A novel high-order temporal moving average filter in sampler-based discrete-time receiver

Shin, Seung Heon; Cho, Yong-Ho; Jo, Sung-Hun; Yoo, Hyung-Joun

doi:10.1109/rfit.2011.6141739

Cited by 2 publications

(4 citation statements)

References 6 publications

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“…Table I presents the theoretical, simulated, and measured gains of the proposed filter and the SMA-2 3 filter. The second column in Table I is the theoretical gain calculated by (5) in consideration of the loss by the BP-IIR filter, differential gain, and loss by the output buffer. The g m of each TA is 0.24 mS.…”

Section: B Gainmentioning

confidence: 99%

“…Therefore, the gains of these two filters are rapidly reduced [4]. A high-order filter designed using the TMA method is proposed in order to overcome these drawbacks [4,5]. The input sample weights, which are necessary for high-order MA filters, are controlled using the variable transconductance amplifier (TA) and are not related to the parallel connections of the SCs.…”

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confidence: 99%

“…The input sample weights, which are necessary for high-order MA filters, are controlled using the variable transconductance amplifier (TA) and are not related to the parallel connections of the SCs. However, the filter in [5] had an aliasing problem because the MA size was not an integer multiple of decimation size. The filter in [4] solved this problem, but the power consumption of its TA was large.…”

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confidence: 99%

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Reconfigurable High-Order Moving-Average Filter Using Inverter-Based Variable Transconductance Amplifiers

Kweon¹,

Shin²,

Jo³

et al. 2014

IEEE Trans. Circuits Syst. II

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Abstract-A charge sampler-based reconfigurable high-order moving-average (MA) filter designed using a temporal MA (TMA) method is proposed. The proposed filter has a higher gain than conventional MA filters. Moreover, the filter supports variable sizes and orders of MA. That is, the filter has a flexible frequency response by changing not only the sampling frequency but also the MA size (N) and MA order (M). The N and M are easily controlled by changing the clock patterns; therefore, the filter is suitable for multimode transceivers. To minimize the power consumption, inverter-based transconductance amplifiers are used. Here, our fabricated filter using a 65-nm CMOS technology supports MA (N=2, M=3) and MA (N=3, M=2) without changing the hardware.

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Section: B Gainmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Reconfigurable High-Order Moving-Average Filter Using Inverter-Based Variable Transconductance Amplifiers

Kweon¹,

Shin²,

Jo³

et al. 2014

IEEE Trans. Circuits Syst. II

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“…Although TMA operation reduces the chip size, thus far there has been no way to implement high-order TMA filters. Recently, a high-order TMA operation was proposed [5], but the idea was incomplete because the aliasing problem caused by the decimation was not considered. In this Letter, we propose a high-order TMA architecture that solves this problem.…”

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confidence: 99%

High-order temporal moving-average filter using a multi-transconductance amplifier

2012

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A temporal moving-average (TMA) filter that has a high-order sinctype frequency response is proposed. The proposed TMA filter has a smaller size and higher gain than conventional filters. To verify the proposed architecture, a third-order TMA filter is designed using TSMC 0.13 mm CMOS technology and is compared with a theoretical analysis. Circuit level simulations show good agreement with the theoretical analysis.Introduction: A moving-average (MA) filter that has a sinc-type frequency response is a key block showing the usefulness of the charge sampler in modern sampler-based receivers [1]. The MA filter can be categorised into two types according to their implementation methods: spatial MA (SMA) and temporal MA (TMA) [2]. To obtain the highorder sinc-type frequency response, first-order non-decimation MA filters are cascaded [3], or a high-order SMA filter is used [4]. These types of filters have a larger chip size and lower voltage gain than the TMA filter. Although TMA operation reduces the chip size, thus far there has been no way to implement high-order TMA filters. Recently, a high-order TMA operation was proposed [5], but the idea was incomplete because the aliasing problem caused by the decimation was not considered. In this Letter, we propose a high-order TMA architecture that solves this problem. The proposed high-order TMA filter has a smaller size and higher voltage gain than conventional high-order MA filters, the cascaded MA and the high-order SMA filters. To verify the proposed architecture, we designed a third-order TMA filter and compared it with a theoretical analysis.

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A novel high-order temporal moving average filter in sampler-based discrete-time receiver

Cited by 2 publications

References 6 publications

Reconfigurable High-Order Moving-Average Filter Using Inverter-Based Variable Transconductance Amplifiers

Reconfigurable High-Order Moving-Average Filter Using Inverter-Based Variable Transconductance Amplifiers

High-order temporal moving-average filter using a multi-transconductance amplifier

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