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StandardGainHorns

 

Standard Gain Horns

NSI offers a complete line of Standard Gain Horn (SGH) antennas for gain calibration by the substitution method. All NSI SGHs are designed and built to meet the requirements of NRL Report 4433 and include theoretical gain versus frequency curves. Frequency coverage is based on standard "WR" waveguide bands.

Features:

Frequency coverage from 0.96 to 170 GHz
Includes waveguide to coaxial transition (to 40 GHz)
Includes mounting flange

Includes theoretical data for gain relative to an isotropic radiator (dBi) versus frequency

Constructed of aluminum with a paint/iridite finish high frequency electroform
Typical gain accuracy ±0.5 dB

 

 

NSI Model Frequency Range
(GHz)
Waveguide
Band
Nominal
Gain
(dBi)
Length Height Width Connector Weight
NSI-RF-SG1500 0.49 - 0.75 WR1500 14 59.03 in
(149.9 cm)
36.09 in
(91.7 cm)
48.59 in
(123.4 cm)
N (f)* 123 lb
(55.9 kg)
NSI-RF-SG975 0.75 - 1.12 WR975 14 23.70 in
(60.2 cm)
19.86 in
(50.4 cm)
22.83 in
(58.0 cm)
N (f)* 21.0 lb
(9.5 kg)
NSI-RF-SG770 0.96 - 1.45 WR770 14 23.20 in
(58.9 cm)
16.25 in
(41.3 cm)
21.93 in
(55.7 cm)
N (f)* 17.0 lb
(7.7 kg)
NSI-RF-SG650 1.12 - 1.7 WR650 16 21.80 in
(55.4 cm)
16.25 in
(41.3 cm)
21.93 in
(55.7 cm)
N (f)* 14.0 lb
(6.3 kg)
NSI-RF-SG510 1.45 - 2.2 WR510 16 17.10 in
(43.4 cm)
12.75 in
(32.4 cm))
17.2 in
(43.7 cm)
N (f)* 10.0 lb
(4.5 kg
NSI-RF-SG430 1.7 - 2.6 WR430 16 14.40 in
(36.6 cm)
10.75 in
(27.3 cm)
14.51 in
(36.9 cm)
N (f)* 6.5 lb
(2.9 kg)
NSI-RF-SG340 2.2 - 3.3 WR340 16 11.40 in
(29.0 cm)
8.50 in
(21.6 cm)
11.47 in
(29.1 cm)
SMA (f) 4.5 lb
(2.0 kg)
NSI-RF-SG284 2.6 - 3.95 WR284 18 20.70 in
(52.6 cm)
9.45 in
(24.0 cm)
12.76 in
(32.4 cm)
SMA (f) 6.5 lb
(2.9 kg)
NSI-RF-SG229 3.3 - 4.9 WR229 18 16.70 in
(42.4 cm)
7.62 in
(19.4 cm)
10.29 in
(26.1 cm)
SMA (f) 4.5 lb
(2.0 kg)
NSI-RF-SG187 3.95 - 5.85 WR187 18 13.10 in
(33.3 cm)
6.30 in
(16.0 cm)
8.51 in
(21.6 cm)
SMA (f) 3.2 lb
(1.5 kg)
NSI-RF-SG159 4.9 - 7.05 WR159 18 11.60 in
(29.5 cm)
5.29 in
(13.4 cm)
7.14 in
(18.1 cm)
SMA (f) 2.3 lb
(1.0 kg)
NSI-RF-SG137 5.85 - 8.2 WR137 22 20.40 in
(51.8 cm)
8.42 in
(21.4 cm)
11.36 in
(28.9 cm)
SMA (f) 6.0 lb
(2.7 kg)
NSI-RF-SG112 7.05 - 10 WR112 18 9.40 in
(23.9 cm)
3.73 in
(9.5 cm)
5.04 in
(12.8 cm)
SMA (f) 2.0 lb
(0.9 kg)
NSI-RF-SG90 8.2 - 12.4 WR90 22 14.90 in
(37.8 cm)
5.67 in
(14.4 cm)
7.65 in
(19.4 cm)
SMA (f) 3.0 lb
(1.4 kg)
NSI-RF-SG75 10 - 15 WR75 25 18.90 in
(48.0 cm)
5.94 in
(15.1 cm)
7.24 in
(18.4 cm)
SMA (f) 3.5 lb
(1.6 kg)
NSI-RF-SG62
12.4 - 18
WR62 25 15.60 in
(39.6 cm)
4.91 in
(12.5 cm)
5.98 in
(15.2 cm)
SMA (f) 3.0 lb
(1.4 kg)
NSI-RF-SG51 15 - 22 WR51 25 14.80 in
(37.6 cm)
4.04 in
(10.3 cm)
4.92 in
(12.5 cm)
HF SMA (f) 2.3 lb
(1.0 kg)
NSI-RF-SG42 18 - 26.5 WR42 25 11.20 in
(28.4 cm)
3.28 in
(8.3 cm)
4.00 in
(10.2 cm)
HF SMA (f) 1.5 lb
(0.7 kg)
NSI-RF-SG34 22 - 33 WR34 25 9.60 in
(24.4 cm)
2.69 in
(6.8 cm)
3.28 in
(8.3 cm)
2.9 mm (f) 1.3 lb
(0.6 kg)
NSI-RF-SG28 26.5 - 40 WR28 25 7.50 in
(19.1 cm)
2.23 in
(5.7 cm)
2.72 in
(6.9 cm
2.9 mm (f) 1.1 lb
(0.5 kg)
NSI-RF-SG22 33 - 50 WR22 25 6.53 in
(16.6 cm)
2.05 in
(5.2 cm)
2.17 in
(5.5 cm)
2.4 mm (f) 0.2 lb
(0.1 kg)
NSI-RF-SG19 40 - 60 WR19 25 6.00 in
(15.2 cm)
1.67 in
(4.2 cm)
1.75 in
(4.4 cm))
None
(flange only)
0.2 lb
(0.1 kg)
NSI-RF-SG15 50 - 75 WR15 25 4.06 in
(10.3 cm)
1.26 in
(3.2 cm)
1.38 in
(3.5 cm)
None
(flange only)
0.2 lb
(0.1 kg)
NSI-RF-SG12 60 - 90 WR12 25 3.55 in
(9.02 cm)
1.14 in
(2.9 cm)
1.22 in
(3.1 cm)
None
(flange only)
0.2 lb
(0.1 kg)
NSI-RF-SG10 75 - 110 WR10 25 3.59 in
(9.1 cm)
0.75 in
(1.9 cm)
0.98 in
(2.5 cm)
None
(flange only)
0.2 lb
(0.1 kg)
NSI-RF-SG06 110 - 170 WR6 23 1.26 in
(3.2 cm)
0.48 in
(1.2 cm)
0.63 in
(1.6 cm)
None
(flange only)
0.04 lb
(0.02 kg)

 

Ordering Information:

NSI-RF-SG1500: Standard Gain Horn - Includes standard gain horn, waveguide to coaxial transition, theoretical gain curves and outline drawing. No mounting hardware is supplied.

NSI-RF-SG975 to SG22: Standard Gain Horn - Includes standard gain horn, waveguide to coaxial transition, mounting hardware, small absorber panel, theoretical gain curves and outline drawing.

NSI-RF-SG19 to SG06: Standard Gain Horn - Includes standard gain horn, theoretical gain curves and outline drawing. No mounting hardware supplied.