ORBIT FR Closed Wideband Quad Ridge Horns User Manual

REFERENCE ANTENNAS

>

Closed Wideband
Quad Ridge Horns

QR 2000

QR Typical 3D cross-Polarization
radiation pattern

QR Typical 3D co-Polarization
radiation pattern

QR 18000

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

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

37

Mechanical drawing & interface

M4

ø35.4

ø60

“W”= “H”

ø3 H7

“L”

ø50

Electrical characteristics

Part number QR 2000 QR 18000

Type of antenna Closed wideband Closed wideband

quad ridge horn quad ridge horn

Frequency range 2 – 18 GHz 18 – 40 GHz

Average gain 7 – 21 dBi 14 – 18 dBi

Average VSWR < 1.9:1 < 1.9:1

Return loss < -10 dB < -10 dB

Polarization Dual linear Dual linear

Cross polar
Discrimination > 25 dB (typical) > 30 dB (typical)

Port-to-port isolation > 30 dB (typical) > 35 dB (typical)

Impedance 50 Ohms 50 Ohms

Mechanical characteristics

Part number QR 2000 QR 18000

Dimensions 257.4 x 125 x 125 134.7 x 48 x 48
H x W x L [mm]

Weight (approx) 1.3 Kg 0.2 Kg

Connector PC 3.5

Material

Aluminum Aluminum

Treatment Alodine 1200

(1)

Female K

(3)

Alodine 1200

Color Blue Blue

Interface Ø 60 mm 60 mm

(2)

Female

(3)

QR2000 Boresight gain versus frequency

QR2000 E plane cut at 10 GHz

QR2000 H plane cut at 10 GHz

38

(1) Huber+Suhner type 23 PC35-50-0-51/199UE
(2) SWMI type 1012-16SF
(3) Equivalent to MIL-C 5541E class 3