Atec Narda-638-639 User Manual download pdf

Waveguide Horns

50 Years of

Excellence

435 MORELAND ROAD • HAUPPAUGE, NY 11788

USA TEL: (1) 631 231-1700 • INT’L TEL: (1) 631 231-1390 • FAX (1) 631 231-1711

E-MAIL: [email protected] • www.nardamicrowave.com

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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.

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