POI is the abbreviation of POINT OF INTERFACE, that is, a multi-system integration platform. It is mainly used for multi-band and multi-signal combination to achieve compatible coverage of multi-network signals. It realizes multi-system, multi-band signal transceiver and cable transmission: and is able to meet the versatile requirements of DTV, 2G, 3G, 4G, 5G (can support LTE MIMO) etc. The……
LC FiltersThe LC filter is a filter composed of appropriate capacitors and inductors. It could be designed to realize low-pass, band-pass, high-pass, and band-stop filters.Pros: Small size, low cost, long parasitic passbandCons: The insertion loss is high, the out-of-band selection performance is poor, and the power capacity is small.In addition, the inductance in the LC filter adopts the method o……
In last article, we introduced the basic concepts of filter. Today, we’d like to discuss further about the RF characteristics of the filter and how it defines its performances.Usually, the RF characteristics used to describe the filter performance are: Orders (Stages) Absolute bandwidth / Relative bandwidth Cutting Frequency VSWR Out-of-Band Rejection Ripple in band Insertion loss Flatness……
The RF filter is one of the essential key components in the radio frequency system. It is mainly used for frequency selection—letting the required frequency signal pass and reflecting the unwanted interference frequency signal.A classic example of a filter application is a receiver or transmitter front end, as shown inFigure 1: Receiver RF Front-EndAs can be seen from Figure 1, the filter is wid……
The 26th edition of the European Microwave Week (EuMW 2023) will come to Berlin to continue the annual series of highly successful microwave events that started back in 1998. EuMW 2023 comprises three co-located conferences: The European Microwave Conference (EuMC) The European Microwave Integrated Circuits Conference (EuMIC) The European Radar Conference (EuRAD) In addition, EuMW 202……
What’s is NTN?NTN：Non-Terrestrial NetworksNTN has become a general term for any network involving non-ground flying objects.NTNs include Satellite Communication Networks, High Altitude Platform Systems (HAPS) and Air-to-ground networks, as shown in the figure below. 1.1 Satellite Communication NetworksSatellite Communication Networks is an airborne platform include: LEO(Low Earth Orbiting)、ME……
