JPH0336243U - - Google Patents

Info

Publication number
JPH0336243U
JPH0336243U JP9831289U JP9831289U JPH0336243U JP H0336243 U JPH0336243 U JP H0336243U JP 9831289 U JP9831289 U JP 9831289U JP 9831289 U JP9831289 U JP 9831289U JP H0336243 U JPH0336243 U JP H0336243U
Authority
JP
Japan
Prior art keywords
reception
satellite broadcast
converter
amplifier
horizontally
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9831289U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP9831289U priority Critical patent/JPH0336243U/ja
Priority to GB9008743A priority patent/GB2235340B/en
Publication of JPH0336243U publication Critical patent/JPH0336243U/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/10—Auxiliary devices for switching or interrupting
    • H01P1/15—Auxiliary devices for switching or interrupting by semiconductor devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本考案のコンバータに用いられる導
波管の一実施例構成を示す側面図、第２図は第１
図の−線断面図、第３図は、同コンバータの
一実施例構成を示すブロツク図、第４図は同コン
バータの具体構成を示す回路図、第５図は本考案
のコンバータにおいて逆バイアス印加によるアイ
ソレーシヨン効果を示す特性図、第６図は従来の
コンバータに用いられている導波管の側面図、第
７図ａ，ｂは従来のコンバータのアンプ部のブロ
ツク図である。 １……導波管、２ａ，２ｂ……プローブアンテ
ナ、ＬＮＡ……ローノイズアンプ、４，５，６…
…トランジスタ。 FIG. 1 is a side view showing the configuration of an embodiment of a waveguide used in the converter of the present invention, and FIG.
3 is a block diagram showing the configuration of an embodiment of the converter, FIG. 4 is a circuit diagram showing the specific configuration of the converter, and FIG. 5 is a reverse bias application in the converter of the present invention. FIG. 6 is a side view of a waveguide used in a conventional converter, and FIGS. 7a and 7b are block diagrams of the amplifier section of the conventional converter. 1... Waveguide, 2a, 2b... Probe antenna, LNA... Low noise amplifier, 4, 5, 6...
...transistor.

Claims (1)

【実用新案登録請求の範囲】 (1) 導波管内に、水平・垂直偏波受信用のプロ
ーブアンテナを、両者が互いに直交するように設
置し、各プローブアンテナをそれぞれアンプ入力
に接続したことを特徴とする衛星放送受信用コン
バータ。 (2) 水平・垂直偏波を受信し増幅するアンプを
、複数段の高電子移動度トランジスタ、またはＧ
ａＡｓ電界効果トランジスタにより構成すると共
に、初段のアンプは、水平・垂直偏波のそれぞれ
の入力に対応して設け、かつ、上記初段のトラン
ジスタの内、水平あるいは垂直偏波の受信を希望
しない方の電源をオフするようにしたことを特徴
とする衛星放送受信用コンバータ。 (3) 上記受信を希望しない方のトランジスタの
ゲート、ドレインに逆バイアスを印加するように
したことを特徴とする請求項２記載の衛星放送受
信用コンバータ。[Claims for Utility Model Registration] (1) Probe antennas for horizontal and vertical polarization reception are installed in a waveguide so that they are perpendicular to each other, and each probe antenna is connected to an amplifier input. A converter for satellite broadcast reception. (2) The amplifier that receives and amplifies the horizontally and vertically polarized waves is equipped with multiple stages of high electron mobility transistors or G
It is composed of aAs field effect transistors, and the first stage amplifier is provided corresponding to each input of horizontally and vertically polarized waves. A converter for satellite broadcast reception, characterized in that the power is turned off. (3) The satellite broadcast receiving converter according to claim 2, wherein a reverse bias is applied to the gate and drain of the transistor that does not desire reception.
JP9831289U 1989-08-22 1989-08-22 Pending JPH0336243U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP9831289U JPH0336243U (en) 1989-08-22 1989-08-22
GB9008743A GB2235340B (en) 1989-08-22 1990-04-18 Satellite broadcast signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9831289U JPH0336243U (en) 1989-08-22 1989-08-22

Publications (1)

Publication Number Publication Date
JPH0336243U true JPH0336243U (en) 1991-04-09

Family

ID=14216408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9831289U Pending JPH0336243U (en) 1989-08-22 1989-08-22

Country Status (2)

Country Link
JP (1) JPH0336243U (en)
GB (1) GB2235340B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002264127A (en) * 2001-03-09 2002-09-18 Toshio Ichikawa Method of continuous crystallization for molding pellet of crystallizable resin and equipment therefor

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9112907D0 (en) * 1991-06-14 1991-07-31 Cambridge Computer High isolation switch
ES2036940B1 (en) * 1991-11-05 1996-08-01 Cesel S A Ceselsa PROBE ANTENNA.
GB2289810A (en) * 1994-05-20 1995-11-29 Microelectronics Tech Inc An r.f. switch using transistors as switch and gain elements
DE19511103A1 (en) * 1995-03-25 1996-09-26 Philips Patentverwaltung Circuit arrangement for processing a first or a second high-frequency signal
US5760659A (en) * 1995-08-03 1998-06-02 Thomson Multimedia S.A. Microwave polariser
EP0757400B1 (en) * 1995-08-03 2003-10-29 THOMSON multimedia Microwave polariser
EP1251582A1 (en) * 2001-04-17 2002-10-23 Abb Research Ltd. Data transmission system
GB2432471A (en) 2005-11-01 2007-05-23 Zetex Semiconductors Plc A CMOS support IC for a DBS LNA
RU2450393C1 (en) * 2010-10-21 2012-05-10 Федеральное государственное унитарное предприятие "Научно-производственное предприятие "Исток" (ФГУП НПП "Исток") Shf switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443659A (en) * 1977-09-13 1979-04-06 Tech Res & Dev Inst Of Japan Def Agency Antenna unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453621A (en) * 1966-07-08 1969-07-01 Hughes Aircraft Co Dual mode receiving and transmitting antenna
JPS5574116U (en) * 1978-11-15 1980-05-22
DE3318197C1 (en) * 1983-05-19 1984-10-04 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Input circuitry for television receivers
FR2591407B1 (en) * 1985-12-10 1988-08-05 Loire Electronique RECEIVING DEVICE, WITH WAVEGUIDE AND SUPERHETERODYNES CIRCUITS, OF TWO HYPERFREQUENCY SIGNALS WITH POLARIZATION OF REVERSE SENSE
IT1188403B (en) * 1986-03-03 1988-01-14 Gte Telecom Spa DOUBLE POLARIZATION MICROWAVE RECEIVER FOR DIRECT RADIO DIFFUSION RECEIVED FROM SATELLITE
GB2188493A (en) * 1986-03-27 1987-09-30 Era Patents Ltd Orthogonal mode transducer
FR2608862A1 (en) * 1986-12-19 1988-06-24 Radiotechnique Ind & Comm VERY HIGH FREQUENCY ELECTRONIC SWITCH

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443659A (en) * 1977-09-13 1979-04-06 Tech Res & Dev Inst Of Japan Def Agency Antenna unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002264127A (en) * 2001-03-09 2002-09-18 Toshio Ichikawa Method of continuous crystallization for molding pellet of crystallizable resin and equipment therefor
JP4657486B2 (en) * 2001-03-09 2011-03-23 十四男 市川 Continuous crystallization method for crystalline resin pellet molding

Also Published As

Publication number Publication date
GB2235340B (en) 1994-05-11
GB9008743D0 (en) 1990-06-13
GB2235340A (en) 1991-02-27

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