Model:ATSK-CK900D
Antesky have much experience to supply C/KU dual bands receive only antenna,which can operate at C-band receiving as 3.4-4.2GHz and Ku-band receiving as 10.95-12.75GHz.And Antesky have supplied many units of 9.0m C/KU dual bands receive only antenna for foreign and domestic market, Antesky is a professional multiband antenna manufacturers.
1.9.0M C/KU Dual bands receive only antenna fuction requirements
1）Antenna diameter：9m
（2）Antenna type：Modified Cassegrain antenna with main and sub-reflector
（3）Antenna pedestal type:Kingpost
（4）Antenna travel range:AZ：±80°、El：0～90°
（5）Polarization mode: C-band:Dual circular /dual linear
Ku-band:Dual circular /dual linear
Polarization adjusting mode:Motorized
（6）Wind resistance ability:
Tracking with guaranteed accuracy:steady 13m/s；gusting to 20m/s
Tracking with lower accuracy:steady 20 m/s；gusting to 27 m/s
Collecting wind speed:35 m/s（drive antenna to the collecting location toward sky）
Survival wind speed:≤55 m/s（antenna without damage at collecting position, and without permanent deformation.）
（7）Safety protection function:Software limit, hardware limit
（8）Three-proof function:
Moisture proof, mould proof and rust protection function.No obvious corrosion within lifetime. The steel part adopts hot spraying zinc treatment, then coat with anti-corrosive primer; lastly paint with white finishing coat. while the aluminum part adopts anodic oxidation treatment, and then coat with zinc yellow primer, paint the surface with white paint.
（9）Designed lifetime of antenna mechanical structure:15 years.
2.9.0M C/KU Dual bands receive only antenna Technical Specification
（1）Antenna surface accuracy:main reflector surface:≤0.5mm（rms）
Sub-reflector surface:≤0.15mm（rms）
（2）Receiving working frequency:C-band:3.4～4.2 GHz
Ku-band:10.95～12.75GHz
（3）Antenna gain(feed output port):C-band:≥49.9+20log(f/4) dBi（efficiency η≥70%）
Ku-band:≥59+20log(f/11.85) dBi（efficiency η≥65%）
（4）Antenna noise temperature:(feed output port)
C-band:≤50°K（EL=10°,clear sky without wind）
Ku-band:≤75°K（EL=10°,clear sky without wind）
（5）Antenna sidelobe character:first sidelobe:≤-14dB
（6）Cross-polarization isolation:≥30dB（on axis）
（7）VSWR of feed system（waveguide output port）:C-band:≤1.35
Ku-band:≤1.35
（8）Feed loss:C-band:≤0.35dB
Ku-band:≤0.55dB
（9）Circular axial ratio of feed system:C-band:≤1.06 （0.5dB）
Ku-band:≤1.15 （1.2dB）
（10）Port-port isolation:Linear:≥30dB
Circular:≥18dB
（11）Frequency isolation:≥30dB
3. Relationship of main interfaces
（1）Numbers of feed output port:C-band:2 ports（RHCP/VLP,LHCP/HLP）
Ku-band:2 ports（RHCP/VLP,HLP/VLP）
（2）Flange of feed output port:C-band:BJ-40
Ku-band:BJ-120
4. Working environment
（1）Operating temperature:-40℃～+55℃（outdoor）
0℃～+40℃（indoor）
（2）Relative humidity:≤100%（outdoor）
≤10%～85%（indoor）
（3）Rainfall resistance ability:Rainfall(Maximum 100mm/h)
（4）Power supply:Single-phase:220±22V,50±1Hz
Three-phase:380±22V,50±1Hz
（5）Seismic ability:horizontal ≥0.3G’/S,vertical ≥0.15G’/S
