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相关概念视频

Diversity of Antigen Receptors01:28

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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
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IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
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Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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模式多样化补丁天线用于6GHz以下的5G通信应用程序.

Komal Iqbal1, Abshar Hassan1, Qasim Umar Khan2

  • 1National University of Sciences and Technology, Islamabad, Pakistan.

Scientific reports
|September 27, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种用于5G通信的新型双端口微条纹补丁天线. 该天线在3.5GHz实现了明显的宽侧和形辐射模式,这对于6GHz以下的应用至关重要.

关键词:
宽侧辐射的辐射范围圆形的辐射模式 圆形的辐射模式双端口天线天线.模式多样性 模式多样性

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科学领域:

  • 电气工程 电气工程
  • 电磁学 电磁学 电磁学 电磁学
  • 天线理论天线理论

背景情况:

  • 5G通信系统需要先进的天线设计来有效地传输信号.
  • 6GHz以下的频率对于5G的广泛部署至关重要.
  • 微条纹补丁天线在低调和易于集成方面具有优势.

研究的目的:

  • 提出一种新的双端口,单层,模式多样化的微条纹补丁天线.
  • 使用单个天线元件实现宽侧和形辐射模式.
  • 为了验证天线在6GHz以下的5G应用中的性能.

主要方法:

  • 一个微条纹补丁天线的设计,包括一个带的环状环和一个带槽的圆形补丁.
  • 宽侧辐射的TM11模式和形辐射的TM31模式的激发.
  • 模拟和制造用于性能评估的天线原型.

主要成果:

  • 该天线运行在3.5GHz,在6GHz以下的5G频段内.
  • 实现了宽侧梁的7.2 dBi和形图案的4.6 dBi的增益.
  • 在-28dB以下,证明了极好的端口隔离.
  • 测量结果与模拟结果非常相匹配.

结论:

  • 拟议的天线设计成功地提供了双辐射模式.
  • 由于其性能特征,天线适用于6GHz以下的5G通信应用.
  • 该设计为无线系统中多模式天线要求提供了一个有希望的解决方案.