JPS6462902A - Microwave amplifier - Google Patents

Microwave amplifier

Info

Publication number
JPS6462902A
JPS6462902A JP21997987A JP21997987A JPS6462902A JP S6462902 A JPS6462902 A JP S6462902A JP 21997987 A JP21997987 A JP 21997987A JP 21997987 A JP21997987 A JP 21997987A JP S6462902 A JPS6462902 A JP S6462902A
Authority
JP
Japan
Prior art keywords
output
circuit
metallic case
width
prevented
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
JP21997987A
Other languages
Japanese (ja)
Inventor
Naoki Okamoto
Kaoru Okabe
Masao Miyazaki
Tomozo Ota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 by Sharp Corp filed Critical Sharp Corp
Priority to JP21997987A priority Critical patent/JPS6462902A/en
Publication of JPS6462902A publication Critical patent/JPS6462902A/en
Pending legal-status Critical Current

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  • Microwave Amplifiers (AREA)

Abstract

PURPOSE:To prevent recoupling from the output to the input by providing a shield metallic case shielding a waveguide fundamental transmission mode with respect to a signal band to an output circuit of at least one amplifier element in microwave amplifiers. CONSTITUTION:Matching circuits 3, 4 having amplifier elements 1, 2 are formed to the metallic case of W1 wide. The metallic case 6 in the output direction of the amplifier element 2 is reduced for the width W2 and an output matching circuit 5 is formed in the inside. Moreover, a high impedance line 12a in lambda/4 long in the power supply circuit 12 is provided and the line is folded to make the width W2 narrower. Further, the width W2 of the metallic case 6 is selected to be the size in giving the cut-off frequency of the waveguide fundamental transmission mode in the signal frequency. Thus, most power radiated from the output matching circuit 5 of the next stage is cut off and the recoupling with a first stage input matching circuit 3 due to space propagation is prevented. There is no size limit in the matching circuits 3, 4 and all circuit components are contained and the deterioration in the characteristic is prevented.
JP21997987A 1987-09-02 1987-09-02 Microwave amplifier Pending JPS6462902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21997987A JPS6462902A (en) 1987-09-02 1987-09-02 Microwave amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21997987A JPS6462902A (en) 1987-09-02 1987-09-02 Microwave amplifier

Publications (1)

Publication Number Publication Date
JPS6462902A true JPS6462902A (en) 1989-03-09

Family

ID=16744022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21997987A Pending JPS6462902A (en) 1987-09-02 1987-09-02 Microwave amplifier

Country Status (1)

Country Link
JP (1) JPS6462902A (en)

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