A 1.2V 240MHz CMOS Continuous-Time Low-Pass Filter for a UWB Radio Receiver

Saari, Ville; Kaltiokallio, Mikko; Lindfors, S.; Ryynänen, Jussi; Halonen, K.

doi:10.1109/isscc.2007.373618

Cited by 44 publications

(18 citation statements)

References 2 publications

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“…It is equal to 1.186 mV rms , corresponding to 78 nV= ffiffiffiffiffiffi Hz p noise density. The noise is integrated from 2 to 233 MHz, which is the downconverted UWB channel occupying all the subcarriers [11]. It gives a 42.7 dB dynamic range for -40 dB HD3.…”

Section: Simulation Resultsmentioning

confidence: 99%

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A 5.2 mW 240–550 MHz continuous-time low-pass filter and VGA for a UWB receiver in 0.18 μm CMOS process

Oskooei

Masoumi

Kamarei

2008

Analog Integr Circ Sig Process

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A very low-power wide-band CMOS continuous-time low-pass filter for a ultra wideband system receiver in 0.18-lm CMOS technology is proposed. The cutoff frequency of the fourth-order LPF can be tuned within 240-550 MHz. The gain of the filter is tuned about 44 dB which can omit the variable gain amplifier (VGA) block. An IIP3 of 17.4 dBm is achieved for a power consumption of 5.2 mW from a 1.8 V power supply. Merging LPF and VGA into one block can efficiently reduce the power consumption and the chip area of the analog baseband channel while achieving a high linearity.

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Section: Simulation Resultsmentioning

confidence: 99%

“…Conventionally, the combination of the two architectures is used [5,[9][10][11][12]. Figure 5 shows a fourth-order G m -C low-pass filter obtained by cascading one stage of the biquadratic schematic in Fig.…”

Section: Introductionmentioning

confidence: 99%

A 5.2 mW 240–550 MHz continuous-time low-pass filter and VGA for a UWB receiver in 0.18 μm CMOS process

Oskooei

Masoumi

Kamarei

2008

Analog Integr Circ Sig Process

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“…All the signal paths are balanced to achieve immunity against substrate noise and interferers. The front-end is targeted to co-operate with the analog baseband filter similar as the one presented in [15].…”

Section: Front-end Designmentioning

confidence: 99%

A dual-band direct-conversion RF front-end for WiMedia UWB receiver

Kaukovuori¹,

Ryynänen²,

Kaltiokallio³

et al. 2008

Analog Integr Circ Sig Process

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This paper describes a direct-conversion RF front-end designed for a dual-band WiMedia UWB receiver. The front-end operates in band group BG1 and BG3 frequencies. It includes multi-stage LNAs, down-conversion mixers, a polyphase filter for quadrature local oscillator (LO) signal generation, and LO buffers. The UWB receiver is targeted for a mobile handset, where several other radios can be simultaneously on. Therefore, special attention was paid on minimizing the interference from different wireless systems. The front-end achieves approximately 26-dB gain and 4.9-5.6-dB noise figure (NF) across three sub-bands of BG1. In BG3 mode it obtains 23-26-dB gain and 6.9-7.7-dB NF. The front-end consumes 48.1 and 42.7 mA from a 1.2-V supply voltage in BG1 and BG3 operation modes, respectively. The chip was implemented in a 0.13-lm CMOS.

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“…For wideband LPF, Gm-C LPF is often used but it is limited in linearity, dynamic range and sensitive to parasitic [5]. Previous published works of active RC LPF are often for narrow band applications, most papers show the cutoff frequency in the range of a hundred MHz are gm-C type [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

380 MHz low-power sharp-rejection active-RC LPF for IEEE 802.15.4a UWB WPAN

Phan

Farrell

Lee³

et al. 2009

2009 IEEE International Symposium on Circuits and Systems

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Abstract-This paper describes a wide-band sharp-rejection active-RC low pass filter (LPF) for pulse-based UWB IEEE 802.15.4a WPA applications. Sharp rejection is attributed to the combination of different AC characteristic of three biquads in series. A simple operational amplifier (Op-amp) is adopted to ensure high frequency performance for the designed filter. The LPF is designed in 0.13µm TSMC CMOS process. The cutoff frequency is 380MHz with about 50% of the tuning range from 300-500MHz. The rejection is 40 dB at 600 MHz. The passband ripple is less than 1.5dB and the filter consumes 4.6mA from 1.2V supply. Core chip size is 580 x 700µm 2 .

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A 1.2V 240MHz CMOS Continuous-Time Low-Pass Filter for a UWB Radio Receiver

Cited by 44 publications

References 2 publications

A 5.2 mW 240–550 MHz continuous-time low-pass filter and VGA for a UWB receiver in 0.18 μm CMOS process

A 5.2 mW 240–550 MHz continuous-time low-pass filter and VGA for a UWB receiver in 0.18 μm CMOS process

A dual-band direct-conversion RF front-end for WiMedia UWB receiver

380 MHz low-power sharp-rejection active-RC LPF for IEEE 802.15.4a UWB WPAN

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