Patent ID: 7002639
Filing Date: 2006-02-21
Classification: H03J

Abstract:
1. A dual digital television tuner comprising: first and second direct conversion circuits, each having a pair of mixers and a local oscillator, in which a digital television signal is input to the pair of mixers, which directly output baseband signals, wherein the first direct conversion circuit comprises one of a frequency divider and a multiplier, each of the pair of mixers, the local oscillator, the frequency divider, and the multiplier is constituted by a balanced circuit, an oscillation signal of the local oscillator in the first direct conversion circuit is input to the pair of mixers of the first direct conversion circuit through the frequency divider or the multiplier, and wherein the oscillation frequency band of the local oscillator in the first direct conversion circuit does not overlap the oscillation frequency band of the local oscillator in the second direct conversion circuit.