Communications: directive radio wave systems and devices (e.g. – Determining distance – With frequency modulation
Reexamination Certificate
2006-12-12
2006-12-12
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
With frequency modulation
C342S027000, C342S028000, C342S118000, C342S128000, C342S130000, C342S132000, C342S147000, C342S158000, C342S175000, C342S195000, C342S196000
Reexamination Certificate
active
07148840
ABSTRACT:
A radar apparatus comprises: a transmitter unit having a high-frequency oscillating unit whose oscillation frequency is variable, and a pulse amplitude modulating unit for amplitude-modulating a pulse of a transmission high-frequency signal output from the high-frequency oscillating unit with a first control pulse signal; a receiver unit having a gating unit for controlling ON/OFF of an input of a received high-frequency signal with a second control pulse signal; and a controlling and signal processing unit for controlling the transmitter unit and the receiver unit, and for switching a first operation mode for making the apparatus function as an FM-CW radar, and a second operation mode for making the apparatus function as a pulse radar.
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Dooi Yoshikazu
Hitotsuya Masaki
Ishii Satoshi
Shima Nobukazu
Yatsuka Hiroyuki
Fujitsu Limited
Fujitsu Ten Limited
Gregory Bernarr E.
Staas & Halsey , LLP
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