An integrated wireless receiver and a wireless receiving method thereof

Abstract

A wireless receiver and a wireless receiving method are provided wherein a frequency of a radio frequency (RF) is down-converted into a frequency of a substantially zero intermediate frequency (IF) signal or a substantially low IF signal. The down-converted signal may be filtered by an integrated filter having a low quality factor and then up-converted again into a particular IF signal, thereby integrating an external element. For example, a receiving device may receive a RF signal in a required band. A frequency down-converting device may down-convert a frequency so that a center frequency of the RF signal becomes zero. A channel select filtering device may select a required channel from the signals whose frequency is down-converted. An IF signal converting device may up-convert a frequency of the channel selected signal into a required IF. An IF processing device may extract a baseband signal after the converted IF signal is inputted and processed. An amplifying device may amplify a signal with a gain required in a process of converting a frequency.

Description

[0001] This patent application claims priority from Korean Patent Application No. 10-2004-0095374 filed on November 19, 2004, the disclosure of which is incorporated herein by reference. technical field [0002] Embodiments of the present invention may relate to a wireless receiver and a wireless receiving method thereof. More specifically, embodiments of the present invention may relate to wireless receivers and wireless receiving methods thereof, in which external components can be integrated with substantially zero intermediate frequency (IF) or substantially low IF. This makes the wireless receiver compatible with superheterodyne interfaces. Background technique [0003] FIG. 1 is a schematic diagram of a wireless communication system configured according to an example. Other configurations are also possible. As shown in FIG. 1 , a signal generated by a transmitter 100 may be propagated through the air and transmitted to a receiver 200 . Many other noises and signals ...

AI Technical Summary

Problems solved by technology

However, it may be easy to implement low-pass filters (LPFs) or band-pass filters (BPFs) with low quality factors within a suitable die area, whereas designing filters with high quality factors may be difficult.

In fact, the quality factor of BPFs that may be required for filtering IF signals may be very high, although it is very complex and it is not economical to achieve a figure of merit greater than two (2) with integrated filters

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