WO2004102728A1 - 超伝導受信機システム - Google Patents
超伝導受信機システム Download PDFInfo
- Publication number
- WO2004102728A1 WO2004102728A1 PCT/JP2004/007115 JP2004007115W WO2004102728A1 WO 2004102728 A1 WO2004102728 A1 WO 2004102728A1 JP 2004007115 W JP2004007115 W JP 2004007115W WO 2004102728 A1 WO2004102728 A1 WO 2004102728A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiver
- superconducting
- image
- receiver system
- sideband
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- H04B1/28—Circuits for superheterodyne receivers the receiver comprising at least one semiconductor device having three or more electrodes
Definitions
- the present invention relates to a superconducting receiver system, and more particularly to a superconducting (SIS) receiver system using a waveguide type band stop filter.
- SIS superconducting
- the magnitude of the sideband ratio is the key to achieving stable and accurate observations.
- a superconducting mixer which is a double sideband (DSB) receiver, as a single sideband (SSB) receiver
- DSB double sideband
- SSB single sideband
- Patent Literature 1 Japanese Patent Application Laid-Open No. 2003-57072 74 (page 3-5, FIG. 1) Disclosure of the Invention
- the side band ratio is up to Only about 20 dB was achieved.
- a superconducting mixer in view of the above situation, can be formed into a single side band (SSB) with a simple configuration by applying a filter on the image side with a waveguide type filter, and the side band ratio is increased.
- SSB single side band
- a superconducting SIS mixer which is a rain sideband (DSB) receiver
- SSB single sideband
- a waveguide band stop filter is disposed between the cross guide force bracket connected to the electromagnetic horn and the superconducting SIS mixer, and the filter is disposed on the image side with the waveguide band stop filter. The feature is to remove noise and interference from the image band.
- FIG. 1 is a block diagram of a superconducting receiver system showing an embodiment of the present invention.
- FIG. 2 is a photograph as a substitute drawing showing a main part configuration of a superconducting receiver system showing an embodiment of the present invention.
- FIG. 3 is a characteristic diagram of a waveguide band stop filter of a superconducting receiver system showing an embodiment of the present invention.
- FIG. 4 is a diagram showing a result of observation of torque by a waveguide band rejection filter of the superconducting receiver system of the present invention.
- FIG. 1 is a block diagram of a superconducting receiver system showing an embodiment of the present invention
- FIG. 2 is a photograph showing a main part configuration of the superconducting receiver system showing an embodiment of the present invention (substitute drawing). It is.
- Fig. 1 is a dewar (4K cryo-slot), 2 and 6 are CGCs (cross-guide couplers), 2A is a waveguide band rejection filter, and 3 is a superconducting (SIS) mixer for measurement.
- 4, 9 are HEMT amplifiers, 5 and 7 are electromagnetic horns, 8 is a superconducting (SIS) mixer for power output calibration (with back short), 1 is a temperature calibration device, 1 is a rotating mirror, and 1 is a rotating mirror.
- the superconducting SIS mixer 3 which is a double sideband (DSB) receiver, can be used as a single sideband (SSB) receiver.
- a waveguide type band stop filter 1A is disposed, and the image side is filtered by the waveguide type band stop filter 2A, so that the image band is suppressed. Noise and interference were removed.
- FIG. 3 is a characteristic diagram of a waveguide band rejection filter of a superconducting receiver system showing an embodiment of the present invention, in which the horizontal axis represents frequency (GHz) and the vertical axis represents transmission gain (dB). I have.
- a is a characteristic diagram of the present invention to which a waveguide band type band rejection filter is applied
- b is a diagram showing a simulation result.
- the waveguide band rejection filter can be manufactured with good simulation reproducibility.
- FIG. 4 is a diagram showing the results of observation of the ozone spectrum of the superconducting receiver system of the present invention by the waveguide band rejection filter.
- the horizontal axis is the frequency CMHz], and the vertical axis is the temperature T [K ] Is shown.
- ⁇ indicates the observation results in both sidebands (DSB), and b indicates the single-sided band (SSB).
- the frequency of the first antenna is about 103 GHz
- the first intermediate frequency (IF) is about 7 GHz
- USB upper side band is about 11 0 GHz
- LSB Lower (low) sideband is about 96 GHz, See BSF characteristics].
- the frequency of the first 0 (local oscillator) is about 106 GHz, and the first intermediate frequency (IF) is about 4 GHz (USB: Upper sideband is about 110 GHz. LSB: The lower sideband is about 10 GHz, see BSF characteristics in Fig. 3).
- the sideband ratio was only about ⁇ 20 dB because of the use of phase difference and the like.
- the band rejection can be set to 150 dB or more, so that the achieved side band ratio can be set to 50 dB or more.
- a superconducting SIS mixer which is a double sideband (DSB) receiver, is used in an electromagnetic horn in order to be used as a single sideband (SSB) receiver.
- a waveguide band stop filter is arranged between the cross guide coupler to be connected and the superconducting SIS mixer, and the image band is filtered by the waveguide band stop filter. Interference can be eliminated. In particular, it is possible to significantly increase the sideband ratio (up to the rejection of the filter) from the conventional method of 20 dB.
- the superconducting receiver system of the present invention can be used as a sideband mixer receiver in a millimeter-wave submillimeter-wave region.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Waveguide Aerials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003140773A JP4232533B2 (ja) | 2003-05-19 | 2003-05-19 | 超伝導受信機システム |
JP2003-140773 | 2003-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004102728A1 true WO2004102728A1 (ja) | 2004-11-25 |
Family
ID=33447414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007115 WO2004102728A1 (ja) | 2003-05-19 | 2004-05-19 | 超伝導受信機システム |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4232533B2 (ja) |
WO (1) | WO2004102728A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9397378B2 (en) | 2013-02-19 | 2016-07-19 | Osaka Prefecture University Public Corporation | Waveguide-type image rejection filter and single-sideband receiver, frequency divider, and sideband-separating receiver using the same filter |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60212038A (ja) * | 1984-04-05 | 1985-10-24 | Fujitsu Ten Ltd | 受信機 |
JPH04354282A (ja) * | 1991-05-31 | 1992-12-08 | Matsushita Electric Ind Co Ltd | Afc回路 |
JPH07202743A (ja) * | 1993-12-29 | 1995-08-04 | Matsushita Electric Ind Co Ltd | 周波数変換装置 |
JP2002246921A (ja) * | 2000-12-13 | 2002-08-30 | Fujitsu Quantum Devices Ltd | 送信装置、受信装置、無線通信システム及び無線通信方法 |
JP2003057274A (ja) * | 2001-08-20 | 2003-02-26 | Japan Science & Technology Corp | コムジェネレータを用いた超伝導ミクサのサイドバンド比の測定方法及びその装置 |
-
2003
- 2003-05-19 JP JP2003140773A patent/JP4232533B2/ja not_active Expired - Fee Related
-
2004
- 2004-05-19 WO PCT/JP2004/007115 patent/WO2004102728A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60212038A (ja) * | 1984-04-05 | 1985-10-24 | Fujitsu Ten Ltd | 受信機 |
JPH04354282A (ja) * | 1991-05-31 | 1992-12-08 | Matsushita Electric Ind Co Ltd | Afc回路 |
JPH07202743A (ja) * | 1993-12-29 | 1995-08-04 | Matsushita Electric Ind Co Ltd | 周波数変換装置 |
JP2002246921A (ja) * | 2000-12-13 | 2002-08-30 | Fujitsu Quantum Devices Ltd | 送信装置、受信装置、無線通信システム及び無線通信方法 |
JP2003057274A (ja) * | 2001-08-20 | 2003-02-26 | Japan Science & Technology Corp | コムジェネレータを用いた超伝導ミクサのサイドバンド比の測定方法及びその装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4232533B2 (ja) | 2009-03-04 |
JP2004343654A (ja) | 2004-12-02 |
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