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
Extended perforance omni 1441 extended performance omni  1397 extended performance omni 1354 extended performance omni 1442

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CAVITY BACKED PLANAR SPIRAL ANTENNASBroadband 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
planar spiral 1278 planar spiral 1329 planar spiral 1308

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ULTRA WIDEBAND, EXTENDED PERFORMANCE, OMNI ANTENNASBroadband omnis

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
extended performance 1351 XP omni 1060 XP omni 1007