JPH0451687U

JPH0451687U -

Info

Publication number: JPH0451687U
Application number: JP9324890U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-30

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による受信装置の
系統図、第２図はこの考案を説明するための可変
電圧発生器及び電圧制御増幅器の特性を示す図、
第３図は従来の受信装置の系統図、第４図は従来
の受信装置による運用方法を示す図である。図中、１はモノパルスアンテナ、２，３は帯域
ろ波器、４，５は増幅器、６，７はミキサ、８は
発振器、９は無指向性アンテナ、１０は帯域ろ波
器、１１は増幅器、１２，１３，１４はスイツチ
、１５は遅延回路、１６は受信装置全体、１９，
２０は電圧制御増幅器、２１は可変電圧発生器、
２２は電圧制御増幅器、２３は可変電圧発生器で
ある。なお、図中同一又は相当部分には同一符号
を付して示してある。 FIG. 1 is a system diagram of a receiving device according to an embodiment of this invention, and FIG. 2 is a diagram showing characteristics of a variable voltage generator and a voltage control amplifier for explaining this invention.
FIG. 3 is a system diagram of a conventional receiving device, and FIG. 4 is a diagram showing an operating method using the conventional receiving device. In the figure, 1 is a monopulse antenna, 2 and 3 are bandpass filters, 4 and 5 are amplifiers, 6 and 7 are mixers, 8 is an oscillator, 9 is an omnidirectional antenna, 10 is a bandpass filter, and 11 is an amplifier , 12, 13, 14 are switches, 15 is a delay circuit, 16 is the entire receiving device, 19,
20 is a voltage control amplifier, 21 is a variable voltage generator,
22 is a voltage controlled amplifier, and 23 is a variable voltage generator. It should be noted that the same or equivalent parts in the figures are indicated by the same reference numerals.

Claims

[Scope of utility model registration request]

A monopulse antenna and an omnidirectional antenna for receiving the carrier wave transmitted by the flying object, and a bandpass filter that removes unnecessary frequencies from the sum signal/difference signal from the monopulse antenna and the signal from the omnidirectional antenna. a voltage-controlled amplifier whose amplification change characteristics with respect to the time axis have an inverse relationship with each other and which amplify the sum signal/difference signal from the monopulse antenna and the signal from the omnidirectional antenna, respectively; A variable voltage generator whose voltage change characteristics have an inverse relationship to each other and which changes the voltage of the corresponding voltage control amplifier using the launch timing of the flying object as a trigger; and a mixer which converts the carrier wave frequency to an intermediate frequency. and,
A receiving device comprising: an oscillator that generates a frequency wave having a difference between a carrier frequency and an intermediate frequency in the mixer.