Plane passive reflector                   

ARTA's passive reflectors are designed for high-grade signal transmission at frequencies up to 26 GHz.

The plane passive reflector may either be mounted in an existing mast on a Ø115 mm standard vertical column or on an optional integrated lattice mast. Templates are available for accurate mounting of foundation bolts.

The passive reflectors and masts may be pre-mounted and lifted in position by helicopter.

The passive reflectors consist of: 
A flat rectangular reflector made of aluminium. The outer surface is spray painted.

A hot dip galvanised mount for accurate reflector adjustment.

An optional lattice mast available in 4 or 6 meter lengths.

An optional radome for de-icing.

 
An optional kit for beam adjustment downward till 21o for integrated lattice mast.
            

                                                                          


  Technical Data 

Reflector size

1.5 x 2 m

2 x 3 m

3 x 4 m

Surface accuracy, RMS

< 0.45 mm

< 0.45 mm

< 0.45 mm

Fine adjustment range both planes

± 5o

± 5o

±5o

Angular deviation at 55 m/s

0.25o

0.25o

0.25o

Nominal ice load

25 mm

25 mm

25 mm

Maximum wind velocity

·         Operation

55 m/s

55 m/s

55 m/s

·         Survival

70 m/s

70 m/s

70 m/s

Optional 4 m lattice mast

·         Adjust. range both planes

N/A

± 10o

± 10o

·         Ground clearance

N/A

2.0 m

1.5 m

Optional 6 m lattice mast

·         Adjust. range both planes

N/A

± 10o

± 10o

·         Ground clearance

N/A

4.0 m

3.5 m

Wind Force at 200km/h (55 m/s) wind


Reflector size
H x W


Height of optional mast


Axial Force Maximum

 


Side Force Maximum


Twisting Moment Maximum


Bending Moment Maximum

meters

meters

N

kp

N

kp

Nm

kpm

Nm

kpm

1.5 x 2 *)

0

8384

855

4047

413

4788

489

0

0

2 x 3 *)

0

16401

1672

7916

807

10368

1057

0

0

2 x 3

4

17264

1760

10192

1039

14439

1472

49203

5016

2 x 3

6

18628

1899

11025

1124

14439

1472

82005

8360

3 x 4 *)

0

33534

3422

16189

1652

26074

2661

0

0

3 x 4

4

33616

3427

18117

1847

31674

3229

98434

10035

3 x 4

6

34763

3544

18951

1932

31674

3229

164057

16725

Wind Force at 252 km/h (70 m/s) wind


Reflector size
H x W


Height of optional mast


Axial Force Maximum


Side Force Maximum


Twisting Moment Maximum


Bending Moment Maximum

meters

meters

N

kp

N

kp

Nm

kpm

Nm

kpm

1.5 x 2 *)

0

13580

1386

6556

669

7755

791

0

0

2 x 3 *)

0

26004

2651

12556

1280

16430

1675

0

0

2 x 3

4

27377

2971

16165

1648

22885

2333

78012

7953

2 x 3

6

29535

3011

17480

1782

22885

2333

13020

13255

3 x 4 *)

0

54320

5543

26223

2676

42236

4310

0

0

3 x 4

4

53371

5441

28711

2927

50183

5116

155994

15903

3 x 4

6

55098

5617

30026

3961

50183

5116

259990

26505


 

Gain of a plane passive reflector
When a plane passive reflector is used, the gain of the passive site is given by:

Gp(dB)=21.45 + 20 log10 ( f ) + 10 log10  [A · cos  a ]

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