Solid-State Amps Haven't Replaced Tubes in Certain High-Power Microwave Applications

Wednesday ABI Research announced its market research found The Microwave Tube Market is Still Strong at Nearly $1B for 2012 as GaN Continues to be an Outside Threat. The report notes that, “Despite its size, and although these tubes remain essential elements in specialized military, scientific/medical and space communications applications, this market is generally under-reported and poorly understood by those not directly involved in it.” Lance Wilson, research director, commented, “The size of this historic market continues to surprise everyone and its longevity and firm resistance to RF power semiconductor encroachment is as surprising. These specialized vacuum electron devices may at first seem anachronistic, but in some cases there is no other way to generate such high levels of RF power within an acceptably small space. Certain microwave and millimeter wave VEDs can generate megawatts, and it would take tens of thousands of transistors to do that.”

The report notes that a solid state RF semiconductor technology, gallium nitride (GaN) may change the landscape “but has not yet done so to any meaningful scale.”The ABI Research report said, “GaN is advancing steadily and is a technology that should be closely watched, as it will continue to be a threat to some aspects of the microwave and millimeter wave VED marketplace.”

The results are from ABI Research's High-Power RF Active Devices Research Service which includes research reports and market data.

Doug Lung

Doug Lung is one of America's foremost authorities on broadcast RF technology. As vice president of Broadcast Technology for NBCUniversal Local, H. Douglas Lung leads NBC and Telemundo-owned stations’ RF and transmission affairs, including microwave, radars, satellite uplinks, and FCC technical filings. Beginning his career in 1976 at KSCI in Los Angeles, Lung has nearly 50 years of experience in broadcast television engineering. Beginning in 1985, he led the engineering department for what was to become the Telemundo network and station group, assisting in the design, construction and installation of the company’s broadcast and cable facilities. Other projects include work on the launch of Hawaii’s first UHF TV station, the rollout and testing of the ATSC mobile-handheld standard, and software development related to the incentive auction TV spectrum repack.
A longtime columnist for TV Technology, Doug is also a regular contributor to IEEE Broadcast Technology. He is the recipient of the 2023 NAB Television Engineering Award. He also received a Tech Leadership Award from TV Tech publisher Future plc in 2021 and is a member of the IEEE Broadcast Technology Society and the Society of Broadcast Engineers.