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

QH 800 performance

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

Pattern E-plane lower port @ 6 GHz

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

Pattern E-plane PORT 2 @ 6 GHz

Pattern H-plane lower port @ 6 GHz

Pattern H-plane PORT 2 @ 6 GHz

Electrical characteristics

Part number QH 400 QH 800 QH 2000

Type of antenna Open boundary Open boundary Open boundary

wideband wideband wideband
Quad ridge antenna Quad ridge antenna Quad ridge antenna

Frequency range 0.4 – 6.0 GHz 0.8 – 12 GHz 2 – 32 GHz

Average gain 5 – 15 dBi 5 – 15 dBi 5 – 17 dBi

Average VSWR < 1.9:1 < 1.9:1 < 2.5:1 [2-4 GHz]

< 1.9:1 [4-32 GHz]

Average return loss < -10 dB < -10 dB <-7 dB [2-4 GHz]

< -10 dB [4-32 GHz]

Polarization Dual linear Dual linear Dual linear

Cross-polar discrimination > 30 dB > 30 dB [0.8-10.2] GHz
> 25 dB [10.8-12.0] GHz

Port-to-port isolation > 30 dB > 30 dB [0.8-10.8] GHz

> 25 dB [10.8-12.0]GHz

Impedance 50 Ohms 50 Ohms 50 Ohms

> 30 dB

> 30 dB

> Measurement antennas

35

Mechanical characteristics

Part number QH 400 QH 800 QH 2000

Dimensions (approx) H x W X L 527 x 527 x 462 mm 264 x 264 x 245 mm 110 x 105 x 105 mm

Weight (approx) 5 kg 1.2 kg 0.24 kg

Connector PC 3.5 Female

Material Aluminum

Treatment Alodine 1200

(1)

PC 3.5 Female

(2)

Aluminum Aluminum

Alodine 1200

Color Blue Blue Blue

Interface Ø 110 mm 110 mm 60 mm

(1) Huber+Suhner type 23 PC35-50-0-51/199UE
(2) Equivalent to MIL-C 5541E class 3

(1)

(2)

PC 3.5 Female

Alodine 1200

(1)

(2)

QH 400, QH 800 interface

M5

67.2

ø110

Mechanical drawing

“W”= “H”

67.2

ø4 H7

ø65

ø35.4

ø60

QH 2000 interface

M4

ø3 H7

ø50

36

“L”