The design of image rejection mixer in W-band

Gong, Jiaxin; Lei, Mengya; Wang, Yuzhu; Li, Yawei

doi:10.1109/icept.2015.7236536

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…The selected resistive mixer exhibited low flicker noise and current consumption. Furthermore, its circuit structure was a simple circuit, as no drain bias is required by the HEMTs presented in the resistive mixer [18][19][20][21]. In the designed W-band IRM, the RF signal is decomposed by the RF Lange coupler into two 90-degree out-of-phase signals, which were simultaneously converted into two IF signals by a pair of resistive mixers that used in-phase LO signals inputted by the Wilkinson coupler.…”

Section: Image-rejection Mixermentioning

confidence: 99%

W‐Band MMIC chipset in 0.1‐μm mHEMT technology

et al. 2020

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We developed a 0.1‐μm metamorphic high electron mobility transistor and fabricated a W‐band monolithic microwave integrated circuit chipset with our in‐house technology to verify the performance and usability of the developed technology. The DC characteristics were a drain current density of 747 mA/mm and a maximum transconductance of 1.354 S/mm; the RF characteristics were a cutoff frequency of 210 GHz and a maximum oscillation frequency of 252 GHz. A frequency multiplier was developed to increase the frequency of the input signal. The fabricated multiplier showed high output values (more than 0 dBm) in the 94 GHz–108 GHz band and achieved excellent spurious suppression. A low‐noise amplifier (LNA) with a four‐stage single‐ended architecture using a common‐source stage was also developed. This LNA achieved a gain of 20 dB in a band between 83 GHz and 110 GHz and a noise figure lower than 3.8 dB with a frequency of 94 GHz. A W‐band image‐rejection mixer (IRM) with an external off‐chip coupler was also designed. The IRM provided a conversion gain of 13 dB–17 dB for RF frequencies of 80 GHz–110 GHz and image‐rejection ratios of 17 dB–19 dB for RF frequencies of 93 GHz–100 GHz.

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Section: Image-rejection Mixermentioning

confidence: 99%

W‐Band MMIC chipset in 0.1‐μm mHEMT technology

et al. 2020

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“…123 Hence, the best way is to design an image rejected mixer that will reduce the overall receiver complexity, while enhancing its reliability and performance. [124][125][126][127] Gong et al proposed mage rejection mixers, which is a combination of a single-balanced mixer and the orthogonal bridge. 125 The design has attained an acceptable IRR, but the conversion loss is increased.…”

Section: Image Rejectionmentioning

confidence: 99%

“…[124][125][126][127] Gong et al proposed mage rejection mixers, which is a combination of a single-balanced mixer and the orthogonal bridge. 125 The design has attained an acceptable IRR, but the conversion loss is increased.…”

Section: Image Rejectionmentioning

confidence: 99%

Recent advancement in the design of mixers for software‐defined radios

Mehta

Donelli

2021

Int J RF Mic Comp-Aid Eng

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The implementation of software-defined radio necessitates a versatile radio frequency (RF) front-end that can support multiple standards in different frequency bands. This article presents the state-of-the-art multiband and wideband mixers in the context of different receiver architectures suitable for softwaredefined radio (SDR). Wideband and multiband mixer designs reported in the literature are categorized on the basis of their circuit architecture. This study tabulates the results of mixer designs with an emphasis on noise figure (NF), conversion gain (CG), linearity, and image rejection ratio. The best parameters reported in the comparison are 68-84 dB of CG, 3.2 dB of NF, 2.5 mW of power consumption, 12.5 dBm of third-order input intercept point, and 0.015 mm 2 of area at different frequencies. The study also discusses the design challenges and techniques to overcome those issues. The article concludes with the summary and prospective developments for SDR architectures.

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$W$ -Band Mixer With High Image Rejection by Mismatch Compensation Using Buffer Amplifier

Choe

Kim

Kim³

et al. 2020

IEEE Access

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In this paper, a W-band mixer integrated circuit (IC) with high image rejection ratio (IRR) is presented, compensating for the amplitude and phase mismatches between the I and Q channels in the image rejection mixer (IRM) using RF buffer amplifiers. It is shown by analysis and simulation that the signal coupling between the I and Q channels in the IRM can generate mismatches which can severely degrade the IRR, even though other circuit components are symmetrically designed so as not to induce mismatches. The coupling between two channels can become serious, especially in millimeter-wave IRM ICs where the circuit components are laid out in close proximity to reduce the chip size. It is also shown that poor isolation of millimeter-wave couplers can seriously degrade IRR. In this work, we employ an RF buffer amplifier at the RF port of the resistive mixer to compensate for the amplitude and phase mismatches. The designed W-band IRM IC is fabricated in a 0.1-µm GaAs pHEMT process. Measurements show that the bias tuning of the RF buffer amplifiers can minimize the mismatches and improve the IRR by up to 35 dB at RF from 91 to 95 GHz at an IF of 50 MHz. The IRM exhibits an IRR of 19.2-47.9 dB with conversion loss of 7.9-9.2 dB, which belongs to the highest IRR among the reported IRMs in the W-band. INDEX TERMS IC, image rejection, millimeter-wave, mixer.

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The design of image rejection mixer in W-band

Cited by 4 publications

References 5 publications

W‐Band MMIC chipset in 0.1‐μm mHEMT technology

W‐Band MMIC chipset in 0.1‐μm mHEMT technology

Recent advancement in the design of mixers for software‐defined radios

$W$ -Band Mixer With High Image Rejection by Mismatch Compensation Using Buffer Amplifier

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