Days in the Life of AKD Sat-Comm AKD-V12U 1.2m Ku-Band - - PowerPoint PPT Presentation

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Days in the Life of AKD Sat-Comm AKD-V12U 1.2m Ku-Band - - PowerPoint PPT Presentation

Nov 09, 2023 470 likes •703 views

A Few Testing Days in the Life of AKD Sat-Comm AKD-V12U 1.2m Ku-Band Autopointing Driveaway Antenna System Before After WHICH There are two possible Eutelsat Approvals: 1. Characterisation (Production volumes <10 per annum) 2.

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A Few Testing Days in the Life of AKD Sat-Comm

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AKD-V12U

1.2m Ku-Band Autopointing Driveaway Antenna System

Before After

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  • 1. Characterisation (Production volumes <10 per annum)
  • 2. Type Approval (Production volumes >10 per annum)

WHICH

There are two possible Eutelsat Approvals:

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  • 1. Wind Performance
  • 2. Autopointing
  • 3. Range / RF Performance

HOW TO GET APPROVAL

Tests structured into three parts:

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Wind testing is performed in factory and is witnessed by Eutelsat representatives

WIND

EUTELSAT WITNESS AKD ENGINEER

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Purpose built wind testing bench with calibrated weights

WIND

CALIBRATED WEIGHTS

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Forces applied (push and pull) from centre (axial), top (pitch) and sides (yaw)

WIND

FORCE POINTS

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Laser pointing from dish centre to target 8m away

WIND

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Weight table for various antenna sizes

WIND

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Calibrated weights……

WIND

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Callibrated weights!!

WIND

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Target set 8m away

WIND

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Laser on…PULL!!!

WIND

Specification =0.4°

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Autopointing tests are performed by coordination with the Eutelsat hub in Aflenz, Austria

AUTOPOINTING

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13° Vehicle incline testing

AUTOPOINTING

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And the other way

AUTOPOINTING

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And that way too!!

AUTOPOINTING

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Range tests are performed by using the newly Eutelsat approved range here at Catapult

RANGE

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Using a remotely controlled P/T head the system is rotated in azimuth and elevation taking measurements

RANGE

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The transmitter can be seen at the end of the range around 400m away

RANGE

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And finally we get approval!!

APPROVAL

Eutelsat S.A. Auto-Pointing Summary Sheet

Applicant: AKD Satellite Communications Ltd Unit 3 Acorn Business Centre, Oaks Drive, NEWMARKET, SUFFOLK, CB8 7SX GREAT BRITAIN Website : akd-sat-comm.com Email : timw@akd-sat-comm.com Antenna model: 1.2 AKD VSAT Diameter: 1.2 m Standard: M Characterization date: 02-06-2016 Validity period: See remark 5 Last test data submitted on: 02-06-2016 System Description: Antenna system based on a single piece SMC reflector, front fed offset 1.2 m Ku antenna, with two port linear polarization feed, manufactured by AKD Satellite Communications Ltd, for drive-away applications, with HPA maximum permissible rating as per remark 4. Maximum Allowed EIRP: For digital carriers transmitted at the satellite receive contour of 0 dB/K (EESS 502 refers): In the 14.00 - 14.50 GHz band: 37.9 dBW / 40 kHz for an orbital separation from the adjacent satellite > 1.5° 42.5 dBW / 40 kHz for an orbital separation from the adjacent satellite > 2.0° 44.7 dBW / 40 kHz for an orbital separation from the adjacent satellite > 2.5° In the 13.75 - 14.00 GHz band: 36.1 dBW / 40 kHz for an orbital separation from the adjacent satellite > 1.5° 40.6 dBW / 40 kHz for an orbital separation from the adjacent satellite > 2.0° 40.8 dBW / 40 kHz for an orbital separation from the adjacent satellite > 2.5 Tx Frequency: 13.75 - 14.50 GHz Pointing error: < 0.2° Tx XPD: > 25.2 dB within de-pointing angle Rx Frequency: 10.70 - 12.75 GHz Polarization error: < 1.4° Rx XPD: > 23.7 dB within -1 dB contour Remarks: 1 Auto-pointing tests were performed via satellite from Mildenhall with the ERS of Aflenz on the 01-02 June 2016. RF performance tests were performed on one antenna unit at the Catapult test range of Harwell UK on the 28 February and 1st March 2017. 2 The 1.2 AKD VSAT ACU auto-pointing system has been validated with three different Eutelsat satellites, with angles of the polarization plane equal to 3.5°. 3 Transmission is not authorized until the peaking process is completed. 4 Installation of HPAs with a power >50 W is not authorized. 5 The characterisation’s validity is subject to regular submission of patterns to confirm that the system remains compliant with the Eutelsat standard at the inspection date. 6 Any change to the characterised configuration need to be notified to Eutelsat and may be subject to further tests.
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The Perfect Vision Creating