Horn Antenna,

Sectoral Horns

ATM manufactures a wide array of antenna types. In certain instances the use of the Sectoral Horn is an effective method of achieving ’broadcast’ type coverage required in base station transmission systems. Other uses include narrow field identification required in traffic control systems. Both E and H plane configurations are useable for either vertical or horizontally polarized applications and provide the maximum beam width in the un-flared dimension.

Units we offer are true sectoral horn, parallel side designs. Only one waveguide dimension is flared with the other side remaining parallel. This makes for the large fan type coverage in the unflared plane and a considerably narrower beam in the other.

Please call us with your specification and discuss your needs with one of our design engineers.

Sectoral Horn Antennas

Standard Features:

Input is W/G flange. Multiple types available, see
ATM Flanges for more detail.

Optional Features:

Calibration data - click for typical calibration report
Radome covers
Tripod mounting
Mounting Bracket Options: click for Horn Mounting Application
To illustrate mounting orientation, view an example of a Typical Mounting Option
Coax Input available. For Coaxial input, order an additional mating ATM Right Angle Adapter or Endlaunch Adapter.
Custom Mounts available - click here to view a custom pole-mount application.

GENERAL SPECIFICATIONS -
Horn Antennas

Electrical
Gain:
Typical Gain Variation:
Mechanical
Body: Aluminum
Flanges: Per order, see ATM Std. Flanges for choices
Finish: Unique corrosion resistant 316 stainless steel epoxy coating IAW MIL-F-14072 (above WR22)
Applicable Mil-Specs
General:
Product Specific:

Typical Gain Patterns

The above data plots represent typical gain data for WR187 sectoral horn antennas. Gain shown is a computer simulation taken at the mid band frequency, 5.0 GHz

E Plane Sectoral Horns

WG Size

Frequency
(GHz)

Model No.

Gain
(dB)

3dB Beam
Width**

Approx.
weight

Typical
Data

E-Plane

H-Plane

Size (In)*

WR187

3.95 - 5.85

187-444E-6

14.5

15.50

76.40

7.88

1.87

19.00

WR159

4.90 - 7.05

159-444E-2

14.5

15.50

76.80

6.77

1.59

15.40

WR137

5.85 - 8.20

137-444E-2

14.5

15.10

75.00

5.79

1.37

15.20

WR112

7.05 - 10.0

112-444E-6

14.5

16.00

78.90

4.77

1.12

12.08

WR90

8.20 - 12.4

90-444E-6

14.5

15.50

77.00

3.82

0.90

10.67

WR75

10.0 - 15.0

75-444E-6

14.5

15.40

76.40

3.19

0.75

8.10

WR62

12.4 - 18.0

62-444E-6

14.5

15.50

76.60

2.38

0.62

6.71

WR51

15.0 - 22.0

51-444E-6

14.5

15.50

76.70

2.19

0.51

7.17

WR42

18.0 - 26.5

42-444E-6

14.5

15.50

76.80

1.80

0.42

6.46

WR28

26.5 - 40.0

28-444E-6

14.5

15.50

76.80

1.18

0.28

4.00

Ordering Information	WR	- Mod	- F	- Opt
W/G Horn Antenna
Example part number:	90	-444E	-6	/CAL
Waveguide Size: (WR) WR28 thru WR975
Basic Model No.: (-Mod)
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke See ATM Standard Flange page for more info.
Optional Features: (-Opt) /CAL = Calibration report /RD = Radome cover /BR = Bracket for Mounting

Note: More than one option per Horn is possible. For example:
112-441-6/CAL/RD/BR would contain the above described options.

The Standard Model Numbers above are the most common parts ordered for size, material and flange. However, these models can easily be altered to accommodate your needs by using the Model # code system to the left.

Above models are not supplied with calibration data. Select /CAL option to receive actual Gain vs. Frequency taken in the far field. Click this link for a sample of data: "Calibrate data sample"

*Overall length can vary depending on flange type.

**Gain and 3dB Beam width values have been calculated by computer simulation.

H Plane Sectoral Horns

WG Size

Frequency
(GHz)

Model No.

Gain
(dB)

3dB Beam
Width**

Approx.
weight

Typical
Data

Size (In)*

E-Plane

H-Plane

WR187

3.95 - 5.85

187-444H-6

11.5

102.20

15.50

0.87

11.81

18.45

WR159

4.90 - 7.05

159-444H-2

11.5

99.10

16.00

0.80

9.84

15.06

WR137

5.85 - 8.20

137-444H-2

11.5

103.70

13.60

0.60

8.66

14.04

WR112

7.05 - 10.0

112-444H-6

11.5

104.70

15.30

0.50

7.09

12.09

WR90

8.20 - 12.4

90-444H-6

11.5

104.70

15.40

0.40

5.51

10.40

WR75

10.0 - 15.0

75-444H-6

11.5

99.10

15.30

0.38

5.70

8.67

WR62

12.4 - 18.0

62-444H-6

11.5

98.90

15.50

0.31

4.21

6.87

WR51

15.0 - 22.0

51-444H-6

11.5

99.10

15.50

0.25

3.46

7.44

WR42

18.0 - 26.5

42-444H-6

11.5

108.50

15.00

0.17

2.76

7.00

WR28

26.5 - 40.0

28-444H-6

11.5

99.00

16.80

0.14

1.75

3.52

Ordering Information	WR	- Mod	- F	- Opt
W/G Horn Antenna
Example part number:	90	-444H	-6	/CAL
Waveguide Size: (WR) WR28 thru WR975
Basic Model No.: (-Mod)
Flange (-F): 1=CPRG, 2=CPRF, 6=Cover, 7=Choke See ATM Standard Flange page for more info.
Optional Features: (-Opt) /CAL = Calibration report /RD = Radome cover /BR = Bracket for Mounting

Note: More than one option per Horn is possible. For example:
112-441-6/CAL/RD/BR would contain the above described options.

*Overall length can vary depending on flange type.

**Gain and 3dB Beam width values have been calculated by computer simulation.