A TX RX Multicoupler is a device used to couple the transmitter and receiver to an antenna. It transmit signals with high port-to-port isolation. A typical multicoupler consists of filters/duplexers, a Low Noise Amplifier and a power divider. It is an important part of a telecommunication system.When multiple receivers or transmitters or radio stations share an antenna, in order to avoid mutual in……

On November 10, China Telecom released own-developed 5G satellite dual-mode mobile phone, Tianyi Platinum S9, was officially released at the 2023 Digital Technology Ecology Exhibition. Satellite communications may show two technological evolution routes:At the terminal level, direct connection to satellites has gradually evolved from dedicated terminals to smartphones.At the satellite equipme……

The RF front-end is a vital part of wireless communication equipment, and it is the basic component for converting wireless electromagnetic wave signals and binary digital signals into each other.The Structure of the RF Front-EndRF front-ends can be divided into transmitter (TX) and receiver (RX) based on function.According to the components, it can be divided into power amplifiers (PA), low-frequ……

A coaxial attenuator is an energy-degrading RF/microwave component that contains resistive materials inside. In addition to the commonly used resistive fixed attenuators, there are also electronically controlled fast-adjustment attenuators.Attenuators are widely used in a variety of applications where power level adjustment is required. The basic materials that make up a coaxial attenuator ar……

Lumped-parameter design and Distributed-parameter design are common methods of radio frequency circuit design. This article will introduce the characteristics and differences between the two briefly. Feature summaryLumped circuit theory: circuit size is much smaller than the wavelength.Distributed Circuit Theory: circuit size is comparable to wavelength. Lumped parameter circuitLumped pa……

The Q band is a range of frequencies contained in the microwave region of the electromagnetic spectrum. Common usage places this range between 33 and 50 GHz, but it may vary in term of sourcing. The Q band is in the EHF range of the radio spectrum. The Q band is mainly used for satellite communications, terrestrial microwave communications and for radio astronomy studies such as the QUIET tel……