Com-Power AH-826 Manuel d'instruction - Page 9

Parcourez en ligne ou téléchargez le pdf Manuel d'instruction pour {nom_de_la_catégorie} Com-Power AH-826. Com-Power AH-826 10 pages. Horn antenna

7.0 Theory of Operation

7.1

Overview

Broadband antennas allow measurement of signals over a wide frequency range. Model AH‐

826 Horn Antennas are broadband antennas that operate in the frequency range of 18 to

26.5 GHz.

Model AH‐826 can both receive and Transmit over the frequency range of operation and is

used for susceptibility and emissions testing in EMC Laboratories.

Before the Horn antennas are used for measurement they have to be calibrated. During

calibration of a known field strength (dBµV/m) is generated around the antenna at each

frequency at predetermined intervals between 18 GHz – 26.5 GHz. The difference between

field strength (dBµV/m) received by the antenna and known field strength generated

(dBµV/m) is the antenna factor (dB/m) for that frequency. During EMC testing the antenna

factor for the frequency of interest is added back to reading on the EMI meter or spectrum

analyzer to calculate the field strength measured by the antenna.

Field strength (dBµV/m) = Output measured (dBµV) + Antenna Factor (dB/m)

When using the AH‐826 antenna for transmitting application, please refer to Table 8.1 to

determine the power requirements to generate the desired electro‐magnetic field.

19121 El Toro Road Lake Forest, CA 92676 ● (949) 459‐9600● fax (949) 459‐9604 ● com‐power.com

Page 9 of 10

INSTRUCTION MANUAL

Horn Antenna (AH‐826)

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