行波管的特点以及应用

Release time:2022-08-17
author:Ameya360
source:网络
reading:3041

  行波管是靠连续调制电子注的速度来实现放大功能的微波电子管。在行波管中,电子注同慢波电路中行进的微波场发生相互作用﹐在长达6~40个波长的慢波电路中电子注连续不断地把动能交给微波信号场﹐从而使信号得到放大。

行波管的特点以及应用

  一、行波管的特点

  行波管的特点是频带宽﹑增益高﹑动态范围大和噪声低。行波管频带宽度(频带高低两端频率之差/中心频率)可达100%以上,增益在25~70分贝范围内﹐低噪声行波管的噪声系数最低可达1~2分贝。

  二、行波管的工作原理

  在行波管中﹐电子注与慢波电路中的微波场发生相互作用。微波场沿著慢波电路向前行进。为了使电子注同微波场产生有效的相互作用,电子的直流运动速度应比沿慢波电路行进的微波场的相位传播速度(相速)略高﹐称为同步条件。输入的微波信号在慢波电路建立起微弱的电磁场。电子注进入慢波电路相互作用区域以後。

       首先受到微波场的速度调制。电子在继续向前运动时逐渐形成密度调制。大部分电子群聚于减速场中,而且电子在减速场滞留时间比较长。因此,电子注动能有一部分转化为微波场的能量,从而使微波信号得到放大。在同步条件下,电子注与行进的微波场的这种相互作用沿著整个慢波电路连续进行。这是行波管与速调管在原理上的根本区别。


("Note: The information presented in this article is gathered from the internet and is provided as a reference for educational purposes. It does not signify the endorsement or standpoint of our website. If you find any content that violates copyright or intellectual property rights, please inform us for prompt removal.")

Online messageinquiry

reading
  • Week of hot material
  • Material in short supply seckilling
model brand Quote
BD71847AMWV-E2 ROHM Semiconductor
RB751G-40T2R ROHM Semiconductor
CDZVT2R20B ROHM Semiconductor
TL431ACLPR Texas Instruments
MC33074DR2G onsemi
model brand To snap up
ESR03EZPJ151 ROHM Semiconductor
STM32F429IGT6 STMicroelectronics
BU33JA2MNVX-CTL ROHM Semiconductor
TPS63050YFFR Texas Instruments
BP3621 ROHM Semiconductor
IPZ40N04S5L4R8ATMA1 Infineon Technologies
Hot labels
ROHM
IC
Averlogic
Intel
Samsung
IoT
AI
Sensor
Chip
About us

Qr code of ameya360 official account

Identify TWO-DIMENSIONAL code, you can pay attention to

AMEYA360 weixin Service Account AMEYA360 weixin Service Account
AMEYA360 mall (www.ameya360.com) was launched in 2011. Now there are more than 3,500 high-quality suppliers, including 6 million product model data, and more than 1 million component stocks for purchase. Products cover MCU+ memory + power chip +IGBT+MOS tube + op amp + RF Bluetooth + sensor + resistor capacitance inductor + connector and other fields. main business of platform covers spot sales of electronic components, BOM distribution and product supporting materials, providing one-stop purchasing and sales services for our customers.

Please enter the verification code in the image below:

verification code