High gain directional antenna array for WiMAX application

Zhao, Xiaoli; Jin, Jie

doi:10.1007/s12209-014-2255-1

Cited by 5 publications

(6 citation statements)

References 13 publications

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“…In the second band, −10 dB was achieved. As previously reported, fr shifts to the left or right depending on the substrate [5]. The best folding effect results of the PF occur at 60 • -40 • , as shown in Table 2, with multiband at approximately −35.73 dB.…”

Section: Resonance Frequencysupporting

confidence: 75%

“…To meet public and industrial needs, electronics and communication engineering are moving toward smart technologies, such as smart devices for healthcare, smart cities, smart homes, and smart cars [1][2][3][4]. In all aspects, wireless communication is required with different conformal structures [5,6]. Among the different types of communication terminals, patch antennas (PAs) are the most useful for wireless communication because of their design simplicity and possible frequency bands [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Systematic Flexible Antenna Performance Study of V-folding Percentage Influence

Ayyala¹,

Thakur²,

Baccar³

et al. 2023

PIER C

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In wireless technology, microstrip patch antennas are often used in communication systems with various designs. However, the effect of geometrically folded antennas on wireless communication performance is unclear. To address this problem, an in-depth study of the flexible antenna parameters was performed through V-folding analysis. A systematic and complete analysis of the percentage of folding in patch antennas was performed. The folding of patch antennas is expected to become mandatory because patch antennas are integrated and molded according to specified object shapes. The designed antenna was operated at 0.1-5.0 GHz to investigate the folding performance in the frequency range of 1.00-3.78 GHz used in many wireless applications, such as GPS, GSM, and LTE standards. A promising operating frequency for flat (unfold) antennas is 1.42 GHz with an achieved multiband bandwidth of 31.6 MHz, which shifted according to the folding angle 'a' but with good performance. The results of this study can be used to predict the performance of an antenna when it is placed on a product of any shape, according to the designed object pattern.

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Section: Resonance Frequencysupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Systematic Flexible Antenna Performance Study of V-folding Percentage Influence

Ayyala¹,

Thakur²,

Baccar³

et al. 2023

PIER C

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show abstract

“…Different varieties of smart devices were developed for health care, smart cities, smart homes, and smart cars [1][2][3][4]. In all aspects of this technological race, wireless communications with different conformal and performing structures are needed [5]. Relevant antenna design must be developed for different types of mobile terminals as wearable communication devices [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Innovative Methodology to Improve Flexible Antenna Percentage V-folding Performance

Kumar,

Thakur,

Baccar

et al. 2024

PIER B

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The folding antennas are anticipated to become mandatory because of integration necessity according to communication object shapes. The effect of folded antennas on electromagnetic (EM) radiation is an open question for RF and microwave wireless engineers. An innovative approach to explore the flexible patch antenna (FPA) parameters through V-folding analysis is addressed for this problem. This paper is focused on the methodological approach of the FPA study by considering an innovative V-folding behavior compared to the classical flat condition. As a proof-of-concept, FPA prototypes are designed on a Kapton substrate, simulated, fabricated, and tested. A non-shifting operating frequency is achieved at 3.4 GHz for all percentage-wise folding with a flat (unfold) bandwidth about 360.8 MHz with good acceptable performance. The FPA performance prediction as reflection coefficient, efficiency, gain, and directivity versus forward and back V-folding percentage and angle are examined. The obtained result can be exploited to predict the V-folding effect on the communication performances of transceiver systems like radar, satellite, and multimedia applications.

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“…Glycyrrhetinic acid (GA), which has an oleanolane-type skeleton, is a pentacyclic triterpene component in Glycyrrhize glabra L extract, a traditional Chinese medicine, and is widely distributed in nature. With multiple biological activities such as anti-infammatory [1], anti-tumor [2,3], antioxidant [4], liver protection [5,6], and enhanced cellular immune regulation [7], GA has signifcant curative efects on ventricular arrhythmias induced by various reasons, can protect myocardium, and can reduce myocardial ischemic damage for acute myocardial infarction [8]. Te biological role of GA in improving lung function has been confrmed.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Validation of the Network Pharmacology of the Mechanism of Glycyrrhetinic Acid for the Treatment of High-Altitude Pulmonary Hypertension

Ainaisi,

Tao,

Maimaitiyiming

et al. 2024

Journal of Food Biochemistry

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Glycyrrhetinic acid (GA) is a pentacyclic triterpene component in Glycyrrhize glabra L, it has demonstrated an inhibitive effect on high-altitude pulmonary hypertension (HAPH), but the molecular action is still not known. We aimed to explore the mechanism of GA for the treatment of HAPH based on network pharmacology and molecular docking method. Cell experiment validation was also conducted. The targets for GA were screened using the Swiss Target Prediction and Batman databases. The HAPH-related targets were obtained using the GeneCards and OMIM databases. The common targets for diseases and drugs were obtained using a Venn diagram. The core targets were screened using the String database. Then, a component-target-disease diagram and protein–protein interaction (PPI) network mutual assistance diagram were developed using Cytoscape3.9.1 software. GO functional and KEGG pathway enrichment analyses were conducted using the Metascape database. Finally, molecular docking of the target and its corresponding active components were performed using Autodock software. A total of 68 common targets for glycyrrhetinic acid high-altitude pulmonary hypertension were screened out. The core targets include PTGS1, MMP1, SERPINA6, and nitric oxide synthase (NOS2), involving PPAR signal pathway, human cytomegalovirus infection, IL-17 signal pathway, proteoglycans in cancer, and other pathways. The molecular docking affinity was −8.4 kcal·mol−1 in average, indicating that GA has a good binding stability with key target proteins. In the PDGF-BB-induced PASMC proliferation model, PASMC proliferation and the p-p38, p38, p-ERK1/2, and ERK1/2 protein expression were inhibited. The pharmacological mechanism of GA for the treatment of HAPH was characterized by multi-target and multi pathway. GA may serve as a promising therapeutic candidate for HAPH but still needs further in vivo/in vitro experiment.

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High gain directional antenna array for WiMAX application

Cited by 5 publications

References 13 publications

Systematic Flexible Antenna Performance Study of V-folding Percentage Influence

Systematic Flexible Antenna Performance Study of V-folding Percentage Influence

Innovative Methodology to Improve Flexible Antenna Percentage V-folding Performance

Analysis and Validation of the Network Pharmacology of the Mechanism of Glycyrrhetinic Acid for the Treatment of High-Altitude Pulmonary Hypertension

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