Effects of LO harmonics and overlap shunting on N-phase passive mixer based receivers

Andrews, Caroline; Lee, Changhyuk; Molnar, Alyosha

doi:10.1109/esscirc.2012.6341270

Cited by 30 publications

(12 citation statements)

References 7 publications

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“…For this simplified case, the simulation of Fig. 7, neglecting layout parasitics and , and calculated (19) T-line N-path filter NF versus is plotted in Fig. 15 showing good agreement, below the T-line cut-off frequency.…”

Section: Noise Analysismentioning

confidence: 85%

“…With the N-path filter ON, as illustrated in Fig. 26, the insertion loss degrades by approximately 0.5 dB due to harmonic losses (as predicted by (19) with infinite ). The in-band insertion loss of the N-path filter ON degrades versus increasing LO frequency due to the cut-off frequency of the T-line, as illustrated in Fig.…”

Section: B Measured -Parametersmentioning

confidence: 89%

“…From the simplified model of Fig. 13(b), ignoring transmission line cut-off and other parasitic capacitance effects, the NF can be derived as (19) (Fig. 7) where is given by (5).…”

Section: Noise Analysismentioning

confidence: 99%

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Broadband Synthetic Transmission-Line N-Path Filter Design

Thomas

Larson

2015

IEEE Trans. Microwave Theory Techn.

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A synthetic transmission-line N-path bandpass filter technique that lowers the in-band insertion loss and increases the out-of-band rejection of the traditional N-path filter is analyzed. The performance limitations of the traditional N-path filter in terms of in-band insertion loss and limited rejection are reviewed. Measurement results from 0.1 to 1.6 GHz of a single-ended, four-stage synthetic transmission-line N-path filter fabricated in a 65-nm CMOS technology that achieves less than 5-dB insertion loss across the tuning range, 30-50-dB out-of-band rejection, in-band third-order distortion input-referred intercept point (IIP3) of 29 dBm, and a 11-dBm input-referred 1-dB compression point out-of-band jammer tolerance are presented.

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Section: Noise Analysismentioning

confidence: 85%

Section: B Measured -Parametersmentioning

confidence: 89%

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Broadband Synthetic Transmission-Line N-Path Filter Design

Thomas

Larson

2015

IEEE Trans. Microwave Theory Techn.

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“…2a for a sinewave voltage input can be approximated assuming RC>>T on and a virtually constant voltage on the capacitors [28- 31,39]. The difference between the sinewave input V in and the constant capacitor voltage V out is now across resistor R, and the average power dissipation can be evaluated.…”

Section: Band-reject Filter (Brf) or Notch-filtermentioning

confidence: 99%

“…Only in the last decade N-path filters with a time-continuous output regained research interest [15][16][17][18][19][20][21][22][23][24][25]. Moreover, mixer-first receivers exploiting N-path frequency translated filtering were proposed [26][27][28][29][30][31][32]. Fig.…”

Section: Band-reject Filter (Brf) or Notch-filtermentioning

confidence: 99%

N-path filters and mixer-first receivers: A review

Klumperink

Westerveld

Nauta

2017

2017 IEEE Custom Integrated Circuits Conference (CICC)

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Abstract-To realize a Software Defined Radio covering the mainstream 0.5-6 GHz wireless communication bands, new SAW-less radio receiver architectures are being explored which realize selectivity in a more flexible and programmable fashion. N-path filters and mixer-first receivers can offer high-linearity high-Q RF-filtering around a center frequency defined by a digital clock, which offers the desired flexible programmability. This paper reviews recent research on N-path filters and mixerfirst receivers, identifies advances in performance analysis, circuit performance and applications.

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Agile Blocker and Clock Jitter Tolerant Low-Power Frequency Selective Receiver with Energy Harvesting Capability

Hasan

Helaoui

Ghannouchi

2017

Sci Rep

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In this article, a novel tunable, blocker and clock jitter tolerant, low power, quadrature phase shift frequency selective (QPS-FS) receiver with energy harvesting capability is proposed. The receiver’s design embraces and integrates (i) the baseband to radio frequency (RF) impedance translation concept to improve selectivity over that of conventional homodyne receiver topologies and (ii) broadband quadrature phase shift circuitry in the RF path to remove an active multi-phase clock generation circuit in passive mixer (PM) receivers. The use of a single local oscillator clock signal with a passive clock division network improves the receiver’s robustness against clock jitter and reduces the source clock frequency by a factor of N, compared to PM receivers using N switches (N≥4). As a consequence, the frequency coverage of the QPS-FS receiver is improved by a factor of N, given a clock source of maximum frequency; and, the power consumption of the whole receiver system can eventually be reduced. The tunable QPS-FS receiver separates the wanted RF band signal from the unwanted blockers/interferers. The desired RF signal is frequency down-converted to baseband, while the undesired blocker/interferer signals are reflected by the receiver, collected and could be energy recycled using an auxiliary energy harvesting device.

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Effects of LO harmonics and overlap shunting on N-phase passive mixer based receivers

Cited by 30 publications

References 7 publications

Broadband Synthetic Transmission-Line N-Path Filter Design

Broadband Synthetic Transmission-Line N-Path Filter Design

N-path filters and mixer-first receivers: A review

Agile Blocker and Clock Jitter Tolerant Low-Power Frequency Selective Receiver with Energy Harvesting Capability

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