ORBIT FR Standard gain horns User Manual

REFERENCE ANTENNAS

>

Standard Gain Horns

Typical 3D radiation pattern

REFERENCE ANTENNAS

> Main use:

• Gain calibration

• Antenna measurements

> Delivered documents:

• Theoretical gain versus frequency information data

•

Measured return loss

> Surface treatment:

• Alodine 1200 according to MIL-C 5541E class 3

• Blue paint

> Related standard:

• NRL report 4433

> Included equipment:

• Mounting fl ange

• Integral coaxial transition with high precision SMA

Female connector

> Related services:

• Calibration and maintenance

• Customization

SMART POSITIONING

The circular interface allows the user
to position and center the antenna
with very high accuracy. The horn
is fastened to the customer’s
mounting support by four screws
and the alignment is determined
by a precision pin in the mechanical
interface plate.

➊ TECHNICAL PERFORMANCE

• Stable gain with frequency

• Linear polarization

• Low return loss / VSWR

➋ DESIGN

• Lightweight for easy handling

• Designed to meet NRL 4433

➌ REPEATABILITY

• Stiff and robust mechanical design

• Standard SATIMO circular interface

for precision centering

• Precision pin for accurate polarization alignment

• Precision machined

• High reliability integral connector

28

Electrical characteristics*

Part number SGH SGH SGH SGH SGH SGH SGH SGH SGH SGH SGH SGH SGH SGH
049 075 096 112 170 260 395 585 705 820 1000 1240 1800 2650

Type of antenna Horn Horn Horn Horn Horn Horn Horn Horn Horn Horn Horn Horn Horn Horn

Frequency range 0.49 – 0.75 – 0.96 – 1.12 – 1.70 – 2.60 – 3.95 – 5.85 – 7.05 – 8.20 – 10.00 – 12.40 – 18.00 – 26.50 –
in GHz 0.75 1.12 1.45 1.70 2.60 3.95 5.85 8.20 10.00 12.40 15.00 18.00 26.50 40.00

Wave guide band WR1500 WR 975 WR 770 WR 650 WR 430 WR 284 WR 187 WR 137 WR 112 WR 90 WR 75 WR 62 WR 42 WR 28

Gain at center
frequency 15.5 15.5 13.7 15.5 15.5 18.0 18.0 22.1 18.0 22.1 24.7 24.7 24.7 24.7

Polarization Linear Linear Linear Linear Linear Linear Linear Linear Linear Linear Linear Linear Linear Linear

VSWR 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1 1.4:1

Return loss < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB < -15 dB

On-axis cross polar
discrimination > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB > 40 dB

Power handling
(continuous wave)
SMA 500 W 500 W 500 W 450 W 360 W 300 W 250 W 190 W 180 W 160 W 150 W 140 W 120 W –
N 1600 W 1600 W 1600 W 1500 W 1000 W 900 W 700 W 600 W 570 W 500 W – 400 W – –
K – – – – – – – – – – – – – 20 W

Impedance 50 Ohms

* Standard gain horn at intermediate frequency ranges are also available.
(1) 25°C at sea level depending on RF connector type.

(1)

SGH 170 H plane cut at 1800 MHz

SGH 170 co & cross polarization vs frequency

SGH 170 H plane cut at 1825 MHz

> Measurement antennas

SGH 170 E plane cut at 2000 MHz

29