一个小型化的双频段频率选择面,用于WLAN应用程序的增强容量负载
Muhammad Idrees1, Sai-Wai Wong1, Abdul Majeed1
1State Key Laboratory of Radio Frequency Heterogeneous Integration, Sino-British Antennas and Propagation Joint Laboratory of MOST, Guangdong Engineering Research Center of Base Station Antennas and Propagation, Shenzhen Key Laboratory of Antennas and Propagation, College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China.
Sensors (Basel, Switzerland)
|December 31, 2025
概括
本研究介绍了一种紧的双频段频率选择面 (FSS),用于有效的射频屏蔽. 这种新的设计可以在没有额外组件的情况下抑制WiFi和WLAN频率,从而提供稳定的性能.
科学领域:
- 电磁学和应用物理学
- 用于射频应用的材料科学
背景情况:
- 无线电频率 (RF) 屏蔽对于减轻电磁干扰 (EMI) 是至关重要的.
- 现有的频率选择性表面 (FSS) 经常面临小型化,双频段性能和角稳定性的挑战.
- 开发用于WiFi和WLAN等特定通信频段的紧,高效的FSS仍然是一个活跃的研究领域.
研究的目的:
- 为了呈现一个小型化的双频段频率选择面 (FSS) 使用电容增强技术.
- 为了实现RF屏蔽,同时抑制WiFi 2.45GHz和WLAN 5.5GHz频段.
- 在FSS设计中证明角稳定性和极化独立性.
主要方法:
- 采用两个独立的角修改方形循环 (CMSL) 元素的双带FSS的设计.
- 通过拐角截断来提高FSS元件的电容,消除了对块元件的需求.
- 为FSS结构开发一个等效电路模型 (ECM).
- 一个有限的FSS原型的制造和电磁 (EM) 模拟.
主要成果:
- 拟议的FSS有效地抑制了WiFi 2.45 GHz和WLAN 5.5 GHz频段.
- 该设计在斜率下呈现出角稳定和极化不敏感的光谱反应.
- 来自制造的原型的测量结果与EM模拟密切匹配.
- FSS证明了其对其他频率的可扩展性.
结论:
- 微型双频FSS为目标射频屏蔽应用提供了一个有前途的解决方案.
- 通过角截断增强电容的技术为小型化和性能增强提供了有效的方法.
- 该设计的稳定性和可扩展性使其适用于各种电磁干扰缓解场景.
相关概念视频
Design Example: Capacitance Multiplier Circuit
1.4K
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
1.4K
Mesh Analysis for AC Circuits
645
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
645
Equivalent Capacitance
2.0K
Multiple capacitors can be connected in a circuit in series or parallel configuration. When the capacitor combination is connected to a battery, the potential drop across each capacitor and the magnitude of charge stored in the individual capacitor depends on the type of the connection. The capacitor combination is replaced by a single equivalent capacitor that stores the same amount of charge as the combination for a given potential difference.
The following strategies are adopted to calculate...
The following strategies are adopted to calculate...
2.0K
Equivalent Capacitance
637
From the study of resistive circuits, it is understood that employing a series-parallel combination serves as an effective strategy for simplifying circuits. Capacitors can be arranged within a circuit in one of two ways: a series configuration or a parallel configuration. The way these capacitors are connected to a battery will influence both the potential drop across each individual capacitor and the size of the charge that each capacitor can store. This is determined by the specific type of...
637
Parallel Resonance
491
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
491
Capacitor With A Dielectric
4.8K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
4.8K


