Frequency Synthesizer
AssigneesMediatek Inc., National Taiwan University
InventorsShen-Iuan Liu, Chih-Hung Lee
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Abstract
A frequency synthesizer. The frequency synthesizer comprises a harmonic locked phase/frequency detector, a low pass filter, a voltage controlled oscillator, and a frequency divider. The harmonic locked phase/frequency detector receives a reference signal and a divided signal. The low pass filter is coupled to the harmonic locked phase/frequency detector. The voltage controlled oscillator is coupled to the low pass filter and provides an output signal. The frequency divider is coupled between the voltage controlled oscillator and the harmonic locked phase/frequency detector. Frequency of the divided signal is a harmonic frequency of the reference signal.
Claims9
An inductor configured in a radio frequency circuit, comprising:
- first, second, third and fourth divided inductors between a first terminal and a second terminal,
- wherein the first divided inductor is coupled between the first terminal and a first node, the second divided inductor is coupled between the first node and a second node which receives a bias signal, the third divided inductor is coupled between the second node and a third node, and the fourth divided inductor is coupled between the third node and the second terminal,
- wherein the first and second terminals and the first and third nodes receive different signals of the radio frequency circuit.
Dependencies are inferred from the claim text.