Patent Number: 7,710,311

Title: Short range radar small in size and low in power consumption and controlling method thereof

Abstract: A transmitter section radiates a short range wave to a space. A receiver section has a detector circuit composed of a branch circuit which receives a reflection wave of the short range wave radiated to the space by means of the transmitter section and branches in phase a signal of the reflection wave into first and second signals, a linear multiplier which linearly multiplies the first and second signals branched in phase by means of the branch circuit, and a low pass filter which samples a baseband component from an output signal from the linear multiplier. A signal processor section carries out an analyzing process of an object which exists in the space based on an output from the receiver section. A control section makes a predetermined control with respect to at least one of the transmitter section and the receiver section based on an analysis result from the signal processor section.

Inventors: Teshirogi; Tasuku (Tokyo, JP), Uchino; Masaharu (Aiko-gun, JP), Saito; Sumio (Atsugi, JP), Ejima; Masanori (Kuki, JP)

Assignee: Anritsu Corporation

International Classification: G01S 13/00 (20060101); G01S 13/10 (20060101); G01S 7/292 (20060101)

Expiration Date: 5/04/12018