Technical Notes - Ultra Wideband Antennas
LINKS: Flat Panel > Sector > Omni > Ultra Wideband > Helix > Primary Specification
ULTRA WIDEBAND Planar Spiral, Omni and Multi-Stacked Omni Antennas
OMNI, MULTI-STACKED
Wideband omni antennas can be 'stacked' so that several antennas may be designed into a single housing
A single mounting point on any vehicle
New feed-through technology allows multiple antennas to be co-located
Ultra wideband omnis in a single package, for example 100MHz to 6GHz with two connectors
Overlapping frequencies for multipe applications and operational scenarios
High isolation between bands (17dBi minimum)
200W per band simultaneously
Similar footprint to existing designs
Good return loss across all bands
Optional NATO spring mounting arrangements available
Some of the 'building block' antennas that can be integrated into multi-stack omni arrays:
| XPO2V-0.8-6.0GF/1441 | XPO2V-2.0-18.0/1397 | XPO2V-1650-3000/1354 | XPO2V-1.0-6.0/1442 |
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CAVITY BACKED PLANAR SPIRAL ANTENNAS
Very wideband: 0.5 to 4GHz, 2 to 18GHz
Can be used stand-alone or as part of a DF (Direction Finding) array
Phase and/or amplitude matched to provide accurate DF
Gain 0 to 5dBiC
Circular polarisation
HPBW 50° to 90° across the band
* Illustration demonstrates relative sizes of planar spiral antennas at different frequencies.
HIGH POWER SPIRAL ANTENNA
High power and ultra wideband
Directional, with gain up to 8dBiC
Circular polarisation provides better chance of jamming
Flat panel can be disguised if necessary
Bi-directional option
| PSA0218R/1278 | FPA3-0.8-6.0R/139 | PSA0818R/1308 |
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ULTRA WIDEBAND, EXTENDED PERFORMANCE, OMNI ANTENNAS
Biconical omnis are fully efficient, vertically polarised antennas
Depending on configuration, bandwidths from 3:1 to 30:1 are achievable
Frequencies from 100MHz to 18GHz
Ground plane independent
Vertically polarised
Elevation HPBW typically 30° to 60°
Gain is typically 0 to 2dBi across the band
High power
Excellent azimuth patterns
Peak gain on horizon across all bands
* The illustration compares relative sizes of multi-octave antennas at different frequencies.
| XPO2V-500-1300/1351 | XPO2V-880-2175/1060 | XPO2V-1710-2175/1007 |






