Acceptance Test Procedure for On-board TUR Antenna 2012

ACCEPTANCE TEST PROCEDURE

FOR

ON-BOARD TARGET UPDATE RECEIVER ANTENNA

Version 1.010 Jan 2012

Document No. PGAD/7777/3/W

Prepared By:

Ravi Ranjan, Sc ‘B’PGAD, (WS)

Reviewed By:

M Suneel, Sc ‘D’ A.P.Dabhade, Sc ‘D’ T. Satyanarayana PGAD, (WS) R & QA, PGAD Principal Director, MSQAA

Approved By:

D.S.Reddy, Sc ‘G’Programme Director, AD

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Acceptance Test Procedure for On-board TUR Antenna 2012

1. Introduction

The airborne antenna of Target Update Receiver is for receiving the signal transmitted from ground antenna of Target Update Transmitter.

The Specifications of the TUR antenna is as follow:

Frequency range : 1.7 GHz-1.85 GHzV.S.W.R : < 1.5:1Gain : 7 dBi +/- 1dB (typical)Polarization : LinearBeamwidth : 700

Typical measurements of VSWR:

Frequency(GHz)

Specified(dB)

Measured forS/N:OB_01_11

Measured forS/N:OB_02_11

Measured forS/N:OB_03_11

1.7 1.5 1.12 1.16 1.151.78 1.5 1.22 1.28 1.16185 1.5 1.15 1.16 1.04

Typical Radiation patterns:

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Acceptance Test Procedure for On-board TUR Antenna 2012

Typical Gain measurements:

Frequency(GHz) Specified (dB) Measured (dB)1.7 7 +/- 1 6.61.78 7+/- 1 7.01.80 7+/- 1 6.21.85 7+/- 1 6.1

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Acceptance Test Procedure for On-board TUR Antenna 2012

Typical 3db Beamwidth:

Frequency(GHz) Specified Measured1.7 700 720

1.75 700 700

1.85 700 670

2) Acceptance Test

ESS shall be conducted as acceptance test. VSWR should be measured during all PREET, INSET & POET. The measured VSWR should be entered in table . ESS shall consist of following tests:

a) Pre-random Vibration

The vibration levels are as given below:

20Hz to 100Hz +6 db/Octave 100Hz to 1000Hz 0.04 g2/Octave 1000Hz to 2000Hz -6db/Octave

Duration of Vibration test shall be 300ms along mounting axis only. Measured VSWR shall be <1.5:1.

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Acceptance Test Procedure for On-board TUR Antenna 2012

a) Thermal Cycling:

The profile shall be as given below:

Measured VSWR shall be <1.5.

b) Post Random Vibration

Post Random Vibration will be identical to Pre-random Vibration.

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Acceptance Test Procedure for On-board TUR Antenna 2012

ESS

S.No. ____________ Date ___________

1. Pre random vibration

Frequency Spec. VSWR PREET INSET POET Result/Remarks

1.7 GHz < 1.5

1.78 GHz < 1.5

1.85 GHz < 1.5

2. Thermal-cycling

Frequency Spec. VSWR(dB)

PREET POET Result/Remarks

1.7 GHz < 1.5:11.78 GHz < 1.5:11.85 GHz < 1.5:1

3. Post random vibration

Spec PREET INSET POET Result/Remarks

1.7 GHz < 1.5

1.78 GHz < 1.5

1.85 GHz < 1.5

Cleared /Not Cleared

Rep, Project AD (WS) Rep, MSQAA

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