A K-Band Low-Noise and High-Gain Down-Conversion Active Mixer Using 0.18-μm CMOS Technology

Chen, Junda; Wang, Wenjun

doi:10.1007/s11277-018-6027-4

Cited by 3 publications

(6 citation statements)

References 21 publications

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“…Moreover, the inductors (L1 and L2) occupied a large chip area, particularly in the low-frequency band. Transformer coupling is widely used in radio frequency (RF) circuits [11]- [14]. Transformer coupling techniques were used on the inductors (L1-L2) to reduce the die area and increase inductance.…”

Section: Circuit Design and Analysismentioning

confidence: 99%

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A 1–18-GHz High-Gain and Low-Voltage Down-Conversion Mixer in 0.18-μm CMOS Technology

Chen,

Jian

2023

IEEE Access

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This study presents a wideband down-conversion mixer chip covering the frequency range of 1-18 GHz by TSMC 0.18-μm CMOS technology. The design of multiband mixers has attracted significant research interest. The main advantage is that it can share circuits, save chip area, and reduce power consumption and cost. The architecture implemented in this study is based on that of a double-balanced switched transconductance (SwGm) mixer. To lower the supply voltage and DC consumption, an LO CMOS series-parallel switching architecture was used in the proposed design. Transformer coupling technology was used at the node between the transconductance and local oscillator switch stages, which can effectively increase the switching current above a frequency of 10 GHz and improve the conversion gain when the power supply voltage is less than 1 V. The measured results for the proposed mixer show a power conversion gain of 10.1-15.9 dB, input third-order intercept point (IIP3) of -4--9.2 dBm, double side-band (DSB) noise figure of 10.3-14.5 dB, and RF bandwidth range of 1-18 GHz. The total DC power consumption of this mixer including the output buffer was 6.8 mW, and its core power consumption was 2.3 mW; the output buffer power consumption was 4.5 mW, and the total die size was 0.917 × 1.1 mm 2 . The mixer exhibited excellent performance characteristics, such as low power consumption, high bandwidth, and high gain.INDEX TERMS CMOS, down-conversion mixer, double side-band, transformer coupling, wideband. I. INTRODUCTIONIn recent years, the research and development of multiband, multistandard wireless communication systems has become a popular topic [1]. This research design includes a 1-18 GHZ down-conversion mixer, which covers the communication frequency range between the main wireless communication products, such as Bluetooth, UWB, WLAN, 5G, and Ku-band satellites, and the frequency band of the most popular Starlink satellites. The design of multiband mixers has received significant research interest. The main advantages of such mixers include their capability to share circuit, save chip area, and reduce power consumption and cost. This study used an active mixer design; the active mixer is based on single-balanced and double-balanced mixers as the main structures. Single-balanced active mixers have inherent flaws in their architecture. The LO signals leak into the IF output, resulting in poor LO-IF isolation, which is an inherent disadvantage of the single-balanced active-mixer

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Section: Circuit Design and Analysismentioning

confidence: 99%

“…The two coupled coils have the same self-inductance, the corresponding mutual inductance, coupling coefficient, and power conversion characteristics. The voltage and current transformation between windings in an ideal transformer are related to the turns ratio can be expressed [11,15]：…”

Section: Circuit Design and Analysismentioning

confidence: 99%

A 1–18-GHz High-Gain and Low-Voltage Down-Conversion Mixer in 0.18-μm CMOS Technology

Chen,

Jian

2023

IEEE Access

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“…Between these states, transitional definitions are required, allow collector current time-domain model to better represent the actual transistor waveform. The time-domain representation of this new fitting can be defined by tions ( 9 The Fourier coefficient for the resulting first harmonic C1 current is then repre by Equation (12) and Equation ( 13) for DC C0. Equation ( 12) defines C1k when k is no to 1; when k equals 1 Equation ( 14) should be used.…”

Section: Lo Currentsmentioning

confidence: 99%

“…Most recent literature for downconversion transistor-based mixer analysis and design are focused on CMOS, mainly using the Gilbert Cell architecture, (for example [12] at 24 GHz), though these can have poor performance at mmWave frequencies [13]. The related circuit analytical design often focuses on noise reduction techniques, with examples at 3.1 GHz [14] and 5G 27.5 GHz-43.5 GHz [15].…”

Section: Introductionmentioning

confidence: 99%

Predicting the Performance of a 26 GHz Transconductance Modulated Downconversion Mixer as a Function of LO Drive and DC Bias

Ball

2022

Electronics

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The dependency of RF performance on the local oscillator (LO) drive amplitude and DC bias is an important topic for RF mixers, especially as carrier frequency increases and generation of RF power thus becomes more complex. The prediction of mixer performance, without initial reliance on full circuit simulations, can provide important insights. In this work, mathematical models without the prior use of circuit simulation are developed, leading to a strategy to predict the conversion gain (Gc), DC current, 1 dB input compression point (IP1dB) and third order input intercept point (IIP3) for a SiGe bipolar transistor transconductance mixer. The models show the possibility to trade-off LO RF power and DC bias to achieve a desired performance. The concepts allow a prediction of the necessary DC bias required to support a chosen LO level and desired conversion transconductance or linearity. The mathematical model results, circuit simulation results, and measured hardware results from a 26 GHz prototype of a single-ended mixer are presented and compared, showing good agreement. In a lab-measured example, LO power reduction from +10 dBm to +3 dBm resulted in only a 1 dB reduction in conversion gain, by modifying the DC bias as predicted. The peak conversion gain predicted by the models is within 2.0 dB of circuit simulation and 2.5 dB of measured PCB results. The RMS error for predicted DC current, compared to circuit simulation, is 1.9 mA or better.

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“…A mixer has passive and active components and passive mixers are categorised as a single balance or double balance. Table 1 shows the advantages and disadvantages of a mixer [2–7].…”

Section: Introductionmentioning

confidence: 99%

Low‐power up‐conversion folded CMOS mixer for 2–12 GHz ultra‐wideband applications

Chen

Qian

2020

IET Microwaves, Antennas & Propagation

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A K-Band Low-Noise and High-Gain Down-Conversion Active Mixer Using 0.18-μm CMOS Technology

Cited by 3 publications

References 21 publications

A 1–18-GHz High-Gain and Low-Voltage Down-Conversion Mixer in 0.18-μm CMOS Technology

A 1–18-GHz High-Gain and Low-Voltage Down-Conversion Mixer in 0.18-μm CMOS Technology

Predicting the Performance of a 26 GHz Transconductance Modulated Downconversion Mixer as a Function of LO Drive and DC Bias

Low‐power up‐conversion folded CMOS mixer for 2–12 GHz ultra‐wideband applications

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