Last year on December 6, the spectrum of 3 big operation business of our country differentiates to had ended. And be in this year, industry letter ministry also decides to extend temporarily fascia, 5G undertakes formally beforehand business is used, and predict business was used 2020. Undoubted the key that this year is 5G year. And the crucial material that GaN of material of the 3rd acting semiconductor regards 5G radical as the station or new vitality of emerge in large numbers.
Did 5G have much key 2019? 5G beforehand commercial a year, base the station will undertake large-scale construction. The letter is built in cast grind in predict in the newspaper, china will be built 2019 open 5G radical to stand left and right sides of 100 thousand station, predicting whole world in 300 thousand ~40 10 thousand stations are controlled. Below such macroscopical target, semiconductor also will welcome new opportunity.
base the construction with station so large-scale need, the spectrum that main reason is 5G is tall, base of the station enclothe corresponding decrescent, opposite at 4G, the construction of 5G needs more small base station ability eliminates blind area. And spectrum serves as rare lack resource, want to raise spectrum utilization rate, main technical way is to increase base the amount of station and antenna, the crucial technology in corresponding 5G should be large-scale antenna array (Massive MIMO) and exceed concentrated group net (UDN)
5G asks taller data transmits rate, the efficiency of catapult can appear the fall of exponential level. It is OK that this kind drops use bag sth resembling a net dogs the technology comes repair, this technology has been in newer 4G / LTE base use in station and beehive phone. Base the bag sth resembling a net in the station dogs need high speed, high power and tall voltage, these use GaN technique talent to come true only. Such as GaN helps force operation business and base the station OEM goal that achieved large-scale MIMO of 5G Sub-6-GHz and MmWave.
GaN can say to be 5G Sub-6-GHz large-scale MIMO base station application offerred numerous advantage: 1, behave below 3.5GHz and above frequency good, advantage of comparative and other product is clear. 2, the character of GaN can power of translate into high output, wide bandwidth and efficient. The average efficiency that the GaN that uses Doherty PA configuration issues in power of 100 W output is achieved 50% to 60% , reduced emissive power comsumption apparently. 3, be in high frequency it is OK that the efficiency that falls with wide bandwidth means large-scale MIMO system more compact. 4, can move reliably below higher working temperature, this means it to be able to use smaller radiator.
According to the data of Strategy Analytics, predicting 5G mobile join will arrive from the 5 million growth 2019 nearly 600 million 2023. So demand still will rise ceaselessly.
When the presiding apparitor of Efficient Power Conversion holds associated author Alex Lidow concurrently to discuss 5G also say: “ base the bag sth resembling a net in the station dogs need high speed, high power and tall voltage, these use GaN technique talent to come true only. Today, this is one of markets with GaN the biggest transistor, will be in hold this one position in the near future. Will be in hold this one position in the near future..
GaN system sale and sale vice-president Larry Spaziani also have similar idea: The power transistor revolution that place of network of the 5G that start requires comes from nitrogen to change gallium.
In the technical level of concerned GaN, company of Japanese much home already was selling 2 ～ underlay of 3 inches of GaN. In GaN extension piece respect, american division acute (the Cree) company, much home company such as British IQE can offer radio frequency parts of an apparatus to use extension of the GaN on SiC underlay piece, in the near future inside the mainstream material that will still be parts of an apparatus of radio frequency of GaN of for military use. The GaN on Si underlay is denotative piece because have higher sexual price,compare, LED be thinkinged reachs one of good technology lines of civil GaN electronic parts, at present 4 ～ the GaN on 6 inches Si underlay is denotative piece had realized a quantity to produce, 8 inches of extension piece already also was reported by orgnaization of much home scientific research and company.
Be in our country at the same time, also formed the extension of hydride gas phase that has own intellectual property (HVPE) technology, realized 2 inches to offer goods; to be in from small lot of underlay of the GaN that prop up GaN denotative respect, grow successfully parts of an apparatus of the GaN HEMT on the underlay of 4 inches of SiC that gives high quality is denotative piece.
Taking more promising market steadily in nowadays GaN, also many participator joined this alignment. Besides silicon radical nitrogen changes the MACOM with gallium cultivated and old territory, still power source of EPC(appropriate general changes a firm) , the newly established company such as GaN System, Transphorm, Navitas, and semiconductor of law of Ying Feiling, Ansenmei, meaning, pine falls and the industry tycoon such as TI also participated in competition.