Substrate Integrated Waveguide Filter–Amplifier Design Using Active Coupling Matrix Technique

Gao, Yang; Zhang, Fan; Lv, Xin; Guo, Cheng; Shang, Xiaobang; Li, Lei; Liu, Jiashan; Liu, Yuhuai; Wang, Yi; Lancaster, M.J.

doi:10.1109/tmtt.2020.2972390

Cited by 26 publications

(12 citation statements)

References 22 publications

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“…Resonator-based filter matching approaches can also be employed to provide the desired matching for other types of microwave circuits with complex port impedance. For example, we have demonstrated this on filter-amplifiers with different topologies [19]- [21], orthomode transducers [25],…”

Section: Extending Passive Filter Design Methods To Active Circuitsmentioning

confidence: 93%

“…In the resonator-based filter-amplifier topology, the complex impedance conversion can be achieved by choosing the appropriate coupling values [18]. For example, if the transistor has a complex input admittance Yin = a + jb (a and b are real constant), to achieve the desired Chebyshev (or other) filtering response, the coupling coefficients can be modified as [19]- [21],…”

Section: Extending Passive Filter Design Methods To Active Circuitsmentioning

confidence: 99%

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Integrated Filter–Amplifiers: A Comprehensive Review

Gao

Shang

et al. 2022

IEEE Microwave

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Section: Extending Passive Filter Design Methods To Active Circuitsmentioning

confidence: 93%

Section: Extending Passive Filter Design Methods To Active Circuitsmentioning

confidence: 99%

Integrated Filter–Amplifiers: A Comprehensive Review

Gao

Shang

et al. 2022

IEEE Microwave

Self Cite

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“…In this case, we can notice that despite that various EM optimization techniques have been proposed, efficient SAO frameworks are still necessary to address the increasingly emerging problems in microwave filter designs. The challenges can be found in the accurate modeling the filter design with higher dimensional variables (the number of design variables larger than 20), complex structures, i.e., cross-couplings, multiple modes, multiple bands and multiple channels and integrated filtering components, i.e., filter antenna [117], filtering amplifier [118]- [119] and so on.…”

Section: A Problem-oriented Sao Em Design Methodsmentioning

confidence: 99%

State-of-the-Art: AI-Assisted Surrogate Modeling and Optimization for Microwave Filters

Zhang

Cheng

et al. 2022

IEEE Trans. Microwave Theory Techn.

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Microwave filters are indispensable passive devices for modern wireless communication systems. Nowadays, electromagnetic (EM) simulation-based design process is a norm for filter designs. Many EM-based design methodologies for microwave filter design have emerged in recent years to achieve efficiency, automation, and customizability. The majority of EM-based design methods exploit low-cost models (i.e., surrogates) in various forms and artificial intelligence techniques assist the surrogate modeling and optimization processes. Focusing on surrogate assisted microwave filters designs, this paper firstly analyzes the characteristic of filter design based on different design objective functions. Then, the state-of-the-art filter design methodologies are reviewed, including surrogate modeling (machine learning) methods and advanced optimization algorithms. Three essential techniques in filter designs are included: 1) Smart data sampling techniques; 2) Advanced surrogate modeling techniques. 3) Advanced optimization methods and frameworks. To achieve success and stability, they have to be tailored or combined together to achieve the specific characteristics of the microwave filters. Finally, new emerging design applications and future trends in filter design are discussed.

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“…Nowadays, many different techniques have been utilized to design filtering PAs [7], [8], [9], [10], [11], [12], [13],…”

Section: Introductionmentioning

confidence: 99%

“…However, they suffer from narrow bandwidth and complicated structure. Substrate integrated waveguide (SIW) filters [9], [10], [11] and metal integrated and substrate integrated suspended line (MI-SISL) [12] are used to implement PAs with limited bandwidth as well.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Filtering Power Amplifier Using Impedance Area-Based Optimization

Zhan

Xue

2023

IEEE Trans. Circuits Syst. I

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This paper presents an optimization method of wideband filtering power amplifier (PA) with high efficiency. In order to achieve the expected high efficiency in the wide passband and reduce design difficulty, a high-performance area-based impedance target for computer-aided automatic optimization is proposed, which avoids the unexpected efficiency degradation caused by the conventional impedance target. In the meanwhile, the out-of-band optimization target described by impedance is also proposed to obtain bandpass filtering characteristic. The in-band and out-of-band optimization targets are utilized to design the output matching network to realize fundamental and harmonic impedance matching precisely, as well as the filtering response. For demonstration, a filtering PA operating in 3.3-3.8 GHz is implemented and measured. The measured small-signal S-parameter exhibits flat gain in passband and good bandpass filtering response. The measured power-added efficiency (PAE) is larger than 62% within the entire working band and the highest PAE is 71.7%.

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Substrate Integrated Waveguide Filter–Amplifier Design Using Active Coupling Matrix Technique

Cited by 26 publications

References 22 publications

Integrated Filter–Amplifiers: A Comprehensive Review

Integrated Filter–Amplifiers: A Comprehensive Review

State-of-the-Art: AI-Assisted Surrogate Modeling and Optimization for Microwave Filters

Highly Efficient Filtering Power Amplifier Using Impedance Area-Based Optimization

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