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/ Antennas / Antennas_CD-ROM_Walnut_Creek_September_1996.iso / rf / misc / refgain.gif

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Graphics Interchange Format  |  1996-06-30  |  1MB  |  1936x2408

Labels: autoradiograph | barrier reef | book | bulletin board | earth | sky
OCR: Parabolic Ant enna Gain f=frequency Gob= decibels gain in D=reflector diameter megocycles 30,000 300 20,000 200 10.000 100 9.000 000 90 80 70 5.000 5.000 4,000 3,000 2,000 1,000 900 800 500 400 300 100 Gob=IO log G 20 !og f+ 20 109 D 52.6 (decibels) (Antenna 54 De cent efficient) Fig. Nomogram for determination of apparent power gain, Gab' parabolic reflector frequenct Dsreflector Antenng efticient Nomoqram

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