![](/static/img/35.png)
Power Amplifier
High Intensity Radiation Field (HIRF) system
Electronic warfare simulation system
Intermodulation test system
Rf matrix system
Microwave active module
Passive device
Product Center
EMC switching matrix
EMC switching matrix
Technical principle
Basic principle:
Rf (or microwave) signals have different switching considerations than DC or low-frequency AC signals, including insertion loss, crosstalk, transmission delay, and unterminated stub lines. Therefore, the switching configuration of the RF signal is designed to minimize signal loss and maintain the characteristic impedance through the system. SPnT, cascade, tree, or matrix switches can be used for microwave signal routing.
Expansion switch configuration
Multiplex (two-layer tree switch)
Single channel blocking matrix
Key indicator:
Some key electrical specifications to consider when selecting an RF switching system include crosstalk (path isolation), insertion loss, voltage standing wave ratio (VSWR), and bandwidth. When designing an RF switching system, other factors that may affect the performance of the switching system include impedance matching, terminating, power transmission, signal filters, phase distortion, and wiring. The use of switches inevitably degrades the performance of the measurement system, so it is important to consider several key parameters that can significantly affect the performance of the system. In the design phase, costs and benefits are often weighed against each other to get the best solution.
sort:
Rf and microwave switch modules can be divided into two categories: electromechanical relay switches and solid-state switches. These switches come in many different forms, from single pole single throw, single pole multiple throw and double pole double throw.
Applications and conventional models
Switch between signal source and power amplifier link in EMC test system:
Switching between power amplifier and antenna link in EMC test system:
Conventional type:
product model |
frequency range |
Channel insertion (dB) |
Port in the wave |
Channel isolation |
power capacity |
Switch life |
NT-3X6NL |
DC-18GHz |
< 1dB |
< 1.3@6GHz < 2.0@40GHz |
> 80dB@6GHz > 50dB@40GHz |
100W@6GHz 50W@40GHz |
Two million times |
NT-4X16NL |
DC-40GHz |
|||||
NT-3X18NL |
DC-40GHz |
|||||
NT-5X20NL |
DC-40GHz |