ORBIT FR Open Boundary Wideband Quad Ridge Horns User Manual

REFERENCE ANTENNAS

>

Open Boundary Wideband
Quad Ridge Horns

QH Typical 3D cross-Polarization
radiation pattern

REFERENCE ANTENNAS

> Main use:

• Gain calibration

• Wideband probe for far-field test range

• Reflector feed for high gain applications

> Delivered documents:

• Typical performance data (TYMEDATM)

• Measured return loss data and port-to-port coupling

> Surface treatment:

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

• Blue paint

> Related services:

• Calibration and maintenance

Customization

•

QH Typical 3D co-Polarization
radiation pattern

➊ TECHNICAL PERFORMANCE

• Circular polarization available with external

hybrid coupler

• Uniform gain over operational bandwidth

Dual linear discrimination with high polarization

•

purity and isolation

• Low VSWR

• Wide bandwidth

➋ DESIGN

• Prevents excitation of unwanted higher order

modes in the aperture

• Smooth radiation pattern over the operational

bandwidth

• Lightweight for easy handling

➌ REPEATABILITY

• Stiff and robust mechanical design

Standard SATIMO circular interface for precision

•

centering

• Precision pin for accurate polarization alignment

• Precision machined

• High reliability connector

> Measurement antennas

33

QH 400 performance

❚ @ 3 GHz Normalized Elevation Patterns (E – H plane) - Lower Port

Pattern E-plane lower port @ 3 GHz

❚ @ 3 GHz Normalized Elevation Patterns (E – H plane) - Upper Port

Pattern E-plane PORT 2 @ 3 GHz

Pattern H-plane lower port @ 3 GHz

Pattern H-plane PORT 2 @ 3 GHz

34

QH 2000 boresight gain vs frequency