Radio direction and position finding apparatus

Details Radio direction and position finding apparatus Radio direction and position finding apparatus

G - Physics

01

S

G01S 5/06 (2006.01) G01S 3/02 (2006.01) G01S 3/36 (2006.01) H01Q 3/28 (2006.01) H01Q 3/40 (2006.01) H01Q 21/00 (2006.01) H01Q 21/08 (2006.01) H01Q 25/02 (2006.01) G01S 5/04 (2006.01)

Patent

CA 2332688

An object of the present invention is to provide a selective level measuring apparatus with wider dynamic range of effective value detection, compared with the range by a conventional one. The apparatus according to the present invention comprises a gain control means arranged before an effective value detection section for varying a gain by a control voltage, so that a signal level inputted into the effective value detection section may be kept to be constant level by the gain control means, and the signal level of the signal to be measured is measured and indicated through the control voltage. Performing such operations allows the selective level measuring apparatus for the effective value detection to secure a dynamic range defined by a variable quantity of the gain control means. Accordingly, the present invention provides the wider dynamic range of the effective value detection comparing with that by the conventional one.

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