If Filter

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Adrian G Spencer - One of the best experts on this subject based on the ideXlab platform.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    IEEE Journal of Solid-state Circuits, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-/spl mu/m CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes /spl les/1 mW and achieves image band rejection /spl ges/44 dB, input referred noise of /spl les/52.2 /spl mu/Vrms and input referred third-order intermodulation intercept of /spl ges/20 dBVp, which gives a spurious-free dynamic range of /spl ges/68.4 dB. Chip area including its tuning circuit is 0.23 mm/sup 2/.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    Custom Integrated Circuits Conference, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-μm CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 44 dB, input referred noise of 20 dBVp, which gives a spurious-free dynamic range of ≥68.4 dB. Chip area including its tuning circuit is 0.23 mm 2 .

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver mobile phone applications
    Custom Integrated Circuits Conference, 2004
    Co-Authors: Brian J Guthrie, T Sayers, Adrian G Spencer, J B Hughes
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/ZigBee transceiver is described. Implemented in a standard 0.18 /spl mu/m CMOS process, the Filter has a fIfth-order 0.5 dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 1 mW and achieves image band rejection /spl ges/33 dB, signal-to-noise ratio of /spl ges/60 dB and input referred third-order intermodulation intercept of /spl ges/17 dBVp. Chip area, including its tuning circuit, is 0.23 mm/sup 2/.

Brian J Guthrie - One of the best experts on this subject based on the ideXlab platform.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    IEEE Journal of Solid-state Circuits, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-/spl mu/m CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes /spl les/1 mW and achieves image band rejection /spl ges/44 dB, input referred noise of /spl les/52.2 /spl mu/Vrms and input referred third-order intermodulation intercept of /spl ges/20 dBVp, which gives a spurious-free dynamic range of /spl ges/68.4 dB. Chip area including its tuning circuit is 0.23 mm/sup 2/.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    Custom Integrated Circuits Conference, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-μm CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 44 dB, input referred noise of 20 dBVp, which gives a spurious-free dynamic range of ≥68.4 dB. Chip area including its tuning circuit is 0.23 mm 2 .

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver mobile phone applications
    Custom Integrated Circuits Conference, 2004
    Co-Authors: Brian J Guthrie, T Sayers, Adrian G Spencer, J B Hughes
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/ZigBee transceiver is described. Implemented in a standard 0.18 /spl mu/m CMOS process, the Filter has a fIfth-order 0.5 dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 1 mW and achieves image band rejection /spl ges/33 dB, signal-to-noise ratio of /spl ges/60 dB and input referred third-order intermodulation intercept of /spl ges/17 dBVp. Chip area, including its tuning circuit, is 0.23 mm/sup 2/.

J B Hughes - One of the best experts on this subject based on the ideXlab platform.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    IEEE Journal of Solid-state Circuits, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-/spl mu/m CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes /spl les/1 mW and achieves image band rejection /spl ges/44 dB, input referred noise of /spl les/52.2 /spl mu/Vrms and input referred third-order intermodulation intercept of /spl ges/20 dBVp, which gives a spurious-free dynamic range of /spl ges/68.4 dB. Chip area including its tuning circuit is 0.23 mm/sup 2/.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    Custom Integrated Circuits Conference, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-μm CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 44 dB, input referred noise of 20 dBVp, which gives a spurious-free dynamic range of ≥68.4 dB. Chip area including its tuning circuit is 0.23 mm 2 .

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver mobile phone applications
    Custom Integrated Circuits Conference, 2004
    Co-Authors: Brian J Guthrie, T Sayers, Adrian G Spencer, J B Hughes
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/ZigBee transceiver is described. Implemented in a standard 0.18 /spl mu/m CMOS process, the Filter has a fIfth-order 0.5 dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 1 mW and achieves image band rejection /spl ges/33 dB, signal-to-noise ratio of /spl ges/60 dB and input referred third-order intermodulation intercept of /spl ges/17 dBVp. Chip area, including its tuning circuit, is 0.23 mm/sup 2/.

T Sayers - One of the best experts on this subject based on the ideXlab platform.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    IEEE Journal of Solid-state Circuits, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-/spl mu/m CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes /spl les/1 mW and achieves image band rejection /spl ges/44 dB, input referred noise of /spl les/52.2 /spl mu/Vrms and input referred third-order intermodulation intercept of /spl ges/20 dBVp, which gives a spurious-free dynamic range of /spl ges/68.4 dB. Chip area including its tuning circuit is 0.23 mm/sup 2/.

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver
    Custom Integrated Circuits Conference, 2005
    Co-Authors: Brian J Guthrie, J B Hughes, T Sayers, Adrian G Spencer
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/Zigbee transceiver is described. Implemented in a standard 0.18-μm CMOS process, the Filter has a fIfth-order 0.5-dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 44 dB, input referred noise of 20 dBVp, which gives a spurious-free dynamic range of ≥68.4 dB. Chip area including its tuning circuit is 0.23 mm 2 .

  • a cmos gyrator low If Filter for a dual mode bluetooth zigbee transceiver mobile phone applications
    Custom Integrated Circuits Conference, 2004
    Co-Authors: Brian J Guthrie, T Sayers, Adrian G Spencer, J B Hughes
    Abstract:

    A low-If polyphase channel Filter for a dual-mode Bluetooth/ZigBee transceiver is described. Implemented in a standard 0.18 /spl mu/m CMOS process, the Filter has a fIfth-order 0.5 dB equiripple bandpass response and employs novel transconductor and preamplIfier designs. It consumes 1 mW and achieves image band rejection /spl ges/33 dB, signal-to-noise ratio of /spl ges/60 dB and input referred third-order intermodulation intercept of /spl ges/17 dBVp. Chip area, including its tuning circuit, is 0.23 mm/sup 2/.

P Russer - One of the best experts on this subject based on the ideXlab platform.

  • a broadband low noise time domain system for emi measurements through k a band up to 40 ghz
    International Symposium on Electromagnetic Compatibility, 2012
    Co-Authors: Christian Hoffmann, Stephan Braun, Ayoub Sidhom, P Russer
    Abstract:

    In this paper, a time-domain EMI measurement system for the frequency range from 10 Hz to 40 GHz is presented. Signals with a frequency of up to 1.1 GHz are sampled by an ultra-fast floating-point analog-to-digital-converter (ADC) and processed in real-time on a field-programmable-gate-array (FPGA). An ultra-broadband multi-stage down-converter allows for the measurement of signals with frequencies up to 40 GHz. Measurement times can be reduced by several orders of magnitude compared to traditional EMI-receivers that work in frequency-domain. With preselected integrated low-noise amplIfiers, the system offers high sensitivity especially in the K a -band from 26.5 GHz to 40 GHz. The low system noise figure from 26.5 GHz to 40 GHz yields an average noise floor level of around 12 dBμV using an If-Filter bandwidth of 1 MHz in this range. With a high system dynamic range of more than 70 dB, the system is excellently suited for the measurement of broadband, transient emissions or high-dynamic signals like radar pulses. Non-stationary emissions can be measured via the real-time spectrogram or via the multi-channel amplitude probability distribution (APD) measuring method.

  • a low noise time domain emi measurement system for measurements up to 26 ghz
    URSI General Assembly and Scientific Symposium, 2011
    Co-Authors: Christian Hoffmann, Alexander Boge, P Russer
    Abstract:

    In this paper, a low-noise time-domain EMI measurement system for the frequency range from 9 kHz–26 GHz is presented. It combines ultra-fast analog-to-digital-conversion and real-time digital signal processing on a field-programmable-gate-array (FPGA) with ultra-broadband multi-stage down-conversion. By using low-loss components, the system noise floor power spectral density is decreased to below −150 dBm/Hz, yielding an ultra-low noise floor of typically below −115 dBm with a 9 kHz If-Filter. The high system sensitivity allows for the characterization of broadband, low-level signals near the noise floor, like ultra-wideband (UWB) communication. Defected ground structures increase the return loss of the low insertion loss SP5T PIN-diode switches. The system If dynamic range exceeds the requirements of CISPR 16–1–1 by over 20 dB and allows for the measurement of high-dynamic range signals like radar pulses. Scan time is decreased by several orders of magnitude. A scan from 9 kHz to 26 GHz with a 9 kHz If-Filter bandwidth is completed in under 200 s, while over 5–106 frequency points are calculated.

  • a broadband high dynamic time domain system for emi measurements in k band up to 26 ghz
    International Symposium on Electromagnetic Compatibility, 2011
    Co-Authors: Christian Hoffmann, P Russer
    Abstract:

    In this work, a low-noise, high-dynamic time-domain EMI measurement system that allows for measurements from 9 kHz - 26 GHz is presented. It combines ultra-fast analog-to-digital-conversion and real-time digital signal processing on a field-programmable-gate-array (FPGA) with ultra-broadband multi-stage down-conversion. The system If dynamic range is shown to exceed the requirements of CISPR 16-1-1 by over 20 dB and allows for the measurement of high-dynamic range signals like radar pulses. The system sensitivity is increased by the use of low-loss components and integrated, broadband low-noise amplIfiers (LNA). This yields an ultra-low noise floor power spectral density of typically below -150 dBm/Hz over the complete frequency range. The high system sensitivity allows for the characterization of broadband, low-level signals near the noise floor, like ultra-wideband (UWB) communication. Scan time is decreased by several orders of magnitude compared to heterodyne EMI receivers. A scan from 9 kHz to 26 GHz with a 9 kHz If Filter and a dwell-time of 100 ms is completed in under 200 s, while over 5-106 frequency points are calculated.

  • a low noise realtime time domain emi measurement system
    International Symposium on Electromagnetic Compatibility, 2007
    Co-Authors: Stephan Braun, A Frech, P Russer
    Abstract:

    Time-domain EMI Measurement Systems allow to reduce the measurement time by several orders of magnitude. In this paper a realtime operating low-noise multiresolution timedomain EMI measurement system is presented. With a noise figure of about 7.5 dB and a high dynamic range emission measurements can be carried out close to the noise floor, while a high overload protection is available. A novel implementation of the 9 kHz If-Filter for the frequency 150 kHz to 1 GHz is presented. By this way the measurement time has been reduced by a factor of 8000 in comparison to conventional EMI Receivers. During emission measurements performed with a modelled Ifbandwidth of 9 kHz the noise floor is decreased to -19 dμV in the average detector mode.Measurements have been performed with the improved measurement system in the frequency range 30 MHz - 1 GHz.

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