JPH0356230U

JPH0356230U -

Info

Publication number: JPH0356230U
Application number: JP11681489U
Authority: JP
Priority date: 1989-10-04
Filing date: 1989-10-04
Publication date: 1991-05-30

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例であるミリ波帯送
信機の構成を示した図、第２図は周波数弁別器の
感度の温度特性を示した図、第３図はこの考案の
別の一実施例の構成を示した図、第４図は従来例
のミリ波帯送信機を示した図、第５図は周波数弁
別器の特性を示した図、第６図は目標電圧の時間
変化に対する出力周波数の時間変化を示した図、
第７図は周波数弁別器の出力電圧の入力電圧に対
する変化を示した図、第８図は電圧制御型ミリ波
帯ガン発振器の出力電力の温度特性を示した図で
ある。１……電圧制御型ミリ波帯ガン発振器、２……
第一の方向性結合器、３……周波数弁別器、４…
…増幅器、５……ループフイルタ・ドライバ回路
、６……加算器、７……目標電圧発生回路、８…
…第二の方向性結合器、９……検波器、１０……
利得制御回路、１１……利得制御型増幅器である
。なお、図中同一符号は同一または相当部分を示
す。 Figure 1 shows the configuration of a millimeter wave band transmitter that is an embodiment of this invention, Figure 2 shows the temperature characteristics of the sensitivity of the frequency discriminator, and Figure 3 shows another example of this invention. A diagram showing the configuration of one embodiment, FIG. 4 is a diagram showing a conventional millimeter wave band transmitter, FIG. 5 is a diagram showing the characteristics of a frequency discriminator, and FIG. 6 is a diagram showing the time change of target voltage. A diagram showing the time change of the output frequency for
FIG. 7 is a diagram showing the change in the output voltage of the frequency discriminator with respect to the input voltage, and FIG. 8 is a diagram showing the temperature characteristics of the output power of the voltage-controlled millimeter-wave band Gunn oscillator. 1... Voltage controlled millimeter wave band Gunn oscillator, 2...
First directional coupler, 3... Frequency discriminator, 4...
...Amplifier, 5...Loop filter driver circuit, 6...Adder, 7...Target voltage generation circuit, 8...
...Second directional coupler, 9...Detector, 10...
Gain control circuit 11 is a gain control type amplifier. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A target voltage generation circuit, an adder connected to the target voltage generation circuit, a loop filter driver circuit connected to the adder, and a loop filter driver circuit connected to the target voltage generation circuit. A connected voltage-controlled millimeter-wave Gunn oscillator, a first directional coupler connected to the voltage-controlled millimeter-wave Gunn oscillator, and a second directional coupler connected to the first directional coupler. a directional coupler; a frequency discriminator connected to the second directional coupler; a gain-controlled amplifier connected to the frequency discriminator and the adder; and the second directional coupler. and a gain control circuit that is connected to the detector and the gain control amplifier and is capable of generating a gain control signal to keep the transfer function of the system constant over a wide temperature range. Features a millimeter wave band transmitter. (2) A voltage-controlled millimeter-wave Gunn oscillator, a first directional coupler connected to the voltage-controlled millimeter-wave Gunn oscillator, and a second directional coupler connected to the first directional coupler. a directional coupler; a frequency discriminator connected to the second directional coupler; an amplifier connected to the frequency discriminator; an adder connected to the amplifier; A loop filter driver circuit connected to the voltage-controlled millimeter-wave band Gunn oscillator, a detector connected to the second directional coupler, and a detector connected to the detector and the pre-adder. What is claimed is: 1. A millimeter wave band transmitter comprising: a target voltage generation circuit capable of generating a target voltage using the output power value of an oscillator to keep the output frequency modulation width constant over a wide temperature range.