KR100868730B1 - 아이솔레이션을 확보하기 위한 무선중계기 - Google Patents
아이솔레이션을 확보하기 위한 무선중계기 Download PDFInfo
- Publication number
- KR100868730B1 KR100868730B1 KR1020080020489A KR20080020489A KR100868730B1 KR 100868730 B1 KR100868730 B1 KR 100868730B1 KR 1020080020489 A KR1020080020489 A KR 1020080020489A KR 20080020489 A KR20080020489 A KR 20080020489A KR 100868730 B1 KR100868730 B1 KR 100868730B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- local oscillation
- oscillation signal
- divider
- isolation
- Prior art date
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- 238000002955 isolation Methods 0.000 title claims abstract description 31
- 230000010355 oscillation Effects 0.000 claims abstract description 67
- 238000005273 aeration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15564—Relay station antennae loop interference reduction
- H04B7/15571—Relay station antennae loop interference reduction by signal isolation, e.g. isolation by frequency or by antenna pattern, or by polarization
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
Description
Claims (2)
- 국부발진기의 출력을 제1국부발진신호와 제2국부발진신호로 2분할하는 제1디바이더와 상기 제1디바이더의 제1, 제2 국부발진신호를 각각 2분할하여 다운링크측의 다운믹서와 업믹서 그리고 업링크측의 다운믹서와 업믹서에 인가하는 제2, 제3디바이더를 포함하여 이루어진 무선중계기에 있어서, 상기 제2디바이더에서 2분할되는 제3, 제4 국부발진신호출력단은 다운링크와 업링크측의 믹서에 각각 하나씩 연결됨과 아울러 상기 제3디바이더에서 2분할되는 제5, 제6 국부발진신호출력단도 다운링크와 업링크측의 믹서에 각각 하나씩 연결되어 있는 다운 앤드 업 컨버터부를 포함하여 구성되어지는 것을 특징으로 하는 아이솔레이션을 확보하기 위한 무선중계기.
- 제1항에 있어서, 상기 제2디바이더의 제3국부발진신호출력단은 다운링크의 다운믹서에 연결되는 한편 상기 제4국부발진신호출력단은 업링크의 업믹서에 연결되고, 상기 제3디바이더의 제5 국부발진신호출력단은 다운링크의 업믹서에 연결되는 한편 상기 제6국부발진신호출력단은 업링크의 다운믹서에 연결되어 있는 다운 앤드 업 컨버터부를 포함하여 구성되어지는 것을 특징으로 하는 아이솔레이션을 확보하기 위한 무선중계기.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080020489A KR100868730B1 (ko) | 2008-03-05 | 2008-03-05 | 아이솔레이션을 확보하기 위한 무선중계기 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020080020489A KR100868730B1 (ko) | 2008-03-05 | 2008-03-05 | 아이솔레이션을 확보하기 위한 무선중계기 |
Publications (1)
Publication Number | Publication Date |
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KR100868730B1 true KR100868730B1 (ko) | 2008-11-13 |
Family
ID=40284239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020080020489A KR100868730B1 (ko) | 2008-03-05 | 2008-03-05 | 아이솔레이션을 확보하기 위한 무선중계기 |
Country Status (1)
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KR (1) | KR100868730B1 (ko) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11341098A (ja) | 1998-03-25 | 1999-12-10 | Toshiba Corp | 無線装置 |
JP2004364152A (ja) | 2003-06-06 | 2004-12-24 | Murata Mfg Co Ltd | デュアルシステム無線通信装置 |
JP2006191409A (ja) | 2005-01-07 | 2006-07-20 | Renesas Technology Corp | 送受信回路、送信回路及び受信回路 |
KR20060105103A (ko) * | 2005-04-01 | 2006-10-11 | 주식회사 지티앤티 | 적응형 무선 중계기 시스템 |
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2008
- 2008-03-05 KR KR1020080020489A patent/KR100868730B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11341098A (ja) | 1998-03-25 | 1999-12-10 | Toshiba Corp | 無線装置 |
JP2004364152A (ja) | 2003-06-06 | 2004-12-24 | Murata Mfg Co Ltd | デュアルシステム無線通信装置 |
JP2006191409A (ja) | 2005-01-07 | 2006-07-20 | Renesas Technology Corp | 送受信回路、送信回路及び受信回路 |
KR20060105103A (ko) * | 2005-04-01 | 2006-10-11 | 주식회사 지티앤티 | 적응형 무선 중계기 시스템 |
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