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US 2006/0234667 A1Published application
High-frequency IC and GPS receiver
AssigneeNEC Electronics Corporation
InventorJianqin Wang
Life of this patent
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Abstract
The high-frequency IC according to an embodiment of the invention includes a mixer down-converting the RF signal into an IF signal with a given center frequency lower than that of the RF signal, a first-order low-pass filter with a pass band set narrower than a bandwidth of the IF signal down-converted by the mixer, and an active low-pass filter removing a signal outside the bandwidth of the IF signal.
Claims12
An integrated circuit outputting a digital signal according to a received signal, comprising:
- a mixer down-converting the received signal into an intermediate frequency signal with a center frequency lower than that of the received signal;
- a first filter with a pass bandwidth narrower than a bandwidth of the intermediate frequency signal down-converted by the mixer;
- and
- a second filter removing a signal outside the band of the intermediate frequency signal.
1 more element
A global positioning system receiver comprising:
- a bandpass filter allowing a received radio frequency signal with a specific band to pass through;
- a mixer down-converting the radio frequency signal having passed through the bandpass filter into an intermediate frequency signal;
- a first filter with a pass bandwidth narrower than a bandwidth of the intermediate frequency signal down-converted by the mixer;
- and
- a second filter removing a signal outside the band of intermediate frequency signal.
2 more elements
Dependencies are inferred from the claim text.