COMMUNICATION DEVICE AND IMAGING APPARATUS
First Claim
1. A communication device comprising:
- an oscillator configured to generate an oscillation signal;
a harmonic generator configured to generate a higher harmonic wave from the oscillation signal;
a first filter configured to take out a first high frequency signal from said higher harmonic wave;
a second filter configured to take out a second high frequency signal from the higher harmonic wave;
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 first intermediate frequency signal.
1 Assignment
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Accused Products
Abstract
A communication device includes an oscillator to generate an oscillation signal; a harmonic generator to generate a higher harmonic wave from the oscillation signal; a first filter to take out a first high frequency signal; a second filter to take out a second high frequency signal; a down conversion mixer to use the second high frequency signal to perform down conversion of a signal obtained by receiving a reflected signal of the first high frequency signal; a hybrid coupler to generate a first intermediate frequency signal and a second intermediate frequency signal, which are orthogonal with each other; a first mixer 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 to take out a second baseband signal by mixing an output from the down conversion mixer with the first intermediate frequency signal.
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Citations
15 Claims
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1. A communication device comprising:
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an oscillator configured to generate an oscillation signal; a harmonic generator configured to generate a higher harmonic wave from the oscillation signal; a first filter configured to take out a first high frequency signal from said higher harmonic wave; a second filter configured to take out a second high frequency signal from the higher harmonic wave; 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 first intermediate frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An imaging apparatus, comprising:
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an image sensor that includes a plurality of communication devices being arranged in an array, where each of the plurality of communication devices transmits a high frequency signal to a target and each of the plurality of communication devices receives the high frequency signal reflected on the target to give a reception signal; an A/D converter configured to convert the reception signal into a digital signal; and an image processing device configured to generate a reflected image of the high frequency signal on the target from an output from the AD converter, wherein each of the plurality of communication devices includes an oscillator configured to generate an oscillation signal, a harmonic generator configured to generate a higher harmonic wave from the oscillation signal, a first filter configured to take out the high frequency signal from the higher harmonic wave, a second filter configured to take out a local high frequency signal of a frequency different from the high frequency signal from the higher harmonic wave, a down conversion mixer configured to use the low high frequency signal to perform down conversion of the reception signal, 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. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification