A 58dB SNR 6/sup th/ order broadband 10.7 MHz SC ladder filter

Silva-Martí­nez, J.; Adut, J.; Rocha-Perez, M.

doi:10.1109/cicc.2003.1249350

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…8 The quality factor Q HQ versus ambient temperature for the uncompensated and compensated cases Table 4 Comparisons of the proposed Gm-C bandpass filter and existing Gm-C approaches Performance This design Tajalli and Atarodi [9] Chung-Yu and Chung-Yun [10] Munoz et al [11] Stevenson and Edgar [12] Steyaert and Silva-Martinnez [13] Hernandez-Garduno and Silva-Martinez [3] Silva-Martinez et al [4] Hammouda [5] Quinn et al [6] Nagari and Nicollini [7] Nagari et al [8] Design techniques Technologies…”

Section: Discussionmentioning

confidence: 97%

“…Recently, attempts at possible on-chip filters have particularly been demonstrated for 10.7-MHz IF filters based on, for example, switched capacitors (SC) [3][4][5][6][7][8], and Gm-C [9][10][11][12][13] techniques. Such techniques have, however, repeatedly suffered from low quality (Q) factors from 10 to 55, high total noise from 226 to 707 lV rms and limited dynamic ranges from 58 to 68 dB.…”

Section: Introductionmentioning

confidence: 99%

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A 10.7-MHz fully balanced, high-Q, 87-dB-dynamic-range current-tunable Gm-C bandpass filter

Sa-ngiamvibool

Srisuchinwong

2008

Analog Integr Circ Sig Process

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A 10.7-MHz fully balanced, high-Q, widedynamic-range current-tunable Gm-C bandpass filter is presented. The technique is relatively simple based on two fully balanced components, i.e. an adder and a low-Qbased bandpass filter. The Q factor is approximately equal to a typically high and constant value of a common-emitter current gain (b) and is, for the first time, independent of variables such as a center frequency. Possible solutions for good stability of the Q factor with temperature are suggested. Not only can the need for additional Q-tunable circuits be greatly reduced, the sensitivity of the Q factor can be greatly improved. Sensitivities of either the Q factor or the center frequency are constant between 1 and -1 and are no longer strongly affected by the Q factor or variables. As a simple example at 10.7 MHz, the paper demonstrates the high-Q factor of 121, the low total output noise of 5.303 lV rms , the 3rd-order intermodulation-free dynamic range (IMFDR 3 ) of 74.45 dB and the wide dynamic range of 87.45 dB at 1% IM 3 . The center frequency is current tunable over three orders of magnitude. Comparisons to other 10.7-MHz Gm-C approaches are also included.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

A 10.7-MHz fully balanced, high-Q, 87-dB-dynamic-range current-tunable Gm-C bandpass filter

Sa-ngiamvibool

Srisuchinwong

2008

Analog Integr Circ Sig Process

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“…As off-chip filters are bulky and consume more power to drive external devices, the need for on-chip filters for viable fully integrated receivers has increasingly been motivated. Recently, attempts on on-chip filters have particularly been demonstrated for 10.7-MHz IF filters based on, for example, continuous-time (CT) [2][3][4][5][6] or switched capacitors (SC) [7][8][9][10][11][12] techniques. Such techniques, however, have repeatedly suffered from low quality (Q) factors (between 10 to 55), limited dynamic ranges (between 58 to 68 dB) and high total output noise (between 226 to 707 µVrms).…”

mentioning

confidence: 99%

A 10.7-MHz fully balanced, Q-of-267, 103-dB-dynamic-range current-tunable bandpass filter

Sa-ngiamvibool

Srisuchinwong

2007

2007 Asia-Pacific Conference on Communications

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A 10.7-MHz fully balanced, high-Q, wide-dynamicrange current-tunable bandpass filter is presented. The technique is relatively simple based on three fully balanced components, i.e. an adder, a low-Q-based bandpass filter and a differential amplifier. The high-Q factor is possible through a tunable bias current. As a simple example at 10.7 MHz, the paper demonstrates the high-Q factor of 267, the total low output noise of 2.089 µV rms , the 3 rd -order intermodulation-free dynamic range (IMFDR 3 ) of 82.59 dB, and the wide dynamic range of 103 dB at 1% IM 3 . The centre frequency is current tunable over 3 orders of magnitude. Comparisons to other 10.7-MHz approaches are also included.

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An overview of feed-forward design techniques for high-gain wideband operational transconductance amplifiers

Thandri

Silva-Martínez

2006

Microelectronics Journal

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A 58dB SNR 6/sup th/ order broadband 10.7 MHz SC ladder filter

Cited by 8 publications

References 6 publications

A 10.7-MHz fully balanced, high-Q, 87-dB-dynamic-range current-tunable Gm-C bandpass filter

A 10.7-MHz fully balanced, high-Q, 87-dB-dynamic-range current-tunable Gm-C bandpass filter

A 10.7-MHz fully balanced, Q-of-267, 103-dB-dynamic-range current-tunable bandpass filter

An overview of feed-forward design techniques for high-gain wideband operational transconductance amplifiers

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