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1. 发明申请

US20010050596A1 Three-band switching oscillator suitable for size reduction 失效
标题翻译：三频切换振荡器适合减小尺寸
公开(公告)号：US20010050596A1
公开(公告)日：2001-12-13
申请号：US09870816
申请日：2001-05-31
申请人： Alps Electric Co., Ltd.
发明人： Kazuhiro Nakano , Hiroki Noumi , Isao Hasegawa
IPC分类号： H03B005/12 , H03B005/18 , H03J005/24 , H03J007/08
CPC分类号： H03B5/1847 , H03B5/1203 , H03B5/1231 , H03B5/1243 , H03B5/1262 , H03B2201/0208 , H03B2201/0258 , H03B2201/038
摘要： In a three-band switching oscillator, a switching circuit is provided to switch the operating conditions of first and second voltage-controlled oscillator and to switching an oscillation frequency band of said first voltage-controlled oscillator, and is composed of a first switch for supplying a current to place the first voltage-controlled oscillator into operation, a second switch for supplying a current to place the second voltage-controlled oscillator into operation, and first and second switching terminals for receiving switching voltages. The switching circuit switches the first switch in accordance with a switching voltage inputted to the first switching terminal and switches an oscillation frequency band in accordance with a switching voltage inputted to the second switching terminal, while only when a high-level switching voltage is inputted to the second switching terminal, the second switch is placed into an open condition by a high-level switching voltage inputted to the first switching terminal and placed into a closed condition by a low-level switching voltage inputted thereto, and when a low-level switching voltage is inputted to the second switching terminal, the second switch is placed into the open condition irrespective of the switching voltage inputted to the first switching terminal.
摘要翻译：在三频开关振荡器中，提供开关电路来切换第一和第二压控振荡器的工作条件，并切换所述第一压控振荡器的振荡频带，并由第一开关供给用于将第一压控振荡器置于运行状态的电流，用于提供电流以使第二压控振荡器工作的第二开关，以及用于接收开关电压的第一和第二开关端子。开关电路根据输入到第一开关端子的开关电压来切换第一开关，并且根据输入到第二开关端子的开关电压来切换振荡频带，而仅当高电平切换电压被输入到第二开关端子，第二开关被输入到第一开关端子的高电平开关电压置于开路状态，并通过输入到其的低电平开关电压置于闭合状态，并且当低电平开关电压被输入到第二开关端子，第二开关被置于打开状态，而与输入到第一开关端子的开关电压无关。

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