A New Technique for the Design of Multi-Phase Voltage Controlled Oscillators

Sun, Jingru; Huang, Pan; Sun, Yichuang

doi:10.1142/s0218126617501134

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…Figure 1 shows the block diagram of Medical Implantable Communications Service (MICS) transceivers. Obviously, whether it is the reference clock circuit [ 6 , 11 ] or local oscillator circuit [ 3 , 4 , 12 ], the VCO is an indispensable component in sensor devices. Therefore, the characteristics of the VCO affect the performance of the sensor products [ 6 , 11 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Dual-Band Six-Phase Voltage-Control Oscillator

Wang

Chang

Tang

2018

Sensors

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The paper presents a novel dual-band six-phase voltage-control oscillator. The voltage-controlled oscillator (VCO) with a single-ended delay cell architecture has a lower power consumption, a smaller chip area, and a larger output swing than one with a differential delay cell architecture. However, the conventional even-phase outputs ring-type VCO cannot be implemented using single-ended delay cells. In other words, the VCO with single-ended delay cells meets most of the requirements of a sensor circuit system, except even-phase outputs function. This work presents a dual-band six-phase ring type VCO, which is implemented using the proposed single-ended delay cell. The proposed VCO both exhibits the advantages of single-ended delay cells and differential delay cells. The proposed delay cell has a band-switching function, which improves the jitter performance of a VCO in which it is used. The proposed VCO can be operated at 890–1080 MHz. The peak-to-peak jitter and the root mean square jitter are the 35.5 ps and 2.8 ps (at 1 GHz), respectively. The maximal power consumption is approximately 6.4 mW at a supply voltage of 1.8 V in a United Microelectronics Corporation 0.18 μm RF CMOS process. The area of the chip is 0.195 × 0.208 mm2.

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