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Variable-frequency oscillator

Known as: VFO, Variable Frequency Oscillator 
A variable frequency oscillator (VFO) in electronics is an oscillator whose frequency can be tuned (i.e. varied) over some range. It is a necessary… 
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Papers overview

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2015
2015
Application of the technology systems is growing in various fields and agriculture is not an exception. Agriculture is also… 
2013
2013
This paper presents a new Current Differencing Transconductance Amplifiers (CDTA)based resistorless current-mode Quadrature… 
2012
2012
Variable-fidelity optimization (VFO) has emerged as an attractive method of performing, both, high-speed and high-fidelity… 
2008
2008
There is provided a frequency-variable oscillator that varies, even when a frequency of an input signal is varied, a frequency of… 
2007
2007
First receiver I was ever built for HF was tube receiver without RF amplification called OV2 .It was working good and enable me… 
2005
2005
There is provided a frequency tunable oscillator that has less degradation of oscillation characteristics due to a parasitic… 
2004
2004
Variable frequency coupled resonator network is a voltage controlled oscillator including a circuit comprising coupled through a… 
2003
2003
본 발명은 매우 적은 전류로 클럭을 발생시키는 가변주파수 발진기에 관한 것으로서, 차동증폭기와 인버터와 캐패시턴스를 구비하여 클럭을 발생시킴으로써, 주파수 가변을 위해 전류제어 및 전압제어 모두 가능하며, 내부 캐패시터의 일부를 외부에 설정하여 주파수 대역과 가변범위를 용이하게 변화시킬 수 있으며, 전류소모를 줄일 수 있는 것을 특징으로 한다. 
2000
2000
(57) Abstract: Depending on the capacitance between the first and second nodes of the circuit to generate a periodic output, an…