Ring-based multi-push voltage-controlled oscillator

Details Ring-based multi-push voltage-controlled oscillator Ring-based multi-push voltage-controlled oscillator

2011-01-25

2011-01-25

Chang, Joseph (Department: 2817)

Oscillators

Ring oscillators

C331S1070DP, C331S1070SL, C331S10800D

Reexamination Certificate

active

07876165

ABSTRACT:
A ring-based multi-push voltage-controlled oscillator (VCO) generates a multi-push output signal using a control voltage. The ring-based multi-push VCO includes a plurality of delay cells, a plurality of buffer amplifiers, and a bias unit. The delay cells connect each other in sequence to form a ring structure, and each delay cell connects with the respective buffer amplifier. The bias unit connects with the buffer amplifiers to output the multi-push output signal. The control voltage supplied to the delay cells is utilized to control the frequency of the multi-push output signal, and the ring structure formed by the delay cells is to multiply the frequency of the multi-push output signal to increase the frequency tuning range.

REFERENCES:
patent: 6297704 (2001-10-01), Nicholls et al.
patent: 2005/0258911 (2005-11-01), Higuchi et al.
Chao-Chieh Li, Chung-Chun Chen, Bo-Jr Huang, Pin-Cheng Huang, Kun-You Lin, and Huei Wang, “novel ring-based triple-push 0.2-to-34 GHz VCO in 0.13-m CMOS technology,” IEEE MTT-S International Microwave Symposium Digest, Atlanta, GA, USA, Jun. 2008.

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