Television receiver including an integrated band selection...

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency

Reexamination Certificate

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Details

C455S285000, C455S302000, C455S266000, C455S340000

Reexamination Certificate

active

10923595

ABSTRACT:
A tuner circuit includes a band selection filter coupled to receive an input RF signal and provide a band selected output signal where the band selection filter includes a bank of band pass filters. Each band pass filter includes an inductor and a variable capacitor forming an LC resonator where the inductor is an integrated planar spiral inductor. The tuner circuit further includes a frequency conversion circuit coupled to receive an input signal corresponding to the band selected output signal and provide a frequency converted output signal having a predetermined frequency. The integrated planar spiral inductor can be formed using a single metal spiral or multiple metal spirals. In a multi-spiral structure, a first metal spiral having an inward spiral pattern and a second metal spiral having an outward spiral pattern to form an inductor with large inductance, low series resistance and high Q values, even at low frequency.

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International Search Report, 16 pages.
Joachim N. Burghartz et al., “Multilevel-Spiral Inductors Using VLSI Interconnect Technology,” IEEE Electron Device Letters, vol. 17, No. 9, Sep. 1996, pp. 428-430.
Kirk B. Ashby, et al., “High Q Inductors for Wireless Applications in a Complementary Silicon Bipolar Process,” IEEE Journal of Solid Circuits, vol. 31, No. 1., Jan. 1996, pp. 4-9.

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