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Frontier Silicon rolls out 'smallest RF tuner for T-DMB'

Posted: 22 Feb 2005 ?? ?Print Version ?Bookmark and Share

Keywords:frontier silicon? tuner chip? digital multimedia broadcasting? t-dmb? apollo?

Frontier Silicon launched its first tuner chip for digital multimedia broadcasting (T-DMB) applications. According to the company, their new Apollo chip enables them to offer a complete low-cost solution for audio, video and data broadcasting to mobile phones and other mobile devices when combined with their Kino T-DMB digital baseband processor.

Measuring 5(L)-by-5(W)-by-0.9(H)mm, Apollo is touted to be the smallest RF tuner for T-DMB currently available. It offers a power consumption better than 80mW, which is almost one-quarter of competing receivers, said Frontier Silicon. In addition, a power save feature in Apollo allows the receiver to be put in standby, bringing the average power consumption down to 50mW.

In designing Apollo, the company's design engineers overcame the major challenge in designing a zero IF receiverDC offsets. A near-zero IF architecture combines the robust reception of traditional superheterodyne receivers with the high integration of direct conversion zero IF, explained the company. Apollo has three separate low noise amplifiers at its front end for L band, band 3 and band 2. These are multiplexed into a common automatic gain control (AGC) amplifier and mixers to produce a near-zero IF of 1.024MHz. After on-chip filtering and up-conversion to the industry standard 2.048MHz IF, the signal amplitude is adjusted and fed to the baseband chip.

Manufactured in a 0.35?m SiGe BiCMOS process, the new tuner chip gives low power consumption over the -45C to 85C temperature range.




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