【正文】
摘要: 高頻振動器所產(chǎn)生的高頻振動信號的功率很小,不能滿足發(fā)射機天線對發(fā)射機的功率要求,所以在發(fā)射之前需要經(jīng)過功率放大后才能獲得足夠的功率輸出。本次課程設(shè)計使通過已學的電路基礎(chǔ)知識,模擬高頻振動功率放大器,使發(fā)射機內(nèi)部各級電路之間信號功率能有效傳輸,這就要求放大器輸入端和輸出端都能實現(xiàn)阻抗匹配。即放大器輸入端阻抗和信號阻抗匹配,放大器輸出端阻抗和負載阻抗匹配。 關(guān)鍵字 : 高頻振動器 , 發(fā)射機 , 放大器 , 負載 Abstract: High frequency vibrator of highfrequency vibration signals generated by the power is small, can not meet the requirement of the transmitter antenna of the transmitter power, so before launch after power amplifier is needed to get enough power output. The curriculum design made by have learn basic knowledge of circuit, analog power amplifier, highfrequency vibration make the transmitter signal power can effective transmission between internal circuit at all levels, which requires the amplifier input and output terminal can realize the impedance matching. The amplifier input impedance and signal impedance matching, amplifier output impedance and load impedance matching. Key words: High frequency vibrator, transmitter, amplifiers, load 目 錄 前言 2 3 高頻功率放大器 3 6 搶答器電路設(shè)計 6 整體介紹 6 原理分析 7 具體分析 9 10 功率放大器輸出功率的計算分析 10 諧振回路的分析 10 放大管柵極和板極的電流電壓關(guān)系 18