Title:
多重伝送装置
Document Type and Number:
Japanese Patent JP4210022
Kind Code:
B2
Abstract:
An multiplex transmission apparatus that realizes a receiving system using a phased array antenna with high efficiency and low cost is provided. A delay controller (102) gives a time delay to a local oscillation signal outputted from a signal source (101). First and second optical transmitters (1031 and 1032) each converts the local oscillation signal and the delayed local oscillation signal into optical signals. A first optical multiplexer (104) multiplexes the optical signals for transmission. An optical separator (106) separates the multiplexed optical signal. A first multiplexer (1071) multiplexes first and second main element signals, while a second multiplexer (1072) multiplexes first and second sub-element signals. First and second optical modulators (1081 and 1082) each modulates the optical signal with multiplexed electrical signal group. A second optical multiplexer (109) multiplexes the modulated optical signals for transmission. An optical receiver (110) carries out square-low detection on the multiplexed optical signal. Then, from the optical receiver (110), the first or second main element (or sub-element) signal is obtained with its frequency converted.
Inventors:
Yu Fuse
Application Number:
JP2000195070A
Publication Date:
January 14, 2009
Filing Date:
June 28, 2000
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H01Q3/26; H04B10/07; H04B10/2507; H04B10/27; H04B10/29; H04B10/54; H04B10/548; H04J14/02
Domestic Patent References:
| JP5260019A | ||||
| JP11331089A | ||||
| JP11103288A |
Attorney, Agent or Firm:
Shiro Ogasawara