Title :
CMOS tuners for mobile TV
Author :
Vassiliou, Iason ; Vavelidis, Kostis ; Haralabidis, Nikos ; Bouras, Stamatis ; Kavadias, Spyros ; Kokolakis, Ioannis ; Kamoulakos, George ; Kyranas, Aristeidis ; Kapnistis, Charalampos ; Margaras, Michael
Author_Institution :
Broadcom
Abstract :
Digital video reception is emerging as the latest feature toward multimedia-enriched handheld devices. Mobile battery-operated devices require small-size tuners that consume low power and are amenable to single-chip integration with the baseband demodulator. Following an overview of the system and circuit-level implementation challenges of mobile TV standards such as DVB-H and T-DMB, this article presents a dual-band direct conversion tuner for DVB-H. Architecture and circuit trade-offs are discussed, and detailed measurements are presented. The tuner occupies 9.7 mm2 and achieves a 4 dB NF at both UHF and L-band, eliminating the need for an external LNA. By using a fractional-TV synthesizer both 470-890 MHz and 1.4-1.8 GHz bands are supported, while achieving an integrated phase noise of less than -41 dBc. Sixth-order low-pass filters support channel bandwidths from 4 to 10 MHz
Keywords :
CMOS integrated circuits; UHF integrated circuits; demodulators; low-pass filters; mobile television; television reception; 1.4 to 1.8 GHz; 470 to 890 MHz; CMOS tuners; DVB-H; T-DMB; baseband demodulator; channel bandwidths; digital video reception; dual-band direct conversion tuner; fractional-TV synthesizer; mobile TV; multimedia-enriched handheld devices; single-chip integration; sixth-order low-pass filters; Baseband; Demodulation; Digital video broadcasting; Dual band; Handheld computers; Integrated circuit measurements; Mobile TV; Tuned circuits; Tuners; UHF measurements;
Journal_Title :
Communications Magazine, IEEE
DOI :
10.1109/MCOM.2006.273108
