| Citation: |
Ma Heping, Yuan Fang, Shi Yin, Lan Xiaoming, Dai Fa Foster. A low power high linearity baseband for a direct conversation CMMB tuner[J]. Journal of Semiconductors, 2009, 30(6): 065007. doi: 10.1088/1674-4926/30/6/065007
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Ma H P, Yuan F, Shi Y, Lan X M, Dai F F. A low power high linearity baseband for a direct conversation CMMB tuner[J]. J. Semicond., 2009, 30(6): 065007. doi: 10.1088/1674-4926/30/6/065007.
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A low power high linearity baseband for a direct conversation CMMB tuner
DOI: 10.1088/1674-4926/30/6/065007
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Abstract
An analog baseband circuit made in a 0.35-μm SiGe BiCMOS process is presented for China Multi-media Mobile Broadcasting (CMMB) direct conversion receivers. A high linearity 8th-order Chebyshev low pass filter (LPF) with accurate calibration system is used. Measurement results show that the filter provides 0.5-dB pass-band ripple, 4% bandwidth accuracy, and –35-dB attenuation at 6 MHz with a cutoff frequency of 4 MHz. The current steering type variable gain amplifier (VGA) achieves more than 40-dB gain range with excellent temperature compensation. This tuner baseband achieves an OIP3 of 25.5 dBm, dissipates 16.4 mA under a 2.8-V supply and occupies 1.1 mm2 of die size.-
Keywords:
- CMMB
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References
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Proportional views
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