According to statistics news on March 17th., AT&T, Verizon, T-Mobile US and other US companies have spent about a total of $117 billion (US dollars) in the purchase of 5G mid-band spectrum in the past 12 months.These include:1. Last year, the purchase of C-band 280 MHz spectrum totaled about $81 billion (US dollars) ,the FCC’s largest ever spectrum auction, after which AT&T and Verizon eac……
What is LoRa®?LoRa uses unlicensed sub-GHz wireless bands such as 433 MHz (Europe), 868 MHz (Europe) and 915 MHz (North America). It allows long distance transmission (10km+ in suburbs, up to 2km in urban areas) and still maintains extremely low power consumption (sub-uA).There are two expressions of this technology: LoRa, physical layer; LoRaWAN (Long Range Wide Area Network), upper layer. &……
On March 17, Laure de La Raudière, president of the French Communications Regulator ARCEP, and two French government ministers (Agnès Pannier-Runacher, the Minister of Industry and Cédric O, the Secretary of State for Digital Transformation and Electronic Communications) announced that the 3.8GHz-4.0GHz frequency band would be established as the frequency of industrial 5G private network. French c……
011800（B3）Frequency（1200~1950MHz）, 4G important frequency.It is the anchor frequency bands for 5G NSA networking，bandwidth 25MHz.02900（B8） Frequency（3450~3800MHz）, 4G base band，bandwidth 12MHz； 03A-band (B34) frequency (36200~36350MHz), bandwidth 15MHz;04D-band (B38) frequency(37750~38250MHz), outdoor macro station in the main urban area, global common frequency band05F-band (B39) frequency (……
Definition:A Diplexer(duplexer) is a three-port passive radio frequency device that is a very common in communications, radar, and other sensing applications. Diplexer(duplexer) consists of two filters of different frequencies connected to an antenna. By using the frequency division function of high-pass, low-pass or band-pass filters, the same antenna or transmission line can use two signal ……
Definition: The Ka-band with frequency range 26.5 ~ 40GHz, is part of the microwave band of the electromagnetic spectrum. In other words, the band is directly above the K-band.The Ka-band is also known as the 30/20 GHz band and is commonly used for satellite communications.26.5~40GHz coaxial circulatorThe disadvantage of the Ka-band is that the rain attenuation is relatively high, and the requirem……
