Active aerial for radios and aerial arrays

Details Active aerial for radios and aerial arrays Active aerial for radios and aerial arrays

H - Electricity

01

Q

351/60

H01Q 23/00 (2006.01) H03F 3/195 (2006.01)

Patent

CA 1173559

PHQ 80 005 16-9-1980 ABSTRACT "Active aerial". An active aerial for use in car radios and aerial "arrays" comprising an aerial element and an aerial connected thereto. In order to obtain a low distort- ion and a good signal-to-noise ratio in spite of the presence of protection diodes to prevent overloading of the amplifier by atmospherics and in spite of conta- mination of the aerial etc, the input of the active portion of the amplifier is virtually grounded. To this end, the amplifier is preferably an operational amplifier having a high gain factor, the signal input of which is connected to ground, both the signal coming from the aerial element and a signal fed back from an output of the amplifier being applied to the inverting signal input.

380008

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