Co-Design of Second Harmonic-Tuned Power Amplifier and a Parallel-Coupled Stub Loaded Resonator

Haider, Muhammad Furqan; You, Fei; Tian, Qi; Li, Chuan; Ahmad, Shakeel

doi:10.1109/tcsii.2020.2991888

Cited by 21 publications

(10 citation statements)

References 13 publications

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“…However, practical TRX modules exhibit certain flaws because of the erroneous test stimulus of data converters, instability, and imperfections of feedback and signal processing equipment (VSG/VSA). These discontinuities bring marginal inconsistencies between simulated and measured results [22], [25]. In this pursuit, the recent research works present energycost efficient performances of data converters under different operating conditions, e.g., [130], where the performance constraints of high-precision ADCs are eliminated after defining the PD codes at DAC input, which as a result, characterizes the DAC/ADC co-testing at the same time overcoming the sensitivity of large feedback overheads.…”

Section: • Critical Analysismentioning

confidence: 99%

“…Since HPD leverage the benefits of analog and digital PD solutions while guaranteeing the linearity and performance requirements of very nonlinear system applications. In particular, currently, the predistorter is widely implemented in the hybrid baseband [52], which has emerged as an attractive proposition in terms of much lower implementation complexity and outperforms the existing alternatives with DPD-only [25], or APD-only [264] PA setup. With the design objective of hybrid SAs in a consolidated MIMO platform, a linear combination of RF signals and then performing the parameter estimation, especially in coherence MMW bandwidths, remains a formidable challenge.…”

Section: Hybrid Predistortionmentioning

confidence: 99%

“…To avoid such constraints, predistortion (PD) in its digital (DPD) variant is considered as the essential component of the amplification chain [17], [19]- [21]. For the linearization of 4G long-term evolution (LTE) waveforms, a standalone PA accompanied by a DPD solution is noticeably operate near the saturation region while romping at the PAPR and adjacent channel leakage/power ratio (ACLR/ACPR) levels of ≥8-dB and >-45 dBc, respectively [22]- [25]. Such an appetite for LTE traffic was achievable mainly because of the two reasons: 1) a limited number of antenna phased arrays at macro-cells BS (MBS) transceiver (TRX) and thus 2) the implementation feasibility of a dedicated digital baseband unit for each antenna element [26].…”

Section: Introductionmentioning

confidence: 99%

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Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

Haider

You

et al. 2022

IEEE Commun. Surv. Tutorials

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The next-generation (5G/6G) wireless communication aims to leapfrog the currently occupied sub-6 GHz spectrum to the wideband millimeter-wave (MMW) spectrum. However, MMW spectrums with high-order modulation schemes drive the power amplifier (PA) at significant back-off, causing severe nonlinear distortions, thus deteriorating the transceiver's (TRXs) modulation process. Typically, the TRX efficacy is quantified with standardized linearization matrices, which take advantage of different predistortion (PD) schemes to handle deep compression of the PA. In this regard, TRX baseband signals are mostly linearized in the digital domain, where digitally controlled linearization needs higher sampling rates due to increasing MMW bandwidths to compensate for intermodulation (IMD) products, resulting in increased system cost and power consumption. Alternately, the digitally controlled analog-based linearization, i.e., the hybridization of digital predistortion (DPD) and analog predistortion (APD), is highly productive and cost-effective for fulfilling the linearized energy-efficient design vision of MMW networks. Therefore, this paper puts an extensive spotlight on the progress in PD-based linearization for 5G and beyond communications. It first provides background information on the advancements of PD schemes through recent surveys, then classifies the general roadmap of PD waveform processing across the TRX system models as preliminary. After this, we present three prominent PD architectures and their design approaches with intrinsic performance metrics. Finally, we explore four case studies encompassing PD operation under certain nonlinear constraints of different communication schemes. We examine the suitability of PD-based linearization solutions, both existing and proposed till the first quarter of 2022, and identify the potential prospects in this domain.

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Section: • Critical Analysismentioning

confidence: 99%

Section: Hybrid Predistortionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

Haider

You

et al. 2022

IEEE Commun. Surv. Tutorials

Self Cite

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“…In reference 9, a ring resonator filter is considered for the design of broadband and tri‐band PA although its structure is complicated due to a number of open stubs for transmission zeros. A parallel‐coupled stub‐loaded resonator in reference 10 is introduced for the matching network of a wideband PA, yet the access fractional bandwidth is just about 54.5%.…”

Section: Introductionmentioning

confidence: 99%

Design of high‐efficiency , multi‐octave hybrid continuous mode power amplifier with novel low‐pass filtering matching network

Shariatifar

Khorramizadeh

Abdipour

2022

Int J RF Mic Comp-Aid Eng

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This paper presents a design method for a multi-octave, high-efficiency power amplifier (PA) with a novel low-pass filtering matching network. Both extended continuous Class-F and continuous Class-F À1 are engaged to expand the design space for the ultra-broad operating band. A wideband vertex coupled radial stubs (VCRS) low-pass filter alongside a transmission line network (TLN) is proposed as an output impedance matching network of the PA. The wide rejection band and sharp transition band of this filter make it suitable for harmonic tuning PAs. To verify the feasibility of the proposed structure, the PA is fabricated and its performance is measured. The fractional bandwidth of 155% across 150 to 1200 MHz with a drain efficiency of 61%-73% and output power of 38.9-39.5 dBm is achieved.

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“…A stub loaded parallel‐coupled lines microstrip BPF proposes in Ref. 19 as the OMN of the PA, which provides harmonic suppression can have a good impact on the performance of PA. However, it is difficult for the above‐mentioned cascaded FPA to achieve a wider bandwidth and higher efficiency at the same time.…”

Section: Introductionmentioning

confidence: 99%

Compact broadband high‐efficiency power amplifier using terminated coupled line filter matching network

Jian

Cheng

et al. 2021

Int J RF Microw Comput Aided Eng

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This article presents a compact broadband high‐efficiency power amplifier (PA) with a filtering structure. Unlike the cascaded filter behind the traditional PA, the proposed cascaded branch load coupling microstrip line structure is used to design the output matching network (OMN) of the PA. It plays the roles of impedance matching and filtering, which is called a filtering OMN, the overall size of the circuit will be reduced. Two coupled microstrip lines cascaded are used to extend the working bandwidth, and a microstrip line is loaded to the port of the coupled microstrip lines to ensure high selectivity and good out‐of‐band performance. For verification, a broadband high‐efficiency PA is designed and manufactured by using CGH40010F GaN HEMT. Measurements demonstrate that in the range from 1.2 to 3.6 GHz, the saturated output power is from 39.8 to 41.8 dBm, the drain efficiency (DE) with a 62%–73%, and the gain is between 9.9 and 11.7 dB.

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Co-Design of Second Harmonic-Tuned Power Amplifier and a Parallel-Coupled Stub Loaded Resonator

Cited by 21 publications

References 13 publications

Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

Predistortion-Based Linearization for 5G and Beyond Millimeter-Wave Transceiver Systems: A Comprehensive Survey

Design of high‐efficiency , multi‐octave hybrid continuous mode power amplifier with novel low‐pass filtering matching network

Compact broadband high‐efficiency power amplifier using terminated coupled line filter matching network

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