相关实验视频
Updated: Feb 28, 2026

10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
12.0K
一个紧的UHF威尔金森功率分隔器的设计,使用一个组合的T形CCMRC共振器进行波抑制
Saeed Roshani1, Salah I Yahya2, Golshan Mohamadpour3
1Department of Electrical Engineering, Ker.C., Islamic Azad University, Kermanshah 67189, Iran.
Micromachines
|February 27, 2026
概括
这项研究介绍了一种紧的超高频微带分隔器,可以有效地抑制宽带波. 这种新的设计采用了组合共振器,大大减少了尺寸,同时保持了无线系统的出色性能.
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:
- 微带分隔器是射频和微波系统中的关键组件.
- 传统的设计经常面临大小和和抑制的挑战.
- 在现代无线通信中需要紧,高性能分隔器.
研究的目的:
- 提出一个紧的超高频 (UHF) 微条划分器.
- 为了实现宽带波抑制.
- 为了提高性能指标,如回报损失和隔离.
主要方法:
- 嵌入一个组合共振器 (T形共振器 + 合的紧微条共振细胞 - - CCMRCs) 在分隔器分支.
- 用联合共振器取代传统的四分之一波长传输线路.
- 在570MHz的FR4基板上设计和全波电磁模拟.
主要成果:
- 在570MHz时实现了相同的功率分配.
- 返回损失大于39dB,输出端口隔离大于47dB.
- 从1.5GHz到3.5GHz的宽止带,减弱第3至第6波.
- 与传统分隔器相比,大小显著减少 (76%小).
结论:
- 拟议的紧型UHF微条分隔器提供了出色的性能.
- 实现了有效的宽带波抑制.
- 该设计非常适合空间有限的现代无线通信系统.
相关概念视频
Parallel Resonance
666
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:
666
Characteristics of Series Resonant Circuit
722
Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
722
Design Example: Underdamped Parallel RLC Circuit
701
Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...
Starting with a fixed...
701
Design Example
597
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
597
Series Resonance
941
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
941
Design Example: Capacitance Multiplier Circuit
1.6K
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.
1.6K

