JPH0262811U - - Google Patents
Info
- Publication number
- JPH0262811U JPH0262811U JP14208188U JP14208188U JPH0262811U JP H0262811 U JPH0262811 U JP H0262811U JP 14208188 U JP14208188 U JP 14208188U JP 14208188 U JP14208188 U JP 14208188U JP H0262811 U JPH0262811 U JP H0262811U
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- coaxial
- frequency amplification
- amplification element
- waveguide converter
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Microwave Amplifiers (AREA)
Description
第１図は本考案の一実施例の断面図、第２図は
従来の同軸導波管変換器の断面図である。
１…導波管部、２…結合素子、３…同軸線路部
、４…同軸線路内導体、５…同軸線路外導体、６
…高周波増幅器、７…半導体素子、８…整合回路
素子、９…１／４波長変成器。
FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional coaxial waveguide converter. DESCRIPTION OF SYMBOLS 1... Waveguide part, 2... Coupling element, 3... Coaxial line part, 4... Coaxial line inner conductor, 5... Coaxial line outer conductor, 6
...High frequency amplifier, 7...Semiconductor element, 8...Matching circuit element, 9...1/4 wavelength transformer.
Claims (1)
で増幅する低雑音増幅器に使用される同軸導波管
変換器において、前記導波管に臨んで設けた結合
素子と前記高周波増幅素子とのインターフエース
としての同軸線路部を備え、前記同軸線路部の特
性インピーダンスの値を、前記高周波増幅素子を
最小の雑音指数で作動させるインピーダンスの実
数部と、同軸線路部から前記結合素子側を見たイ
ンピーダンス５０Ωとの積の平方根の値とし、か
つその物理長を１／４波長に設定したことを特徴
とする同軸導波管変換器。 In a coaxial waveguide converter used in a low-noise amplifier that amplifies a high-frequency signal received from a waveguide with a high-frequency amplification element, an interface between a coupling element provided facing the waveguide and the high-frequency amplification element. a coaxial line section as shown in FIG. A coaxial waveguide converter characterized in that the value is the square root of the product of , and the physical length thereof is set to 1/4 wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14208188U JPH0262811U (en) | 1988-10-31 | 1988-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14208188U JPH0262811U (en) | 1988-10-31 | 1988-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0262811U true JPH0262811U (en) | 1990-05-10 |
Family
ID=31407720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14208188U Pending JPH0262811U (en) | 1988-10-31 | 1988-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0262811U (en) |
-
1988
- 1988-10-31 JP JP14208188U patent/JPH0262811U/ja active Pending