相关实验视频
Updated: Jul 12, 2025

10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
11.4K
设计用于基于物联网的应用程序的多重复合器,使用加载联线共振器
Muhammad Idrees1, Sohail Khalid1, Muhammad Abdul Rehman1
1Department of Electrical Engineering, Riphah International University, Islamabad 45210, Pakistan.
Micromachines
|October 28, 2023
概括
本研究介绍了物联网系统的新型微条式复合器,实现了低插入损失和高隔离的优异性能. 设计的双倍和三倍过器验证了有效的频段管理.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 微波工程 微波工程
背景情况:
- 物联网 (IoT) 系统需要高效的多重处理器来管理多个频段.
- 现有的多重处理器设计经常面临尺寸,插入损失和隔离方面的挑战.
- 微条纹技术为开发高性能射频过器提供了一个紧的解决方案.
研究的目的:
- 为物联网应用设计和验证基于微条纹的双复合器和三复合器过器.
- 为了在特定频段 (2.55GHz,3.94GHz,5.75GHz) 实现高隔离性和选择性.
- 在尺寸和损失方面,与现有的多重复合器设计相比,以展示优越的性能.
主要方法:
- 用于微条式多重复合器的接线共振器的设计.
- 为了提高选择性,在双机中集成了五个传输杆 (TP),在三机中集成了七个TP.
- 在紧的罗杰斯杜罗伊德5880基板上进行制造,并对模拟进行实验验证.
主要成果:
- 实现的低插入损失:0.3dB (双倍变频器在2.55GHz),0.4dB (双倍变频器在3.94GHz),0.3dB (三倍变频器在2.55GHz),0.37dB (三倍变频器在3.94GHz) 和0.2dB (三倍变频器在5.75GHz).
- 实验结果与模拟性能非常接近,证实了设计的有效性.
- 证明了对多频段物联网通信至关重要的高度隔离和选择性.
结论:
- 拟议的微条式多重复合器,利用带加载的合线共振器,为物联网系统提供了出色的性能.
- 这些设计提供了一个紧而高效的解决方案,具有低插入损失和高隔离性.
- 经过验证的设计为物联网设备中改进的多频段通信铺平了道路.
相关概念视频
Design Example: Capacitance Multiplier Circuit
792
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.
792
LC Circuits
2.5K
An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
2.5K
Transmission Line Design Considerations
140
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
140
MOSFET Amplifiers
165
The MOSFET, when operating in its active region, functions as a voltage-controlled current source. In this region, the gate-to-source voltage controls the drain current. This principle underlies the operation of the transconductance MOSFET amplifier. The output current is directed through a load resistor to convert this amplifier into a voltage amplifier. The output voltage is then obtained by subtracting the voltage drop across the load resistance from the supply voltage. This process results...
165
Line Protection with Impedance Relays
83
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
Under normal conditions, low load currents keep the measured...
83
Impedance Combination
439
Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the...
439

