Standard Gain Horns
NSI offers a complete line of Standard Gain Horn (SGH) antenna 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 40 GHz
Includes waveguide to coaxial transition
Includes mounting flange
Include theoretical data for gain relative to an isotropic radiator (dBi)
versus frequency.
Constructed on aluminum with a paint/iridite finish.
Typical gain accuracy ±0.5 dB
Gain reference measurements are made by measuring the power of levels of both the antennas under test and a SGH. The Gain, in decibels, of the AUT can be calculated by using the expression:
GAUT = GSGH Theoritical + (PAUT measured - PSGH Measured)
Where:
GAUT
= Calculated gain of the AUT (in dBi)
GSGH Theoritical
= Theoritical gain of the SGH (in dBi)
PAUT Measured
= Measured power of the AUT (in dB)
PSGH Measured
= Measured power of the SGH (in dB)
Care must be taken to match the line and
inputs of both the AUT and SGH to obtain accurate results.
| NSI Model | Frequency (Ghz) | Waveguide Band | Nominal Gain (dBi) | Weight | Height | Width | Length | Connector |
| NSI-RF-SG975 | 0.75 - 1.12 | WR975 | 14 | 21.0 lbs (9.5 kg) |
16.86 in (50.4 cm) | 22.83 in (58.0 cm) | 23.70 in (60.2 cm) | N (f)* |
| NSI-RF-SG770 | 0.96 - 1.45 | WR770 | 14 | 17.0 lbs (7.7 kg) |
16.25 in (41.3 cm) | 21.93 in (55.7 cm) | 23.20 in (58.9 cm) | N (f)* |
| NSI-RF-SG650 | 1.12 - 1.7 | WR650 | 16 | 14.0 lbs (6.3 kg) |
16.25 in (41.3 cm) | 21.93 in (55.7 cm) | 21.80 in (55.4 cm) | N (f)* |
| NSI-RF-SG510 | 1.45 - 2.2 | WR510 | 16 | 10.0 lbs (4.5 kg) |
12.75 in (32.4 cm) | 17.2 in (43.7 cm) | 17.10 in (43.4 cm) | N (f)* |
| NSI-RF-SG430 | 1.7 - 2.6 | WR430 | 16 | 6.5 lbs (2.9 kg) |
10.75 in (27.3 cm) | 14.51 in (36.9 cm) | 14.40 in (36.6 cm) | N (f)* |
| NSI-RF-SG340 | 2.2 - 3.3 | WR340 | 16 | 4.5 lbs (2.0 kg) |
8.50 in (21.6 cm) | 11.47 in (29.1 cm) | 11.40 in (29.0 cm) | SMA (f) |
| NSI-RF-SG284 | 2.6 - 3.95 | WR284 | 18 | 6.5 lbs (2.9 kg) |
9.45 in (24.0 cm) | 12.76 in (32.4 cm) | 20.70 in (52.6 cm) | SMA (f) |
| NSI-RF-SG229 | 3.3 - 4.9 | WR229 | 18 | 4.5 lbs (2.0 kg) |
7.62 in (19.4 cm) | 10.29 in (26.1 cm) | 16.70 in (42.4 cm) | SMA (f) |
| NSI-RF-SG187 | 3.95 - 5.85 | WR187 | 18 | 3.2 lbs (1.5 kg) |
6.30 in (16.0 cm) | 8.51 in (21.6 cm) | 13.10 in (33.3 cm) | SMA (f) |
| NSI-RF-SG159 | 4.9 - 7.05 | WR159 | 18 | 2.3 lbs (1.0 kg) |
5.29 in (13.4 cm) |
7.14 in (18.1 cm) |
11.60 in (29.5 cm) |
SMA (f) |
| NSI-RF-SG137 | 5.85 - 8.2 | WR137 | 22 | 6.0 lbs (2.7 kg) |
8.42 in (21.4 cm) |
11.36 in (28.9 cm) |
20.40 in (51.8 cm) |
SMA (f) |
| NSI-RF-SG112 | 7.05 - 10 | WR112 | 18 | 2.0 lbs (0.9 kg) |
3.73 in (9.5 cm) |
5.04 in (12.8 cm) |
9.40 in (23.9 cm) |
SMA (f) |
| NSI-RF-SG90 | 8.2 - 12.4 | WR90 | 22 | 3.0 lbs (1.4 kg) |
5.67 in (14.4 cm) |
7.65 in (19.4 cm) |
14.90 in (37.8 cm) |
SMA (f) |
| NSI-RF-SG75 | 10 - 15 | WR75 | 25 | 3.5 lbs (1.6 kg) |
5.94 in (15.1 cm) |
7.24 in (18.4 cm) |
18.90 in (48.0 cm) |
SMA (f) |
| NSI-RF-SG62 | 12.4 - 18 | WR62 | 25 | 3.0 lbs (1.4 kg) |
4.91 in (12.5 cm) |
5.98 in (15.2 cm) |
15.60 in (39.6 cm) |
SMA (f) |
| NSI-RF-SG51 | 15 - 22 | WR51 | 25 | 2.3 lbs (1.0 kg) |
4.04 in (10.3 cm) | 4.92 in (12.5 cm) | 14.80 in (37.6 cm) | HF SMA (f) |
| NSI-RF-SG42 | 18 - 26.5 | WR42 | 25 | 1.5 lbs (0.7 kg) |
3.28
in (8.3 cm) |
4.00 in (10.2 cm) | 11.20 in (28.4 cm) | HF SMA (f) |
| NSI-RF-SG34 | 22 - 33 | WR34 | 25 | 1.3 lbs (0.6 kg) |
2.69
in (6.8 cm) |
3.28 in (8.3 cm) | 9.60 in (24.4 cm) | 2.9mm (f) |
| NSI-RF-SG28 | 26.5 - 40 | WR28 | 25 | 1.1 lbs (0.5 kg) |
2.23
in (5.7 cm) |
2.72
in (6.9 cm) |
7.50 in (19.1 cm) | 2.9mm (f) |
| 33 - 50 | WR22 | 25 | 0.2 lbs (0.1 kg) |
2.05
in (5.2 cm) |
2.17
in (5.5 cm) |
6.53
in (16.6 cm) |
None (flange only) |
|
| 50 - 75 | WR15 | 25 | 1.1 lbs (0.1 kg) |
1.26 in (3.2 cm) |
1.38 in (3.5 cm) |
4.06 in (10.3 cm) |
None (flange only) |
|
| NSI-RF-SG12 | 60 - 90 | WR12 | 25 | 1.1
lbs (0.1 kg) |
1.14
in (2.90 cm) |
1.22
in (3.10 cm) |
3.55
in (9.02 cm) |
None (flange only) |
| 75 - 110 | WR10 | 25 | 1.1 lbs (0.1 kg) |
0.75 in (1.9 cm) |
0.98 in (2.5 cm) |
3.21 in (8.2 cm) |
None (flange only) |
+ W and H are inside dimensions
* Note - N (m) to SMA (f) adapter included
 |
 |
 |
 |
 |
 |
Ordering Information:
NSI-RF-SGXXX
Standard Gain Horn - Includes standard gain horn, waveguide to
coaxial transition(for horns below 40 GHz), mounting flange, theoretical
gain curves and outline and mounting drawing.
Options:
Contact NSI for different connector options.
| Credit Cards accepted. | To request pricing email: sales@nearfield.com |
19730 Magellan Drive, Torrance, CA 90502, USA, Tel: 310.525.7000, Fax: 310.525.7102
Email: sales@nearfield.com. Visit our website: www.nearfield.com