Multi-mode receiver and receiving method of multi-mode receiver
A receiver and receiving circuit technology, applied in speech analysis, instruments, electrical components, etc., can solve problems such as increasing cost and increasing circuit design area, and achieve the effect of reducing the number, reducing the circuit design area, and reducing the cost
Active Publication Date: 2013-02-27
ZTE CORP
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- Abstract
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Problems solved by technology
In this way, for signals of different modes in the same frequency band, the front end of the receiving circuit inside the integrated circuit is reused, which will result in multiple equivalent radio frequency chips in the integrated circuit, which increases the circuit design area and increases the cost.
Method used
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[0039] In order to understand the characteristics and technical contents of the present invention in more detail, the implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the present invention.
[0040] figure 1 It is a schematic diagram of the composition structure of the multimode receiver of the present invention, such as figure 1 As shown, the multimode receiver includes: an antenna system 11, more than one receiving circuit front end 12, an I / Q demodulator 14, and a baseband unit 15; wherein,
[0041] The antenna system 11 is used to receive the signal sent by the base station, and select the corresponding receiving circuit front end 12 to process the signal according to the frequency band of the signal;
[0042] Here, the signal sent by the base station can be a signal of different modes, such as a GSM signal, a ...
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The invention discloses a multi-mode receiver which comprises an antenna system, more than one receiving circuit front end, an I / Q demodulator and a base band unit, wherein the antenna system is used for receiving a base station signal and selecting the receiving circuit front end according to a frequency range of the signal; the receiving circuit front end is used for conducting down-conversion processing on the signal sent by the antenna system and sending the processed signal to the I / Q demodulator; the I / Q demodulator is used for demodulating the signal sent by the receiving circuit front end and sending the demodulated signal to the base band unit; and the base band unit is used for decoding the demodulated signal. The invention further discloses a receiving method of the multi-mode receiver. With the adoption of the multi-mode receiver and the receiving method, one receiving circuit front end can be used for the signals in same frequency range and different modes, so that the quantity of radio frequency chips is reduced, and the cost is lowered.
Description
technical field [0001] The invention relates to the field of multi-mode reception, in particular to a multi-mode receiver and a receiving method thereof. Background technique [0002] With the rapid development of circuit integration technology, radio frequency circuits also tend to be integrated and modularized, which is particularly beneficial to the development and application of miniaturized mobile terminals. At present, the radio frequency circuits of mobile terminals such as mobile phones are composed of radio frequency integrated circuits as the center and peripheral auxiliary and control circuits. The radio frequency integrated circuit is the main part of the radio frequency circuit of the mobile terminal, including the signal receiving circuit and the signal transmitting circuit. Among them, the signal receiving circuit includes antenna, surface acoustic filter (SAW), low noise amplifier (LNA), mixer, intermediate frequency filter and intermediate frequency amplifi...
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Patent Timeline
Login to View More IPC IPC(8): H04B1/18
CPCH04B1/18H04B1/401H04B1/006G10L2015/025H04L25/02H04L27/14H04W88/06
Inventor 刘海广
Owner ZTE CORP