrength measurement and the generation of defined fieldstrength (e.g. ERP or EIRP). Thanks to the wide bandwidth there is no need for a time consuming change of the antenna elements as required when operating with tuned half-wave dipoles. The biconical elements allow a continuos sweep over the complete frequency range. Because of the dipole-like directional pattern, the fixed phase center and the high power handling capability the SBA 9113 B may replace tuned half-wave dipoles in many applications.

Frequency range:	80 MHz – 3 GHz
Connector:	50 Ohm, N-female
Mounting tube:	LH=560mm, d=22 mm
Index Ring:	LR=190mm
Element length total:	LE =140 mm
Element diameter:	D = 49 mm
Element fixture:	M 4
Isotropic gain:	typ. -1.5….+1.5 dBi (600 MHz – 3 GHz)
Antenna Factor:	25 … 60 dB/m
SWR typ.:	1-4
Balun (low loss):	1:1
Inversion Symmetry:	typ. < 0.2 dB (600 MHz – 3 GHz)
Max. Input Power:	20 W
Half-Power Beamwidth (E-plane):	90° – 50°
Fieldstrength Range:	1 mV/m …1000 V/m
Weight:	760 g

Datasheet SBA 9113 B
Fieldstrength