EA7401H
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Type Specification Type Specification The EA7401H “anti-icing” is the latest offering The Easat and uses production techniques fromEA7401H “anti-icing” is the latest offering from Easat from uses production techniques developed and cellular radio technology to developed from cellular radio technology to provide excellent RF performance. provide excellent RF performance. Adopting technology from the antenna which Adopting technology from the as part which is being supplied to the FAA' antenna of the is being supplied to the FAA' as partdepicts ASDE-X program, the 'H' designation of the ASDE-X program, ability to prevent the the EA7401H's the 'H' designation depicts the EA7401H's ability array.prevent the formation of any ice on the to formation of any ice on the array. This antenna makes use of 21 heating This antenna2 makes heat and circulate the elements and fans to use of 21 heating elements and 2 fans of the array. circulate the air around the inside to heat and air around the inside of the array. The antenna offers sub 0.33° azimuth 3dB Beamwidth giving excellent range and azimuth The antenna provides 0.33° azimuth 40ns pulse width without pulse distortion. The resolution andoffers sub operation with 3dB Beamwidth giving excellent range and azimuth resolution and provides squint withwith 40ns pulse width without pulse distortion. with antenna also offers zero operation frequency, making it particularly suitable for use The antenna also offers zero squint with frequency, frequency agile and frequency diverse systems. making it particularly suitable for use with frequency agile and frequency diverse systems. Offering a high standard specification, the antenna includes circular polarisation for Offering a high standard specification, the antenna includes circular of rain clutter. weather penetration and inverse cosec 2 beam shaping to minimise effects polarisation for 2 weather penetration and inverse -40° below theshaping tolow weight effectslow noiseclutter. Additionally, coverage down to cosec beam horizon, minimise and of rain a lso Additionally, coverage down to -40° on top of horizon, low weight makes the EA7401H ideal for mountingbelow theVisual Control Rooms. and low noise a lso makes the EA7401H ideal for mounting on top of Visual Control Rooms. Key features include: KeyParallel feed array – no squint with frequency features include:   Low cost of ownership  Parallel feed array – no squint with frequency  Low cost of ownership  Sub 0.33º azimuth beamwidth  Low wind resistance  Sub 0.33º azimuth beamwidth Cosec2 beamshape  Low wind resistance  Circular polarisation and Inverse  Wide bandwidth  Circular polarisation and Inverse Cosec2 beamshape  Wide bandwidth General & Mechanical Environmental General & Mechanical Environmental Type Linear Array 150 km/hr (operational) Wind Speed Type Linear Array 150 km/hr (operational) Nominal dimensions (m) 7.8 x 0.25 x 0.5 240 km/hr (survival) Wind Speed Nominal dimensions (m) gear & 7.8 x 0.25 x 0.5 240 km/hr (survival) Total weight (incl. turning 350 Temperature -30ºC - + 60ºC Total weight (incl. turning gear & motor) (kg) 350 Temperature -30ºC - + 60ºC motor)Weight (steel) (kg) Stand (kg) 100 Humidity Up to 100% Stand Weight (steel) & stand (m) 100 Humidity Up to 100% Height incl. Pedestal (kg) 1.35 Altitude SL to 2500 m Height incl. Pedestal & stand (m) 1.35 Altitude SL to for Coastal Suitable 2500 m Max Swept radius (m) 3.7 Protection Suitable for Coastal Environment. Max Swept radius (m) 3.7 Protection Environment. Rotation rate (typical) 60 rpm Design Life 20 years Rotation rate (typical) 60 rpm Design Life 20 years Electrical Specification Electrical Specification Beam Characteristics 'X' Band, Squintless, operating between 9.0 - 9.5 GHz Beam Characteristics 'X' Band, Squintless, operating between 9.0 - 9.5 GHz Gain 35.5 dBi at 9.5GHz Gain 35.5 within the operating frequency Option 1) ≤1.3:1 @ 2 spot frequenciesdBi at 9.5GHz VSWR Option 2) ≤1.4:1 @ 2 spot frequencies within the operating frequency 1) ≤1.3:1 over a selected 200MHz band Option VSWR Azimuth 3dB Beamwidth Option 2) ≤1.4:1 over a selected 200MHz nominal 0.32º band Azimuth 3dB Beamwidth 0.32º nominal Within ±10° Backlobes Azimuth Sidelobes Within ±10° Backlobes ≤ -26dB ≤ -40dB Azimuth Sidelobes ≤ -26dB Cosec2 to -40º below horizon ≤ -40dB Elevation Beamshape Inverse Elevation Beamshape Inverse Cosec2 to -40º below horizon Elevation 3dB Beamwidth 15° ± 4° Elevation 3dB Beamwidth ICR ≤ -17dB in 15° ± 4° El. planes Az. and ICR ≤ -17dB in Circular El. planes Az. and Polarisation Polarisation Circular Options Options dual 4096 or 8192 count encoders; gearbox heaters. Single or Single or dual 4096 or 8192 count encoders; gearbox heaters. Specifications are subject to change as part of Easat’s ongoing improvement policy. Customers are advised to confirm specification prior to contract. Specifications are subject to change as Goodwin House, Leek Road, Hanley, Stoke on Trent, Staffordshire, ST1 3NR, UK prior to contract. Easat Antennas Ltd, part of Easat’s ongoing improvement policy. Customers are advised to confirm specification Easat Antennas Ltd, Goodwin Jubilee Leek Ivy House Road, Hanley, Stoke-On-Trent, ST1 3NW, Easat RadarTel/Fax: +44 (0)1782 208028/208060 Road, Hanley, Stoke on Trent, Staffordshire, ST1 3NR, UK England Systems Ltd, Unit 1 House, Site, email: antenna@easat.co.uk Web: www.easat.co.uk Tel/Fax: +44 Linear Array Antenna Heated (0)1782 208028/208060 email: antenna@easat.co.uk Web:/ www.easat.co.uk ©Easat Antennas Ltd Rev 1 Sep - 2011 Telephone: +44 (0)1782 208028 Array Antenna Heated Linear Fax: +44 (0)1782 208060 E