Self-Biased and Tail Current Switching LC-VCO in CMOS Technology

Fard, Davod Matin; Charmin, Asghar; Azadbakht, Mostafa

doi:10.1109/kbei.2019.8735056

Cited by 1 publication

(2 citation statements)

References 11 publications

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“…This results in up-conversion of flicker noise which in turn increases phase noise of the VCO. 12 Also due to the presence of the second harmonic components at the common-source node, the phase noise performance is degraded significantly. 8,13 In the current reuse topology, both PMOS and NMOS switch On and Off simultaneously.…”

Section: Current Reuse Vcomentioning

confidence: 99%

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Low power ASK modulator based on direct injection‐locked current reuse VCO in 130‐nm CMOS technology for high data rate RFID applications

Yasir

Cao

2021

Circuit Theory & Apps

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A low power consumption Amplitude Shift Keying (ASK) modulator employing current reuse cross‐coupled (CRC) LC‐VCO topology and direct injection locking (IL) technique at 10.5‐GHz frequency is presented in this paper. The modulator consumes 864 μW with a DC supply of 1.2 V drawing an average current of 720 μA. The differential VCO is composed of a PMOS‐NMOS pair in stacked series cross‐coupled connection enabling current reuse which results in reduction of the average current drawn from the power source. For comparison, the ASK modulator is also realized with conventional cross‐coupled (CC) topology using NMOS pair. Both circuit approaches are carried out in GF 130‐nm CMOS technology and the post‐layout simulation results of 0.5 × 0.5 mm2 integrated circuits (ICs) show that the CRC topology consumes less power and half of the average current compared to CC topology. Owing to low power requirements, the CRC ASK modulator can be used in self‐powered active Radio Frequency Identification (RFID) tag transmitters for higher data rates.

show abstract

Section: Current Reuse Vcomentioning

confidence: 99%

“…Both M 1 and M 2 operate in saturation region and conduct current. This results in up‐conversion of flicker noise which in turn increases phase noise of the VCO 12 . Also due to the presence of the second harmonic components at the common‐source node, the phase noise performance is degraded significantly 8,13 …”

Section: System Overview and Circuit Designmentioning

confidence: 99%

Low power ASK modulator based on direct injection‐locked current reuse VCO in 130‐nm CMOS technology for high data rate RFID applications

Yasir

Cao

2021

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

Self-Biased and Tail Current Switching LC-VCO in CMOS Technology

Cited by 1 publication

References 11 publications

Low power ASK modulator based on direct injection‐locked current reuse VCO in 130‐nm CMOS technology for high data rate RFID applications

Low power ASK modulator based on direct injection‐locked current reuse VCO in 130‐nm CMOS technology for high data rate RFID applications

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