0.8-4.0GHz Cavity Backed Spiral Antenna OBS-840
0.8-4.0GHz Cavity Backed Spiral Antenna OBS-840

0.8-4.0GHz Cavity Backed Spiral Antenna OBS-840


The OBS-840 is a compact, moderate gain, moderate VSWR, circularly-polarized cavity-backed spiral antenna designed to transmit and receive in the frequency band of 0.8 GHz to 4.0 GHz.  The antenna exhibits an excellent impedance match and radiation pattern.

It is capable of receiving both linearly polarized signals and a circularly polarized signal.The linear gain (dBil) is about 3 dB lower than the circular gain (dBic).


Model:
Maximum:4


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Part No. OBS-840
Frequency* 0.8GHz-4.0GHz
Nominal Gain3 dB 0.6 Typ~2.2Typ
VSWR 2.51Maximum2.0:1 Typical
Pattern Directional Bean
3 dB Beamwidth 65°MinimumTypical
10 dB  Beanwidth 120° Typical
Input Impedance 50 Ohms Nominal
Input Connector SMA-female