Voltage-controlled oscillator based on TSV varactor

Abstract

The invention discloses a TSV varactor-based voltage-controlled oscillator, and the oscillator comprises a variable inductor M1, a PMOS1 source electrode S1, a substrate B1, a PMOS2 source electrode S2 and a substrate B2 which are connected to form a power supply access end; a PMOS1 drain electrode D1 is connected with a PMOS2 gate electrode G2, an M1 input end Min1, a C1 output end Cout1, a MOS3 drain electrode D3 and a MOS4 gate electrode G4; a PMOS2 drain electrode D2 is connected with a PMOS1 gate electrode G1, an M1 output end Mout1, a C2 output end Cout2, a MOS4 drain electrode D4 and a MOS3 gate electrode G3, and a MOS3 source electrode S3, a substrate B3, a MOS4 source electrode S4 and a substrate B4 are grounding ends. The input end Cin1 of the C1 and the input end Cin2 of the C2 are connected to form a capacitor control power supply access end, and the grid G5 and the substrate B5 of the MOS5 are respectively an inductance control power supply access end and a grounding end.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional integrated circuits, and relates to a voltage-controlled oscillator based on a TSV varactor. Background technique [0002] The voltage-controlled oscillator (VCO) is a key part of the phase-locked loop. The output oscillation frequency can be adjusted by controlling the voltage. The voltage-controlled oscillator plays an important role in the radio frequency circuit, especially in the phase-locked loop circuit, clock recovery Circuit and frequency synthesizer circuit is the most important. [0003] With the development of microelectronics technology, the size of microelectronic devices continues to decrease according to Moore's law, and the integration level of integrated circuits is gradually increasing. However, the characteristic size of transistors gradually reaches the physical limit, which limits the design and reliability of integrated circuits. Serious impact. [0004] The curr...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a voltage-controlled oscillator based on TSV varactor, which solves the problems of high phase noise and high energy consumption of existing voltage-controlled oscillators

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