Linearization of Active Downconversion Mixers at the IF Using Feedforward Cancellation

Li, Hao; Saavedra, Carlos E.

doi:10.1109/tcsi.2018.2883920

Cited by 20 publications

(2 citation statements)

References 24 publications

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“…To increase the linearity performance of the quadrature modulator, which is decisive to the overall dynamic range of the transmitter, some techniques are reported in Refs. [5][6][7][8][9][10]. Using an auxiliary PMOS FET, a derivative superposition technique was used in Ref.…”

Section: Introductionmentioning

confidence: 99%

A High-Linear Radio Frequency Quadrature Modulator with Improved Sideband Suppression and Carrier Leakage Performance

Jiang,

Yu,

et al. 2024

Tsinghua Sci. Technol.

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The quadrature modulator is a crucial block in transmitters that upconverts baseband signals to the Radio Frequency (RF) band of interest using local oscillator frequencies. In this paper, non-ideal factors that influence the performance of the quadrature modulator are considered, and solutions are accordingly taken in the quadrature modulator design. A high-linear RF quadrature modulator with improved sideband suppression and carrier leakage performance is presented in this work. The quadrature modulator implemented in the 0.18-μm SiGe process uses the current bleeding technique to improve the general performance of the doublebalanced active Gilbert mixers. An on-chip prescaler followed by two cascaded limiting amplifiers is designed to provide accurate quadrature local oscillator signals. Predrivers at quadrature baseband signal input ports are proposed to eliminate DC offsets. The measured sideband suppression achieves a performance of better than −43 dBc and carrier leakage is less than −38 dBm over the output RF frequency range of 30 MHz to 2.15 GHz.The output 1 dB compression point equals 11.4 dBm at 800 MHz.

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Section: Introductionmentioning

confidence: 99%

A High-Linear Radio Frequency Quadrature Modulator with Improved Sideband Suppression and Carrier Leakage Performance

Jiang,

Yu,

et al. 2024

Tsinghua Sci. Technol.

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“…A new approach for cost and risk assessment in the multi-objective selection of routes for the transport of hazardous materials (hazmat) on a network of city roads, The RF integrated circuits have drawn significant research attention due to the current trend toward compact, more power efficient RF front-ends, and exploitation of frequency reuse in commercial and military systems. In order to further reduce circuit size, space/volume of RF system, manufacturing cost etc, is reported in [31][32][33][34][35][36] .…”

Section: Introductionmentioning

confidence: 99%

Design of RF Receiver Front end Subsystems with Low Noise Amplifier and Active Mixer for Intelligent Transportation Systems Application

et al. 2020

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This paper presents the design, simulation, and characterization of a novel low-noise amplifier (LNA) and active mixer for intelligent transportation system applications. A low noise amplifier is the key component of RF receiver systems. Design, simulation, and characterization of LNA have been performed to obtain the optimum value of noise figure, gain and reflection coefficient. Proposed LNA achieves measured voltage gains of ~18 dB, reflection coefficients of -20 dB, and noise figures of ~2 dB at 5.9 GHz, respectively. The active mixer is a better choice for a modern receiver system over a passive mixer. Key sight advanced design system in conjunction with the electromagnetic simulation tool, has been to obtain the optimal conversion gain and noise figure of the active mixer. The lower and upper resonant frequencies of mixer have been obtained at 2.45 GHz and 5.25 GHz, respectively. The measured conversion gains at lower and upper frequencies are 12 dB and 10.2 dB, respectively. The measured noise figures at lower and upper frequencies are 5.8 dB and 6.5 dB, respectively. The measured mixer interception point at lower and upper frequencies are 3.9 dBm and 4.2 dBm.

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Improved Conversion Gain with High SFDR and Highly Linear RF Mixer Using Inductive Gate Biasing Technique for Low Power WAS and Radio LAN Applications

Avvaru

Satyanarayana

2023

Lecture Notes in Electrical Engineering

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Linearization of Active Downconversion Mixers at the IF Using Feedforward Cancellation

Cited by 20 publications

References 24 publications

A High-Linear Radio Frequency Quadrature Modulator with Improved Sideband Suppression and Carrier Leakage Performance

A High-Linear Radio Frequency Quadrature Modulator with Improved Sideband Suppression and Carrier Leakage Performance

Design of RF Receiver Front end Subsystems with Low Noise Amplifier and Active Mixer for Intelligent Transportation Systems Application

Improved Conversion Gain with High SFDR and Highly Linear RF Mixer Using Inductive Gate Biasing Technique for Low Power WAS and Radio LAN Applications

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