International Journal of RF and Microwave Computer-Aided Engineering最新文献_第2页

Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G 用于中频5G的集成不等威尔金森和λ/4相网络的宽带GaN Doherty功率放大器

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-06-10 DOI: 10.1155/mmce/8619355

Tugba Haykir Ergin, Ismail Sisman

{"title":"Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G","authors":"Tugba Haykir Ergin, Ismail Sisman","doi":"10.1155/mmce/8619355","DOIUrl":"https://doi.org/10.1155/mmce/8619355","url":null,"abstract":"This paper presents the design and implementation of a high-efficiency two-way Doherty power amplifier (DPA) for sub-6 GHz 5G New Radio (NR) applications, specifically targeting the n78 band (3.3–3.8 GHz). The proposed gallium nitride (GaN)-based DPA delivers a peak output power of 42.5 dBm, a gain of 13.3 dB, and a maximum power-added efficiency (PAE) of 83% at 3.5 GHz with VDD = 28 V under a 50-Ω matched load. Both amplifier branches employ CG2H40010F GaN HEMTs configured in Class AB (carrier) and Class C (peaking) modes to achieve efficient load modulation across the operating band. A key feature of the proposed design is an integrated input network based on an unequal Wilkinson power divider combined with a λ/4 phase-delay section, which is system-level optimized to provide appropriate power division, phase alignment, and impedance matching for Doherty operation without requiring additional hybrid couplers. This compact structure minimizes insertion loss, improves amplitude–phase balance, and enhances Doherty load modulation performance across the 3.3–3.8-GHz range. The DPA is implemented on a Rogers RO4003C substrate and incorporates λ/4 impedance inverters and a seventh-order postharmonic suppression network to achieve superior spectral purity, reducing harmonic components below −30 dBc. Full-wave electromagnetic simulations and experimental validations demonstrate strong agreement between measured and simulated results, confirming the effectiveness of the proposed architecture as a broadband, energy-efficient, and manufacturable solution for next-generation sub-6 GHz 5G base-station transmitters.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2026 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/8619355","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A High-Isolation Triband CPW-Fed MIMO Antenna With Wideband Performance for L-Band, Smart Home IoT, and Sub-6 GHz Wireless Systems 一种适用于l波段、智能家居物联网和Sub-6 GHz无线系统的宽带性能高隔离三频cpw馈入MIMO天线

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-06-08 DOI: 10.1155/mmce/2526699

Md. Sadman Sakib Chowdhury Manjur, Muhammad Asad Rahman, Maodudul Hasan

{"title":"A High-Isolation Triband CPW-Fed MIMO Antenna With Wideband Performance for L-Band, Smart Home IoT, and Sub-6 GHz Wireless Systems","authors":"Md. Sadman Sakib Chowdhury Manjur, Muhammad Asad Rahman, Maodudul Hasan","doi":"10.1155/mmce/2526699","DOIUrl":"https://doi.org/10.1155/mmce/2526699","url":null,"abstract":"This paper presents a tri-band CPW-fed two-element MIMO antenna designed for smart home Internet of Things (IoT) applications. The proposed antenna operates at 1.5, 2.4, and 5.8 GHz, with a wide upper-band response from 3.84 to 7.14 GHz, covering major IoT, Wi-Fi, Bluetooth, and sub-6 GHz wireless systems. The novelty of this work lies in the integrated antenna and compact decoupling design, which simultaneously achieves wideband operation, high isolation, and a small footprint. The antenna shows reflection coefficients better than −15 dB across all operating bands and interelement isolation below −28 dB, ensuring low mutual coupling. The design also provides low envelope correlation, a diversity gain close to 10 dB, and stable radiation characteristics. Measured and simulated results show good agreement. Owing to its compact size, strong isolation, and reliable MIMO performance, the proposed antenna is well-suited for next-generation smart home and IoT wireless devices.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2026 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/2526699","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Dual-Frequency Wideband Inverse Class-F Power Amplifier Using SRFT Matching 基于SRFT匹配的双频宽带反f类功率放大器

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-06-02 DOI: 10.1155/mmce/5682618

Haitao He, Guijuan Zhao, Yunqiang Liu, Yifei Sun, Guipeng Liu

引用次数: 0

Novel Compact Quad-Band HMSIW BPF and FPD With Low Loss and Tunable Passbands 具有低损耗和可调谐通带的新型紧凑型四频段HMSIW BPF和FPD

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-06-01 DOI: 10.1155/mmce/3128857

Mostafa Danaeian

{"title":"Novel Compact Quad-Band HMSIW BPF and FPD With Low Loss and Tunable Passbands","authors":"Mostafa Danaeian","doi":"10.1155/mmce/3128857","DOIUrl":"https://doi.org/10.1155/mmce/3128857","url":null,"abstract":"This work introduces a new quad-band bandpass filter (BPF) and filtering power divider (FPD) based on half-mode substrate integrated waveguide (HMSIW) technology and metamaterial concept. To achieve a high level of miniaturization, multiple design approaches are jointly employed, including HMSIW implementation, evanescent-mode operation, stepped-impedance resonators (SIRs), fractal geometries, and the meandered technique. Using the aforementioned design strategies, quad-band HMSIW BPF and quad-band HMSIW FPD with equal power-splitting characteristics were developed. These circuits operate at center frequencies of 1.75, 3.3, 4.5, and 5.2 GHz and were thoroughly validated through simulation, fabrication, and experimental measurement. The passband center frequencies are readily tunable through dimensional adjustments. Experimental results closely match the simulated responses. Moreover, the proposed structures occupy an extremely small footprint, with an overall size below <math></math>, clearly demonstrating the high level of miniaturization achieved. The proposed structures offer several notable benefits, including a highly compact footprint, low insertion loss, tunable passband characteristics, reduced manufacturing cost, straightforward integration with planar microwave circuits, acceptable return loss performance, and flexible tuning of the operating center frequencies.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2026 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/3128857","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148173863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-05-21

引用次数: 0

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-05-20

引用次数: 0

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-04-13

引用次数: 0

Design and Experimental Validation of a Low-Cost Waveguide Circulator for S-Band Systems s波段系统低成本波导环行器的设计与实验验证

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-04-11 DOI: 10.1155/mmce/5319510

Alejandro Trejo León, Fabiola Martínez Zúñiga, Jorge Roberto Sosa Pedroza

引用次数: 0

Full-Wave Synthesis Technique for the Design of an Optimized 0.5–18 GHz 90° Hybrid Coupler 基于全波合成技术的0.5-18 GHz 90°混合耦合器优化设计

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-04-09 DOI: 10.1155/mmce/1531761

Johan B. du Toit, Johan Joubert, Johann W. Odendaal

引用次数: 0

Eight-Element Antenna Array Based on a Triple Open-Loop Structure for 5G N41/N77/N79 Applications 基于三开环结构的5G N41/N77/N79八元天线阵列

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2026-04-02 DOI: 10.1155/mmce/6850853

Jianlin Huang, Lefei He, Xuanhe Wei, Lingrong Shen, Zhizhou Chen, Gui Liu

{"title":"Eight-Element Antenna Array Based on a Triple Open-Loop Structure for 5G N41/N77/N79 Applications","authors":"Jianlin Huang, Lefei He, Xuanhe Wei, Lingrong Shen, Zhizhou Chen, Gui Liu","doi":"10.1155/mmce/6850853","DOIUrl":"https://doi.org/10.1155/mmce/6850853","url":null,"abstract":"This paper presents an eight-element antenna array designed for triple-band multi-input multi-output (MIMO) operation in fifth-generation (5G) mobile terminals. Each antenna element comprises a triple open-loop structure on a metal frame and fed by a customized feed element. The triple open-loop design not only significantly miniaturizes the radiator but also provides wide bandwidth. The dimensions of the proposed antenna array are approximately 8.2 × 7 mm, with a small ground clearance of 8.2 × 0.3 mm. It fully covers 5G New Radio (NR) bands N41 (2.496–2.690 GHz), N77 (3.3–4.2 GHz), and N79 (4.4–5.0 GHz) at the three resonance frequencies. Several critical parameters—including bandwidth, reflection coefficient, isolation, total radiation efficiency, and envelope correlation coefficient—have been studied. An antenna prototype was fabricated and measured; excellent agreement between simulation and experiment confirms that the triple open-loop array is well suited for 5G handsets demanding compact, triple-band MIMO antennas.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2026 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/6850853","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147714882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0