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Atec Narda-638-639 User Manual

Standard gain horns, Waveguide horns, 40 ghz

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Waveguide Horns

50 Years of

Excellence

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182

RF Switching

Products

Active

Components

Power Meters

and Monitors

Fiber Optic

Products

RF Safety

Test Solutions

SatCom

Products

dept26

Products

Passive

Components

2.60-40 GHz

Standard Gain Horns

·

Primary Standard of Antenna Gain

·

7 Models Cover from 2.60 GHz to 40 GHz

Specifications

FREQUENCY

WAVEGUIDE

INPUT

VSWR

WEIGHT

RANGE

MODEL

BAND*

SIZE

COVER FLANGE

(Max)

lbs.

Kg

(GHz)

EQUIVALENT

2.60-3.95

644

S

WR-284

UG-584/U

1.15

6

2.8

3.95-5.85

643

C

WR-187

UG-407/U

1.15

2.3

1.1

5.4-8.20

642

XN

WR-137

UG-441/U

1.15

1.0

0.5

8.20-12.4

640

X

WR-90

UG-135/U

1.15

0.5

0.23

12.4-18

639

KU

WR-62

UG-419/U

1.15

0.2

0.1

18-26.5

638

K

WR-42

UG-595/U

1.15

0.2

0.1

26.5-40

V637

V

WR-28

UG-599/U

1.15

0.1

0.05

*For a complete listing of all band letters and codes in use, refer to

Band Designation Table on page 176.

Patterns for all models in this series conform to the following
description: Beam width in E and H plane varies from 23° at the
highest frequency to 34° at the lowest frequency. Side lobes in
the H plane are all more than 20 dB down. First side lobes in the
E plane are 13 dB down, second side lobes are 18 dB down and
all other E plane lobes are more than 20 dB down.

Gain at Mid Frequency; 16.5 dB (with reference to isotropic radiation)
variation is 1.5 dB over total band about the mid band value.

See Waveguide Flange Data on page 188.