JPH0153921B2 - - Google Patents
Info
- Publication number
- JPH0153921B2 JPH0153921B2 JP10438483A JP10438483A JPH0153921B2 JP H0153921 B2 JPH0153921 B2 JP H0153921B2 JP 10438483 A JP10438483 A JP 10438483A JP 10438483 A JP10438483 A JP 10438483A JP H0153921 B2 JPH0153921 B2 JP H0153921B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- signal
- output
- input
- phase
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
Landscapes
- Waveguide Connection Structure (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
【発明の詳細な説明】
本発明は、マイクロ波通信に用いる反射型ゲイ
ンイコライザーに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reflection type gain equalizer used in microwave communication.
従来、ゲインイコライザーとしては減衰型イコ
ライザーがあり、これは例えば第１図に示すよう
に周波数fLからfHまでの帯域において、高周波側
の減衰量が少なくなるような一定の減衰量特性を
有するものであり、これにより帯域内の利得を変
えるようにしていた。 Conventionally, as a gain equalizer, there is an attenuation type equalizer, which has a constant attenuation characteristic such that the amount of attenuation on the high frequency side is small in the band from frequency f L to f H , as shown in Figure 1. This was used to change the gain within the band.
しかしながら従来の減衰型イコライザーは固定
形のものが多く、その減衰量特性を大きな可変範
囲をもち、かつ連続可変のものとすることは困難
であつた。 However, many conventional attenuation type equalizers are of a fixed type, and it is difficult to make the attenuation characteristics have a large variable range and be continuously variable.
この発明は上記のような従来のものの欠点を除
去するためになされたもので、3dB方向性結合器
の位相0゜の出力端に全反射終端器を接続し、上記
方向性結合器の位相90゜の出力端に可変長線路お
よびその他端に全反射終端器を接続することによ
り、帯域内利得の傾きを可変にできる反射型ゲイ
ンイコライザーを提供することを目的としてい
る。 This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and a total internal reflection terminator is connected to the output end of the 3 dB directional coupler with a phase of 90°. The object of the present invention is to provide a reflection type gain equalizer in which the inclination of the in-band gain can be made variable by connecting a variable length line to the output end of the device and a total internal reflection terminator to the other end.
以下、この発明の一実施例を図について説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第２図はこの発明の一実施例を示し、図におい
て、３はマイクロ波帯の3dB方向性結合器であ
り、該マイクロ波帯の3dB方向性結合器の１つの
端子を入力端子として信号を入力したときに信号
が出力される２つの端子間で相対的に信号が進ん
でいる端子を位相0゜の出力端子、90゜遅れている
端子を位相90゜の出力端子、信号が出力されない
端子をアイソレーシヨン端子とするとき、本ゲイ
ンイコライザーの入力端１と上記方向性結合器３
の入力端子との間には入力信号と順方向となるよ
うにアイソレータ２ａが挿入接続されており、上
記方向性結合器２の位相0゜の出力端子には全反射
形終端器４が接続されており、上記方向性結合器
３の位相90゜の出力端子には可変長線路５が接続
されており、該可変長線路５の他端には全反射終
端器６が接続されている。また上記方向性結合器
３のアイソレーシヨン端子と本ゲインイコライザ
ーの出力端７との間にはアイソレータ２ｂが出力
信号と順方向となるように挿入接続されており、
該両アイソレータ２ａ，２ｂは無用の反射を除く
ため、即ち、入出力回路とのインピーダンス整合
を目的として設けたものである。 FIG. 2 shows an embodiment of the present invention. In the figure, 3 is a microwave band 3 dB directional coupler, and one terminal of the microwave band 3 dB directional coupler is used as an input terminal to input a signal. The terminal where the signal is relatively leading between the two terminals where the signal is output when input is the output terminal with a phase of 0°, the terminal where the signal is delayed by 90° is the output terminal with the phase of 90°, and the terminal where the signal is not output. is the isolation terminal, the input terminal 1 of this gain equalizer and the above directional coupler 3
An isolator 2a is inserted and connected between the input terminal of the directional coupler 2 and the input signal in the forward direction, and a total internal reflection type terminator 4 is connected to the 0° phase output terminal of the directional coupler 2. A variable length line 5 is connected to the 90° phase output terminal of the directional coupler 3, and a total reflection terminator 6 is connected to the other end of the variable length line 5. Further, an isolator 2b is inserted and connected between the isolation terminal of the directional coupler 3 and the output terminal 7 of the gain equalizer so as to be in the forward direction of the output signal,
Both isolators 2a and 2b are provided for the purpose of eliminating unnecessary reflections, that is, for the purpose of impedance matching with the input/output circuit.
次に作用について説明する。 Next, the effect will be explained.
第２図に示した可変長線路５の長さを変えると
電気jxが変わり、これによつて本実施例イコライ
ザーの減衰曲線は第３図に示す減衰曲線１０から
減衰曲線１１，１２へと、周波数軸上を動いてい
く。その結果、例えば本実施例イコライザーの通
過帯域を通過帯域９とすれば、上記可変長線路５
の長さを手動で微調整することにより、帯域の減
衰特性を減衰曲線１０の一部の曲線１０ａから減
衰曲線１１の一部の曲線１１ａに変えることがで
き、この場合両曲線１０ａ，１１ａの傾きは異な
るものとなつており、このように上記可変長線路
５の長さを変えることによりマイクロ波帯域内の
利得特性の傾きを可変とすることができる。 When the length of the variable length line 5 shown in FIG. 2 is changed, the electric jx changes, thereby changing the attenuation curve of the equalizer of this embodiment from the attenuation curve 10 shown in FIG. 3 to the attenuation curves 11 and 12 shown in FIG. It moves on the frequency axis. As a result, for example, if the passband of the equalizer of this embodiment is set to passband 9, then the variable length line 5
By manually fine-tuning the length of the band, the attenuation characteristic of the band can be changed from the curve 10a, which is a part of the attenuation curve 10, to the curve 11a, which is a part of the attenuation curve 11. In this case, both curves 10a and 11a are The slopes are different, and by changing the length of the variable length line 5 in this way, the slope of the gain characteristic within the microwave band can be made variable.
なお、例えば通過帯域が通過帯域１３である場
合においても、上記実施例と同様にして帯域内利
得の傾きを可変にできることは当然である。 Note that, for example, even when the pass band is the pass band 13, it is natural that the slope of the in-band gain can be made variable in the same manner as in the above embodiment.
以上のように、この発明によれば、3dB方向性
結合器の位相0゜の出力端に全反射終端器を接続
し、位相90゜の出力端に可変長線路と全反射終端
器を接続して反射型ゲインイコライザーを構成し
たので、簡単に減衰量の周波数特性を連続的に可
変とすることができる効果がある。 As described above, according to the present invention, a total internal reflection terminator is connected to the 0° phase output end of the 3 dB directional coupler, and a variable length line and a total internal reflection terminator are connected to the 90° phase output end. Since the reflection type gain equalizer is constructed using the above, there is an effect that the frequency characteristics of the attenuation amount can be easily varied continuously.
第１図は従来型の減衰型イコライザーの減衰量
特性図、第２図はこの発明の一実施例による反射
型ゲインイコライザーの構成図、第３図はその減
衰量特性を可変とできる理由を説明するための図
である。
３……3dB方向性結合器、４，６……全反射終
端器、５……可変長線路、２ａ……アイソレー
タ。１……入力端。なお図中、同一符号は同一又
は相当部分を示す。
Fig. 1 is a diagram of the attenuation characteristics of a conventional attenuation type equalizer, Fig. 2 is a configuration diagram of a reflection type gain equalizer according to an embodiment of the present invention, and Fig. 3 explains the reason why the attenuation characteristics can be made variable. This is a diagram for 3... 3dB directional coupler, 4, 6... Total internal reflection terminator, 5... Variable length line, 2a... Isolator. 1...Input end. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
子を入力端子として信号を入力したときに信号が
出力される２つの端子間で相対的に信号が進んで
いる端子を位相0゜の出力端子、90゜遅れている端
子を位相90゜の出力端子、信号が出力されない端
子をアイソレーシヨン端子とするとき、 上記方向性結合器の入力端子と本ゲインイコラ
イザーの入力端との間に入力信号と順方向となる
ように挿入されたアイソレータと、 上記位相0゜の出力端子に接続された全反射形終
端器と、 上記位相90゜の出力端子に接続された可変長線
路と、 該可変長線路の他端に接続された全反射終端器
とを備え、 上記可変長線路の長さを変えることにより上記
アイソレーシヨン端子に出力される信号の帯域内
振幅特性の傾きを可変としたことを特徴とする反
射形ゲインイコライザー。[Claims] 1. A 3 dB directional coupler in the microwave band, and two terminals from which a signal is output when a signal is input using one terminal of the 3 dB directional coupler in the microwave band as an input terminal. When the terminal whose signal is relatively leading between them is the output terminal with a phase of 0°, the terminal with a lag of 90° is the output terminal with a phase of 90°, and the terminal where no signal is output is the isolation terminal. an isolator inserted between the input terminal of the coupler and the input terminal of this gain equalizer so as to be in the forward direction of the input signal; a total internal reflection terminator connected to the output terminal of the above 0° phase; A variable length line connected to an output terminal with a phase of 90°, and a total reflection terminator connected to the other end of the variable length line, and the isolation terminal can be adjusted by changing the length of the variable length line. A reflection type gain equalizer characterized in that the slope of the in-band amplitude characteristic of the signal output to the signal is variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10438483A JPS59229901A (en) | 1983-06-10 | 1983-06-10 | Reflective gain equalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10438483A JPS59229901A (en) | 1983-06-10 | 1983-06-10 | Reflective gain equalizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59229901A JPS59229901A (en) | 1984-12-24 |
| JPH0153921B2 true JPH0153921B2 (en) | 1989-11-16 |
Family
ID=14379259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10438483A Granted JPS59229901A (en) | 1983-06-10 | 1983-06-10 | Reflective gain equalizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59229901A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2666947A1 (en) * | 1990-09-18 | 1992-03-20 | Trt Telecom Radio Electr | SPECTRUM EQUALIZATION DEVICE. |
-
1983
- 1983-06-10 JP JP10438483A patent/JPS59229901A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59229901A (en) | 1984-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5473295A (en) | Saw notch filter for improving stop-band attenuation of a duplex filter | |
| US4074214A (en) | Microwave filter | |
| US4216448A (en) | Microwave distributed-constant band-pass filter comprising projections adjacent on capacitively coupled resonator rods to open ends thereof | |
| US3967220A (en) | Variable delay equalizer | |
| US5077545A (en) | Surface acoustic wave waveguide-coupled resonator notch filter | |
| US3484724A (en) | Transmission line quadrature coupler | |
| JPS6327483Y2 (en) | ||
| JPS6243601B2 (en) | ||
| US3289113A (en) | Non-reciprocal attenuation equalization network using circulator having plural mismatched ports between input and output port | |
| US4013981A (en) | Constant-resistance coupled-line type equalizer | |
| JP2579476B2 (en) | Composite filter | |
| US4475092A (en) | Absorptive resonant cavity filter | |
| US5194834A (en) | Apparatus for a matched and adjustable microwave frequency selective attenuator unit | |
| JPS62243Y2 (en) | ||
| JPS59229901A (en) | Reflective gain equalizer | |
| US3495190A (en) | Microwave phase equalization network | |
| JPH039363Y2 (en) | ||
| US3382465A (en) | Equalizers comprising interconnected directional couplers | |
| JPS6216567B2 (en) | ||
| JPS62242Y2 (en) | ||
| CN220234636U (en) | Amplitude equalizer with slope selection function | |
| JPH026642Y2 (en) | ||
| JPS6117401B2 (en) | ||
| SU1171878A1 (en) | Band-pass filter | |
| JPH0918203A (en) | Polar band pass filter |