80-MHz bandpass ΔΣ modulators for multimode digital IF receivers

Salo, T.; Lindfors, S.; Hollman, T.; Jarvinen, J.A.M.; Halonen, K.

doi:10.1109/jssc.2002.808327

Cited by 47 publications

(12 citation statements)

References 12 publications

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“…Figure 9 shows the measured SNDR versus input signal power; the DRs for GSM and WCDMA applications are 76 and 68 dB, respectively. Figure 10 shows the figureof-merit (FoM) of those published papers in the past 10 years [2][3][4][11][12][13][14][15][16][17][18][19][20][21][22][23] for wide bandwidth applications. Table 2 shows the comparisons of system specifications of the proposed SDM with other references.…”

Section: Measurementsmentioning

confidence: 99%

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A low power sigma-delta modulator for dual-mode wide-band receiver

Chen

Chiang

2011

Analog Integr Circ Sig Process

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This work presents a low power cascaded sigma-delta modulator for GSM and WCDMA applications. The proposed modulator has the characteristics of wide bandwidth for WCDMA applications and low distortion in the low frequency band for GSM applications. Low-distortion and interpolative techniques are used in this modulator to enhance the performance. The low-distortion technique has not only the swing-suppressing characteristic, but it can reduce the power consumption. Moreover, the resolution can be improved even under non-linearity effects. An experimental chip is implemented in the standard 0.18-lm 1P6M CMOS technology. The measurements indicate a dynamic range of 76/68 dB and a peak signal to noise plus distortion ratio of 70/61 dB for GSM/ WCDMA applications. The core area is 1 9 1.4 mm 2 and the power consumption is 10.5/28 mW for GSM/WCDMA at 1.8 V.

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Section: Measurementsmentioning

confidence: 99%

“…The signals of different systems share the same passband of this SDM. In [4], it also used fixed sampling frequency to implement three different types band pass SDM for GSM, IS95/DECT, and WCDMA. In this work, a multi-stage architecture cascaded by a low-distortion swing-suppressing SDM [5,6] and an interpolative SDM [7] is presented.…”

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confidence: 99%

A low power sigma-delta modulator for dual-mode wide-band receiver

Chen

Chiang

2011

Analog Integr Circ Sig Process

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“…Several multi-standard RDM ICs have been reported [10][11][12][13][14][15][16][17][18][19][20][21]. Many of them are designed to operate under several cellular communication standards [10][11][12][13][14][15][16] (from GSM to UMTS), whereas only a few are used in wireless data networks [16] or in a combination of cellular and data communication standards (UMTS and WLAN in [17]).…”

Section: Review Of Related Workmentioning

confidence: 99%

“…Many of them are designed to operate under several cellular communication standards [10][11][12][13][14][15][16] (from GSM to UMTS), whereas only a few are used in wireless data networks [16] or in a combination of cellular and data communication standards (UMTS and WLAN in [17]). Except for [4,17,18], all reported designs cover the different standard requirements by only varying the applied oversampling.…”

Section: Review Of Related Workmentioning

confidence: 99%

Systematic top-down design of reconfigurable ΣΔ modulators for multi-standard transceivers

Castro-López

Morgado

Guerra

et al. 2008

Analog Integr Circ Sig Process

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“…One example of such a reconfigurable ADC, published for multi-mode application, is a bandpass sigma-delta modulator (BPSDM) based on a cascade structure (4-4 order) and a 4-bit sub-ADC [2]. The reported design here aims at DECT and CDMA mode operation.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable bandpass sigma–delta modulator with programmable NTF for low-IF multi-mode receivers

Zhang

Mikkelsen

Shen

et al. 2011

Analog Integr Circ Sig Process

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A new reconfigurable bandpass sigma-delta modulator (BPSDM) structure is proposed for low-IF multi-mode wireless systems. The proposed modulator can be reconfigured to operate in different signal bandwidths and at different signal-to-noise ratios by rearranging and optimizing the order of the noise transfer function of the loop while still maintaining stability. Compared with conventional multi-mode BPSDM, employing cascade structures and multi-bit sub-ADCs, the proposed modulator features many attractive advantages, such as (1) avoiding coefficient mismatch between analog and digital components in cascade structures, (2) avoiding DAC non-linearities that are otherwise introduced by commonly used dynamic element matching techniques, and (3) improving and varying the dynamic range performance while meeting the requirements of different wireless standards.

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80-MHz bandpass ΔΣ modulators for multimode digital IF receivers

Cited by 47 publications

References 12 publications

A low power sigma-delta modulator for dual-mode wide-band receiver

A low power sigma-delta modulator for dual-mode wide-band receiver

Systematic top-down design of reconfigurable ΣΔ modulators for multi-standard transceivers

Reconfigurable bandpass sigma–delta modulator with programmable NTF for low-IF multi-mode receivers

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