A Wideband CMOS Mixer with Feedforward Compensated Differential Transconductor

Rao, Pei-Zong; Chang, Tang-Yuan; Liang, Ching-Piau; Chung, Shyh‐Jong

doi:10.1109/iscas.2007.377889

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…also serves for input matching purposes. Without input matching active baluns, a wideband mixer with a feedforward compensated differential transconductor in CMOS 0.18-m technology was previously presented by the authors [15]. Although good linearity was achieved, neither theoretical study, nor design formula was given there.…”

Section: A Mixer Corementioning

confidence: 99%

An Ultra-Wideband High-Linearity CMOS Mixer With New Wideband Active Baluns

Rao

Chang

Liang

et al. 2009

IEEE Trans. Microwave Theory Techn.

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A 2-11-GHz high linearity CMOS down-conversion mixer with wideband active baluns using 0.18-m CMOS technology is demonstrated in this paper. The mixer employs a folded cascode Gilbert cell topology and on-chip broadband active baluns. The folded cascode approach is adopted to increase the output swing, and the linearity is enhanced by a harmonic distortion canceling technique derived from the harmonic balance analysis. The proposed configuration shows the highest IIP 3 and IP 1 dB , and exhibits more compact size than most published studies. A broadband active balun is used to generate wideband differential signals, together with the derivation of a closed-form expression for the phase imbalance. This single-ended wideband mixer has the conversion gain of 6.9 1.5 dB, input 1-dB compression point (IP 1 dB ) of 3.5 dBm, single-sideband noise figure of 15.5 dB, and third-order input intercept point (IIP 3 ) of 6.5 dBm under the power consumption of 25.7 mW from a 1.8-V power supply. The chip area is 0.85 0.57 mm 2 .

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Section: A Mixer Corementioning

confidence: 99%

An Ultra-Wideband High-Linearity CMOS Mixer With New Wideband Active Baluns

Rao

Chang

Liang

et al. 2009

IEEE Trans. Microwave Theory Techn.

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“…Capacitive cross-coupling is used for input matching at the RF stage [28]. A modified feedforward compensated differential transconductance, LC folded cascode mixer is proposed 0.18 μm CMOS technology for ultrawideband applications [29]. A differential multiple gated transistor quadrature mixer with folded structure in a 0.18 μm CMOS process is proposed for 150 kHz to 1.5 GHz frequency range [30].…”

Section: Introductionmentioning

confidence: 99%

Low‐Voltage Low Noise Figure Down‐Conversion Mixer for Band #1 of MB‐OFDM System in 180 nm Complementary Metal Oxide Semiconductor Technology

Chaturvedi

Kumar

Meena

et al. 2022

Journal of Nanomaterials

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Low-voltage design is a challenge for Gilbert cell-based mixers due to stacking transconductance and switching stage. This work addresses this issue by proposing a design of a low-voltage down-conversion mixer for band #1 of multiband orthogonal frequency division multiplexing (MB-OFDM) system in 180 nm complementary metal oxide semiconductor (CMOS) technology. The mixer is tuned at band #1 at RF frequency of 3.432 GHz and IF frequency of 264 MHz. The proposed mixer uses folded cascode connection of LO and RF in order to increase headroom and to reduce the DC supply voltage for low-voltage operation. Common gate configuration is used at RF transconductance stage to enhance the input bandwidth of the mixer. RF and LO ports are matched to 50 Ω using differential T and LC matching, respectively. The resistive source denegation technique is used to linearize transconductance with respect to the bias point. The common source stage is used at the IF port as a buffer cum matching circuit it. The simulation results of the mixer show the maximum conversion gain of 9.76 dB, 1 dB compression point (P1dB) of -16.25 dBm, the third-order input intercept point (IIP3) of -4.70 dBm, an SSB noise figure of 9.036 dB, and S11of -19.490 dB at the supply voltage of 1.2 V. Excluding off chip components, proposed mixer records an active area of 926.35 μm2.

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A 1- to 10-GHz RF and Wideband IF Cross-Coupled Gilbert Mixer in 0.13- $\mu\hbox{m}$ CMOS

Zijie

Mouthaan

2013

IEEE Trans. Circuits Syst. II

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A Wideband CMOS Mixer with Feedforward Compensated Differential Transconductor

Cited by 3 publications

References 7 publications

An Ultra-Wideband High-Linearity CMOS Mixer With New Wideband Active Baluns

An Ultra-Wideband High-Linearity CMOS Mixer With New Wideband Active Baluns

Low‐Voltage Low Noise Figure Down‐Conversion Mixer for Band #1 of MB‐OFDM System in 180 nm Complementary Metal Oxide Semiconductor Technology

A 1- to 10-GHz RF and Wideband IF Cross-Coupled Gilbert Mixer in 0.13- $\mu\hbox{m}$ CMOS

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