JPS6448525A - Transmission panel - Google Patents

Transmission panel

Info

Publication number
JPS6448525A
JPS6448525A JP20460987A JP20460987A JPS6448525A JP S6448525 A JPS6448525 A JP S6448525A JP 20460987 A JP20460987 A JP 20460987A JP 20460987 A JP20460987 A JP 20460987A JP S6448525 A JPS6448525 A JP S6448525A
Authority
JP
Japan
Prior art keywords
input signal
attenuation
amplifier system
local oscillation
local
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
JP20460987A
Other languages
Japanese (ja)
Inventor
Ryoji Matsuoka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP20460987A priority Critical patent/JPS6448525A/en
Publication of JPS6448525A publication Critical patent/JPS6448525A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the local leak at the lower level of an input signal by using 1st and 2nd attenuation means in combinations provided among an amplifier system of the input signal, a local oscillation means and a frequency converting means so as to control the leakage of a local oscillation frequency from the local oscillation means generated at the input level reduction of the microwave. CONSTITUTION:The 1st and 2nd attenuation means 30, 80 comprising an element whose impedance is changed by a bias current and varying its attenuation in response to the output level of a transmission panel 300a are provided respectively among the amplifier system of the input signal, the local oscillation means 70 and the frequency modulation means 20. If a gain reduction in each function block of the amplifier system arranged before the 1st attenuation means 30 and the input signal are reduced, the output of the local oscillation means 70 and the attenuation of the amplifier system of the input signal 1 are controlled by the same condition by means of the voltage obtained through the detection of the output. Thus, the local leak caused by the gain reduction of each function block of the amplifier system arranged before the 1st attenuation means 30 and the input signal is reduced.
JP20460987A 1987-08-18 1987-08-18 Transmission panel Pending JPS6448525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20460987A JPS6448525A (en) 1987-08-18 1987-08-18 Transmission panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20460987A JPS6448525A (en) 1987-08-18 1987-08-18 Transmission panel

Publications (1)

Publication Number Publication Date
JPS6448525A true JPS6448525A (en) 1989-02-23

Family

ID=16493301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20460987A Pending JPS6448525A (en) 1987-08-18 1987-08-18 Transmission panel

Country Status (1)

Country Link
JP (1) JPS6448525A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02295257A (en) * 1989-05-09 1990-12-06 Nec Corp Transmitter
JPH05218885A (en) * 1992-01-31 1993-08-27 Nec Corp Transmitting power controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02295257A (en) * 1989-05-09 1990-12-06 Nec Corp Transmitter
JPH05218885A (en) * 1992-01-31 1993-08-27 Nec Corp Transmitting power controller

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