Linear Technology Announces New 30 MHz to 1.4 GHz Wideband I/Q Demodulator

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Linear Technology announced its LTC6684 ultra-wide bandwidth direct conversion I/Q demodulator on Monday. The device is capable of operating from 30 MHz to 1.4 GHz and features IIP2 performance of 80 dBm or higher, making it ideal for detecting weaker signals in the presence of much stronger signals. The LTC6684 also includes DC offset cancellation and specifies the phase I/Q phase mismatch at only 0.25 degrees.

The demodulator offers a conversion gain of 5.4 dB and a noise figure of 9.9 dB.


Doug Lung
Doug Lung
Contributor

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.