A Novel 30–90-GHz Singly Balanced Mixer With Broadband LO/IF

Wu, Yen-Ting; Chiong, Chau-Ching; Tsai, Jeng-Han

doi:10.1109/tmtt.2016.2622708

Cited by 17 publications

(12 citation statements)

References 16 publications

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“…This paper proposes a new and more efficient linearization method to increase the IP1dB and OP1dB of Gilbert-cell-based active mixers by analyzing the phenomenon of “reverse uplift”. Compared to other works where linearity is concerned [ 4 , 6 , 16 , 18 , 19 , 20 , 21 , 22 , 23 ], no extra components are added except a pair of phase-adjusting inductors, the linearity is greatly improved by using the energy of harmonics, and the IP1dB reaches +7.2~+10.1 dBm. At the same time, the CG and the gain flatness remain appropriate, so the excellent OP1dB performance is realized simultaneously, with an average of +5.4 dBm, which is the state-of-the-art OP1dB performance in mixers under a silicon-based process, whether active or passive.…”

Section: Introductionmentioning

confidence: 95%

“…However, it is voltage-sensitive, and the boosting effect is weakened rapidly when a large signal is input and the input-referred 1dB compression point (IP1dB) has not been raised. Source/emitter degradation is also a widely used linearization method [ 16 ], but the output-referred 1dB compression point (OP1dB) has not been improved effectively due to the expense of conversion gain. In [ 17 ], Gilbert-cell’s transconductance stage and switching stage are separated through a transformer; the linearity is improved through independent voltage bias.…”

Section: Introductionmentioning

confidence: 99%

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A 24-to-30 GHz Ultra-High-Linearity Down-Conversion Mixer for 5G Applications Using a New Linearization Method

Yang

et al. 2022

Sensors

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The linearity of active mixers is usually determined by the input transistors, and many works have been proposed to improve it by modified input stages at the cost of a more complex structure or more power consumption. A new linearization method of active mixers is proposed in this paper; the input 1 dB compression point (IP1dB) and output 1 dB compression point (OP1dB) are greatly improved by exploiting the “reverse uplift” phenomenon. Compared with other linearization methods, the proposed one is simpler, more efficient, and sacrifices less conversion gain. Using this method, an ultra-high-linearity double-balanced down-conversion mixer with wide IF bandwidth is designed and fabricated in a 130 nm SiGe BiCMOS process. The proposed mixer includes a Gilbert-cell, a pair of phase-adjusting inductors, and a Marchand-balun-based output network. Under a 1.6 V supply voltage, the measurement results show that the mixer exhibits an excellent IP1dB of +7.2~ +10.1 dBm, an average OP1dB of +5.4 dBm, which is the state-of-the-art linearity performance in mixers under a silicon-based process, whether active or passive. Moreover, a wide IF bandwidth of 8 GHz from 3 GHz to 11 GHz was achieved. The circuit consumes 19.8 mW and occupies 0.48 mm2, including all pads. The use of the "reverse uplift" allows us to implement high-linearity circuits more efficiently, which is helpful for the design of 5G high-speed communication transceivers.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

A 24-to-30 GHz Ultra-High-Linearity Down-Conversion Mixer for 5G Applications Using a New Linearization Method

Yang

et al. 2022

Sensors

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“…Balanced circuits play an important role in modern radio frequency system, especially the balanced bandpass filters, because they can be conveniently connected with the active (i.e. amplifier and mixer) and passive circuits leading to a small size of the system 1‐4 …”

Section: Introductionmentioning

confidence: 99%

Compact balanced bandpass filter based on dual‐sided parallel‐strip line

Feng

Pan

Zhu

2021

Int J RF Microw Comput Aided Eng

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A novel compact balanced bandpass filter with wideband common mode rejection is proposed in this article. The intrinsic out‐of‐phase characteristic is realized by the 180° swap structure, which is based on dual‐sided parallel‐strip line, wideband common mode (CM) rejection can be easily achieved with compact size and simple configuration. Modified coupled line resonator (MCLR) is applied to implement passband response, and MCLR is composed by conventional coupled line terminated with a λ/4 open stub. To validate the performance, one prototype with 20% 3 dB fractional bandwidth center at 2.2 GHz is designed and fabricated, over than 18 dB CM rejection extended to 2.94f0 can be realized, good agreement can be obtained.

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“…Down-conversion mixers are crucial elements in millimeterwave (MMW) systems, including radio astronomical receivers, complex electromagnetic environment monitors and measurement instruments [1,2,3]. For this type of mixer, achieving both wide RF and IF bandwidths without sacrificing other performances is required.…”

Section: Introductionmentioning

confidence: 99%

“…A doubly balanced mixer (DBM) provides wide bandwidth, excellent suppression of even harmonics of 1 [4]. In addition, a DBM with diodes does not require DC consumption and achieves higher input P1dB than that of an active mixer [2,5]. The two most popular types of doubly balanced mixers (DBMs) are doubly balanced star mixers (DBSMs) and doubly balanced ring mixers (DBRMs).…”

Section: Introductionmentioning

confidence: 99%

Design of a 35–95 GHz fundamental monolithic mixer based on a novel IF extraction structure

Lin

Zhang²,

Jia³

et al. 2019

IEICE Electron. Express

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The letter presents a high-performance doubly balanced ring mixer (DBRM) fabricated by a 0.1 µm GaAs pHEMT process that achieves ultrawide radio-frequency (RF) and intermediate frequency (IF) bandwidths. A multiple-coupled-line Marchand balun is optimized to extend the RF bandwidth. A novel structure is designed to directly extract the IF current from the RF balun without an additional IF coupler. Due to the proposed IF extraction structure, the IF bandwidth is broadened with decreased complexity. The size of the whole chip including the probe GSG pads is 0.95×0.65 mm 2 . The measured results show that the conversion loss is 7.2-11.9 dB for the RF frequency range of 35-95 GHz with an LO power level of 14 dBm and a fixed IF frequency of 1 GHz. In addition, the conversion loss is better than 12 dB for the IF frequency range from DC to 30 GHz under a fixed LO frequency. key words: ultrawide bandwidth, doubly balanced ring mixer (DBRM), Marchand balun, monolithic microwave integrated circuit (MMIC) Classification: Microwave and millimeter-wave devices, circuits, and modules

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A Novel 30–90-GHz Singly Balanced Mixer With Broadband LO/IF

Cited by 17 publications

References 16 publications

A 24-to-30 GHz Ultra-High-Linearity Down-Conversion Mixer for 5G Applications Using a New Linearization Method

A 24-to-30 GHz Ultra-High-Linearity Down-Conversion Mixer for 5G Applications Using a New Linearization Method

Compact balanced bandpass filter based on dual‐sided parallel‐strip line

Design of a 35–95 GHz fundamental monolithic mixer based on a novel IF extraction structure

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