Original document(15 pages)  中文版
    An amplifier circuit comprising a transconductor device connected to a phase shifter section. The phase shifter section has an adjustable phase shift and an impedance at least partially dependent of the frequency of an input signal. In use, the adjustable phase shift is adjusted to have substantially the opposite value of a phase shift of the transconductor device. In an embodiment, the phase shifter section comprises a capacitor device and an adjustable resistor device which comprises an amplifier device with an input contact for receiving a resistance control signal; a first output contact connected to the capacitor devices and a second output contact connected to the transconductor device. The amplifier circuit further comprises a control device for providing said resistance control signal to the input contact of the amplifier device.
Application Number
申请号		 02829075 Application Date
申请日		 2002.06.03
Title 名称 Amplifier circuit, gyrator circuit, filter device and method for amplifying signal
Publication Number
公开号		 1628411 Publication Date
公开日		 2005.06.15
Approval Pub. Date Granted Pub. Date
International Classification 分类号 H03F1/08
Applicant(s) Name
申请人		 Ericsson Telefon AB LM
Address 地址
Inventor(s) Name 发明人
Attorney & Agent 代理人 li yafei chen jingjun

  
Variable impedance load for a variable gain radio frequency amplifier
Apparatus for automatic insertion of a base in fabrication of quartz oscillator
Device for the optoelectronic detection of switching positions of a switching element
Digital electronic circuit with low power consumption
Input stage resistant against high voltage swings
Method and device for functionally testing an analog-to-digital converter, and a corresponding analog-to-digital converter
Method and apparatus for optimizing dynamic range of a wideband analog-to-digital converter
Analog-digital conversion apparatus
Mobile electronic device having audio connector providing antenna function
A multi-band receiver
Google
Note:All patent data come from State Intellectual Property Office of the People's Republic of China. If there were discrepancies between here and the State Intellectual Property office, the later is more accurate. The patent data is only for public exchange and learning purposes. We are not responsible for the adverse consequences with unverified use of the data.