Design and optimization of CMOS switches for switched tuning of LC resonators

Christensen, K.T.

doi:10.1109/iscas.2001.922351

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…The simple layout is not usually used, since its performance is supplanted by the ones of the other two structures. Although the donut layout presents the highest performance [10] [11], its use is conditioned by its availability in the CMOS or BiCMOS integration technologies.…”

Section: Ssca Circuitmentioning

confidence: 99%

“…Taking into account the aforesaid considerations, the NMOS physical model and the corresponding equivalent circuit [12], the simplified BS model for the ON and OFF states can be represented by the two bottom circuits of Fig. 2 [5] [10]. Note that the BS ON resistance, R BS-ON , the BS OFF resistance, R BS-OFF , and the BS OFF capacitance, C BS-OFF , are highly dependent on process fabrication, layout and bias conditions.…”

Section: Ssca Circuitmentioning

confidence: 99%

“…The only two works that address some issues about the SCA theory are the ones described in [10] and [11]. So, the paucity of literature in such capacitive tuning technique has motivated this work.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance of Si-Integrated Wide-Band Single-Ended Switched Capacitor Arrays

Mendes

Vaz

Rosario

2006

2006 13th IEEE International Conference on Electronics, Circuits and Systems

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A closed-form equation for the quality factor of CMOS or BiCMOS single-ended switched capacitor arrays (SSCAs), intended for radio-frequency (RF) and microwave switched tuning resonators, is presented and analyzed. This expression predicts accurately the SSCA quality factor (Q SSCA ) with respect to the operation frequency and tuning control input. Important results arise from this equation, viz., Q SSCA shows a strong dependence on the reference cell electric parameters, presents a monotonically behavior with the tuning control input, is independent of the SSCA size (number of cells) and increases as the technology scales down. Besides that, new concepts are also introduced, namely, basic switch, reference switch, reference capacitor and reference cell. A 0.1 to 6 GHz SSCA, designed with standard 0.35 mm 2-poly 4-metal mixed-signal CMOS technology, is also described. The SSCA has a capacitive tuning range from 210 to 385 fF with a resolution capacitance of 25 fF. The theoretical results, obtained with the SSCA model, match the SSCA layout Spectre Ò RF simulation.

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Section: Ssca Circuitmentioning

confidence: 99%

Section: Ssca Circuitmentioning

confidence: 99%