Patent ID: 8723716
Filing Date: 2014-05-13
Classification: G01S

Abstract:
1. A communication device comprising: an oscillator configured to generate an oscillation signal; a harmonic generator configured to generate a higher harmonic wave having a pulse signal from the oscillation signal; a first filter configured to take out a first high frequency signal from said higher harmonic wave having the pulse signal; a second filter configured to take out a second high frequency signal from the higher harmonic wave having the pulse signal; a down conversion mixer configured to use the second high frequency signal to perform down conversion of a reception signal obtained by receiving a reflected signal of the first high frequency signal being transmitted; a hybrid coupler configured to generate a first intermediate frequency signal and a second intermediate frequency signal, which are orthogonal with each other, from the oscillation signal; a first mixer configured to take out a first baseband signal by mixing an output from the down conversion mixer with the first intermediate frequency signal; and a second mixer configured to take out a second baseband signal by mixing an output from the down conversion mixer with the second intermediate frequency signal, wherein the harmonic generator is a pulse generator.