Efficient polyphase decomposition of comb decimation filters in Σ△ analog-to-digital converters

Aboushady, Hassan; Dumonteix, Y.; Louërat, Marie-Minerve; Mehrez, Habib

doi:10.1109/82.974776

Cited by 121 publications

(21 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nonrecursive structures [3,4] allow higher clock speed through pipelining and turned out to be of advantage in low power design as well. The transfer function for higher order CIC filters with decimation factors M = 2 m can be rewritten to Eq.…”

Section: Implementation Of Nonrecursive Cic Filtersmentioning

confidence: 99%

See 1 more Smart Citation

Multirate filter design and implementation for mixed-signal ICs

Ofner¹,

Zhang

Ley³

2015

Elektrotech. Inftech.

View full text Add to dashboard Cite

This paper describes the design of multirate filters used for the sample rate reduction of digital signals and their implementation on mixed-signal integrated circuits. Reaching target specifications of power, speed and silicon area as well as realizing multi-mode operation presents challenges. Possible solutions are discussed particularly for those filter stages which operate at the high sample rates and are illustrated in examples. Entwurf von Multiratenfiltern für gemischt analog-digitale ICs. Dieser Artikel beschreibt den Entwurf von Multiratenfiltern zur Reduktion derTaktrate digitaler Signale in gemischt analog-digitalen ICs. Die Realisierung von Systemanforderungen im Bereich der Leistungsaufnahme, der Taktrate und Siliziumfläche sowie eines MultimodeBetriebs stellt dabei eine besondere Herausforderung dar. Lösungsansätze speziell für jene Filterstufen, die mit den hohen Taktraten arbeiten, werden anhand von Beispielen beschrieben.

show abstract

Section: Implementation Of Nonrecursive Cic Filtersmentioning

confidence: 99%

“…Further options are combining the first two stages to a polyphase filter with M = M1 × M2, which is analyzed in [4].…”

Section: Implementation Of Nonrecursive Cic Filtersmentioning

confidence: 99%

Multirate filter design and implementation for mixed-signal ICs

Ofner¹,

Zhang

Ley³

2015

Elektrotech. Inftech.

View full text Add to dashboard Cite

show abstract

“…Several different architectures have been proposed [1], [10], [11], [15]. Furthermore, using general FIR filters instead of CIC filters allows an arbitrary set of filter coefficients, optimized for a suitable cost function.…”

Section: Cic Filter Ismentioning

confidence: 99%

“…The examples are based on CIC filters due to their common use in Σ∆-converters, although it is possible to implement arbitrary FIR filters using the same approach. 4 In [1], [10], [11], [15], different methods of generating partial products for given filters were investigated.…”

Section: Cic Filter Ismentioning

confidence: 99%

Integer Linear Programming-Based Bit-Level Optimization for High-Speed FIR Decimation Filter Architectures

Blad

Gustafsson

2009

Circuits Syst Signal Process

View full text Add to dashboard Cite

Analog-to-digital converters based on sigma-delta modulation have shown promising performance, with steadily increasing bandwidth. However, associated with the increasing bandwidth is an increasing modulator sampling rate, which becomes costly to decimate in the digital domain. Several architectures exist for the digital decimation filter, and among the more common and efficient are polyphase decomposed FIR filter structures.In this paper, we consider such filters implemented with partial product generation for the multiplications, and carry-save adders to merge the partial products. The focus is on the efficient pipelined reduction of the partial products, which is done using a bit-level optimization algorithm for the tree design. However, the method is not limited only to filter design, but may also be used in other applications where high-speed reduction of partial products is required.The presentation of the reduction method is carried out through a comparison between the main architectural choices for FIR filters: the direct-form and transposed direct-form structures. For the direct-form structure, usage of symmetry adders for linear-phase filters is investigated, and a new scheme utilizing partial symmetry adders is introduced. The optimization results are complemented with energy dissipation and cell area estimations for a 90nm CMOS process.

show abstract

“…The use of decimation sharpened filters embedding comb filters is addressed in [20]- [21], while in [22] authors proposed computational efficient decimation filter architectures using polyphase decomposition of comb filters. Dolecek et al proposed a novel two-stage sharpened comb decimator in [23].…”

Section: Introduction and Problem Formulationmentioning

confidence: 99%