Design of active RLC integrated filters with application in the GHz range

Pipilos, S.; Tsividis, Y.

doi:10.1109/iscas.1994.409455

Cited by 25 publications

(3 citation statements)

References 7 publications

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“…The typical method to find the power spectrum is to use high-pass or bandpass filters followed by a rectifier or a squarer circuit [7]- [9]. For signals in the gigahertz range, the excess phase problem prevents the attempts of using traditional -or OTA-C CMOS filter to realize bandpass filter [11]; an alternative method is to use active inductor or gyrator to simulate passive RLC circuits [12], [13]. The main drawbacks are their small linear input range and high power consumption.…”

Section: Introductionmentioning

confidence: 99%

A Digital Power Spectrum Estimation Method for the Adaptation of High-Speed Equalizers

Lin

Liu

2004

IEEE Trans. Circuits Syst. I

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This paper presents a new method to estimate the power spectrum of digital signals, which is then used to generate an error signal to tune Gbps data rate equalizers for digital communications. The proposed power spectrum estimation method can be realized with standard digital circuits and has been fabricated and tested in 0.35-m CMOS technology for 1-Gbps data rate. Compared with the traditional bandpass filter followed by a rectifier implementation, this method has wider input signal range and is scalable to higher speed technologies beyond the gigahretz range, in addition to largely reduced power dissipation and die area. Also presented are system simulations on the bit-error rate performance and the error space analysis of the proposed method in comparison with the method of using a bandpass filter followed by a rectifier.

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Section: Introductionmentioning

confidence: 99%

A Digital Power Spectrum Estimation Method for the Adaptation of High-Speed Equalizers

Lin

Liu

2004

IEEE Trans. Circuits Syst. I

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“…Transconductor-C filters are fast but have poor dynamic range when designed for gigahertz frequencies. There has been great interest in building LC bandpass filters using monolithic inductors on silicon [1]- [3]. LC filters can be used as image reject filters at the front end of a wireless transceiver [4] or as inside sigma-delta modulator loops for gigahertz bandpass analog-to-digital conversion [5].…”

Section: Introductionmentioning

confidence: 99%

A linear integrated LC bandpass filter with Q-enhancement

Gao

Snelgrove

1998

IEEE Trans. Circuits Syst. II

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A technique is proposed in this paper for linearizing active Q-enhanced monolithic LC filters. This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the need for linear operating range and the low supply voltage. A linear Q-enhanced LC filter using the proposed technique has been implemented in a 0.5-m bipolar process. The demonstrated filter chip operates at a center frequency around 1 GHz with the quality factor tunable up to 400 without spurious oscillation. For a Q of 40, the input intercept point and spurious-free dynamic range are 06.67 dBm and 36 dB, respectively, at a power consumption of 68 mW and with 7 dB of gain.

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“…The shortcomings of passive monolithic inductors are well known as larger required area and low inductor quality factor (Q) due to resistive loss and capacitive coupling to the substrate. A negative resistor generated by a positive feedback configuration is usually used to compensate for the inductor low-Q characteristic [4], [5].…”

Section: Introductionmentioning

confidence: 99%

A 900 MHz active CMOS LNA with a bandpass filter

Chang

Choma²,

Wills³

1999 Southwest Symposium on Mixed-Signal Design (Cat. No.99EX286)

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A new active CMOS LNA with bandpass filtering is proposed. A NCG Q-enhancement technique is utilized to extend Q tuning range. By employing standard 0.5pm CMOS technology, center frequencies can be tuned between 559MHz to 970MHz with Q larger than 400. A LNA is designed and simulated for NADC and AMPS wireless standards to achieve a center frequency at 881MHz with Q=34, 15.7dB voltage gain, -12.4dBm IIP3,6dB NF, and 52.5mW power dissipation.

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Design of active RLC integrated filters with application in the GHz range

Cited by 25 publications

References 7 publications

A Digital Power Spectrum Estimation Method for the Adaptation of High-Speed Equalizers

A Digital Power Spectrum Estimation Method for the Adaptation of High-Speed Equalizers

A linear integrated LC bandpass filter with Q-enhancement

A 900 MHz active CMOS LNA with a bandpass filter

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