A 4GHz 4th-Order Passive LC Bandpass Delta-Sigma Modulator with IF at 1.4GHz

Luh, L.; Jensen, J.F.; Lin, Cheng-Min; Tsen, Chan-Tang; Le, Duc Dung; Cosand, A.E.; Thomas, Steve; Fields, C.H.

doi:10.1109/vlsic.2006.1705363

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…In that case, subsampling pipeline ADCs are the most common option although band-pass SD modulators are another alternative. Band-pass SD modulators have considerably evolved [1,2] since its conception [3]. Compared with a receiver with base band A/D conversion, a receiver with a band pass A/D converter at IF has the advantages of being free from interferences such as DC offset, flicker noise, LO leakage and allows digital I/Q demodulation.…”

Section: Introductionmentioning

confidence: 99%

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Design and implementation of a band-pass sigma delta modulator with distributed resonators

Prefasi

Hernández

Reekmans

et al. 2008

Analog Integr Circ Sig Process

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Continuous time band-pass sigma delta converters require the realization of high frequency resonators, which have been usually implemented with g (m)-C or LC circuits. However, transmission lines have been for a long time a standard way to implement high Q resonators in RF circuits. Recently, some continuous-time sigma-delta (SD) modulator architectures using transmission lines have been proposed. Theoretical analyses have shown that this kind of architectures share some of the properties of both continuous-time (CT) and discrete-time (DT) modulators. On the other hand they have specific implementation problems which are not present in other modulator architectures. This paper makes a brief review of the particularities of these modulators and shows the experimental results of a band-pass modulator implemented in BiCMOS technology. As an advantage compared to standard continuous time designs, this modulator can be operated as a subsampling ADC, displays a better immunity to clock jitter and is tolerant to loop dela

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Section: Introductionmentioning

confidence: 99%

“…6 presents the conclusions. Figure 1(a) depicts the typical resonator used in many band-pass CTSD modulators based on LC circuits [2]. It is constructed with a transconductor loaded with an LC tank.…”

Section: Introductionmentioning

confidence: 99%