| US 7,587,652 B2 | ||
| Variable power distributor, error detection method thereof, and set value correction method | ||
| Kazushi Nishizawa, Tokyo (Japan); Nobuyasu Takemura, Tokyo (Japan); Hiroaki Miyashita, Tokyo (Japan); Yoshihiko Konishi, Tokyo (Japan); Izuru Naitou, Tokyo (Japan); and Yoshihiko Imai, Tokyo (Japan) | ||
| Assigned to Mitsubishi Denki Kabushiki Kaisha, Tokyo (Japan) | ||
| Appl. No. 10/567,925 PCT Filed Mar. 26, 2004, PCT No. PCT/JP2004/004270 § 371(c)(1), (2), (4) Date Feb. 10, 2006, PCT Pub. No. WO2005/034281, PCT Pub. Date Apr. 14, 2005. |
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| Claims priority of application No. PCT/JP03/12543 (WO), filed on Sep. 30, 2000. | ||
| Prior Publication US 2006/0234869 A1, Oct. 19, 2006 | ||
| Int. Cl. G06F 11/30 (2006.01); H03M 13/00 (2006.01); G08C 25/00 (2006.01) | ||
| U.S. Cl. 714—746 [375/316] | 17 Claims |
| 1. A variable power distributor, which includes:
a set of transmission lines which are first and second transmission lines;
a two-way distributor provided on an input side of the set of transmission lines;
a 90-degree hybrid circuit provided on an output side of the set of transmission lines;
a variable phase shifter, a variable resistance attenuator, and a power amplifier provided on each line of the set of transmission
lines between the two-way distributor and the 90-degree hybrid circuit to control an amplitude and a phase of an input signal
and amplify power of the input signal;
a monitoring mechanism that monitors output signals from the 90-degree hybrid circuit; and
an error detection unit that detects an error present in each component between the first and second transmission lines based
on a monitoring output from the monitoring mechanism.
|