Experimentally investigating the degradations of the <scp>GaN PA</scp> indexes under different temperature conditions

Zhou, Shaohua

doi:10.1002/mop.32663

Cited by 10 publications

(9 citation statements)

References 22 publications

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“…A 100 kHz to 50 GHz pre-amplifier was used for linearity measurements to amplify the input RF signal because the design has an ultra-high IP1dB. In order to obtain general performance, a room temperature of 27 ℃ was set for measurement [ 24 ].…”

Section: Simulations and Measurementsmentioning

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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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: Simulations and Measurementsmentioning

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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“…For example, when PAs are used in wireless transmitter arrays (e.g., multiple-input multiple-output (MIMO) or radar arrays) [ 5 ], the temperature of the PA is not only determined by its self-heating [ 5 , 7 , 8 ] but is also affected by thermal coupling with nearby PAs [ 9 ], leading to degradation of its specifications. In severe cases, this will lead to the failure of the wireless communication system in which it is located [ 10 ]. Therefore, to know the relationship between the failure of the wireless communication system and the degradation of the PA specification, it is necessary to investigate the relationship between the degradation of PA specifications and temperature variations.…”

Section: Introductionmentioning

confidence: 99%

Support Vector Machine–Based Model for 2.5–5.2 GHz CMOS Power Amplifier

2022

Self Cite

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A power amplifier (PA) is the core module of the wireless communication system. The change of its specification directly affects the system’s performance and may even lead to system failure. Furthermore, change in the PA specification is closely related to changes in temperature. To study the influence of PA specification change on the system, we used a support vector machine (SVM) to model the temperature characteristics of PA. For SVM modeling, the question of how much experimental data should be used for modeling to meet the requirements is a constant problem. To address this issue, we investigate the effect of different amounts of training data on the modeling of SVM models. The results show that only 75% of the experimental data needs to be used in the modeling process to satisfy the modeling requirements of the SVM model. The number of measurement points required in the PA specification degradation experiment can be reduced by 25%. The results of this paper serve as a guide for planning the number of experimental measurement points and reducing the measurement cost and measurement time.

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“…1 summarizes the capacity-reach for C band IM/DD optical systems over dispersion-uncompensated links. The most commonly used DSP algorithms include the decision feedback equalizer [1,2], Tomlinson-Harashima precoding [3][4][5], maximum likelihood sequence estimation (MLSE) [6][7][8], neural network equalizer (NNE) [9] for the single-carrier modulation and adaptive bit and power loading (ABPL) [10,11] for the multi-carrier modulation. In our previous work, we proposed a 100Gbit/s multi-rate Nyquist-subcarrier modulation (SCM) signal with seven subcarriers over 50km standard single-mode fiber (SSMF) transmission [12].…”

Section: Introductionmentioning

confidence: 99%

Record Capacity-Reach of C band IM/DD Optical Systems over Dispersion-Uncompensated Links

Wang¹,

Zhou²,

Wei³

et al. 2022

Preprint

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Experimentally investigating the degradations of the GaN PA indexes under different temperature conditions

Cited by 10 publications

References 22 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

Support Vector Machine–Based Model for 2.5–5.2 GHz CMOS Power Amplifier

Record Capacity-Reach of C band IM/DD Optical Systems over Dispersion-Uncompensated Links

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