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Active and Passive Components

Active and Passive Components

2021-03-22

Simply put, devices that require energy (power) power are called active devices, and devices that do not require energy (power) power are passive devices. Active devices are generally used for signal amplification, transformation, etc., and passive devices are used for signal transmission or signal amplification through directionality. Capacitance, resistance, and sense are all passive devices, while ICs and modules are all active devices. (In layman's terms, those that require a power supply to display their characteristics are active components, such as triodes. Those that can display their characteristics without a power supply are called passive components)

What to do if the RF coaxial cable components fail due to excessive output power

What to do if the RF coaxial cable components fail due to excessive output power

2020-07-30

The over-output power stress of RF coaxial cable components is only detected after component failure or failure. Such things are often encountered in telecommunications network and aerospace engineering/defense applications, because the application and exposure of high power levels are considered to consider the performance requirements of this application. RF and microwave heating power levels are high enough to destroy components in the signal path, which can be the result of poor design, material aging/fatigue, or even strategic electronics attacks. RF and microwave heating passive components carry the burden of many design constraints and performance parameters. Depending on the power requirements of the mobile phone application, the requirements for material and design properties can be obvious. In high power communications and radar detection/sustainment applications, performance levels must be accompanied by very high output power levels. Many materials and technologies cannot meet the power level required by these applications, so the components, materials and technologies used must meet these end-oriented application requirements. High-quality RF and microwave heating power is invisible, interesting to test, and can produce incredible heat in a small area. Critical systems that will encounter high-power RF and microwave heating energy must be carefully designed and constructed from multi-potential-level specific components.

What is the main reason for the development of RF coaxial connectors

What is the main reason for the development of RF coaxial connectors

2020-07-16

The RF coaxial connector was mainly developed because of the big station, that is, the fit in the 1960s. At the beginning, the fit did not change and improve a lot, but because of the need, it had to be upgraded and developed. With the rise of millimeter waves, the increase in frequency of use and the miniaturization of military use are all required to meet appropriate use requirements. Millimeter-wave RF coaxial connectors have received a lot of attention and development. At the beginning of the development of suitable application technology, the driving force is to use active devices that generate and amplify signals and passive devices that transmit signals as adjustments. Passive components that transmit millimeter-wave signals mainly include millimeter-wave transmission lines and their connectors that are considered part of the transmission line, as well as other millimeter-wave components. As a millimeter wave transmission line, there are mainly: waveguide, semi-rigid coaxial cable, flexible coaxial cable, microstrip line and millimeter wave coaxial connector as part of the transmission line.

What's in the setting hole of the touch part of the RF coaxial connector

What's in the setting hole of the touch part of the RF coaxial connector

2020-07-16

A radio frequency coaxial connector, including a cover, the upper and lower parts of the cover are provided with a touch part setting hole, the touch part setting hole is fixed and inserted with a touch part, the touch part includes an external electric conductor, the external electric conductor The inner thread of the inner thread is fixed by the conductor and the insulator to fix the inner conductor in the outer conductor. The front end of the touch piece is developed to be plugged with a compatible touch piece, and the rear end of the touch piece is fixedly provided with a sandwich layer A glass sealing member made of glass that cooperates with the outer electrical conductor to form a shielded cavity. A connecting conductor is installed under the glass sealing member. The inner end of the connecting conductor connects with the inner electrical conductor, and the toe of the connecting conductor Used to connect with the power circuit. The back-end development of the contact part of this product is equipped with a glass sealing member that cooperates with the external electrical conductor to form a sealed cavity. The connecting electrical conductor set inside the glass sealing member connects the internal electrical conductor to the power circuit. A bottom-shielded cavity is formed inside the conductor, which maintains excellent magnetic shielding material and airtightness, and reasonably prevents the data signals transmitted in the touch parts from being subjected to external interference signals.