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Multimode multi-standard mobile phone radio frequency transceiver

A multi-standard and multi-mode technology, applied in the field of mobile communication, can solve the problems of reducing the area and occupation of transceivers, and achieve the effect of reducing hardware overhead, cost and volume

Active Publication Date: 2011-01-05
FENGJIE DONGYANG BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional transceivers, the receive filter and transmit filter occupy 50% of the chip area; this becomes an important problem in reducing the area of ​​the transceiver

Method used

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  • Multimode multi-standard mobile phone radio frequency transceiver
  • Multimode multi-standard mobile phone radio frequency transceiver
  • Multimode multi-standard mobile phone radio frequency transceiver

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0017] like Figure 2~Figure 3 As shown: the present invention includes a low noise amplifier 1, a receiving mixer 2, a voltage controlled oscillator 3, a receiving filter 4, a loop filter 5, an analog-to-digital converter ADC6, a signal processor 7, and a digital-to-analog converter DAC8 , phase monitor 9, frequency divider 10, transmit filter 11, transmit mixer 12, power amplifier 13, off-chip filter 14, antenna switch 15 and switch assembly 16.

[0018] like figure 1 Shown: is the structural schematic diagram of the existing radio transceiver. Described transceiver comprises signal processor 7; The input terminal of described signal processor 7 is connected with receiving filter 4 through analog-to-digital converter DAC6, and described receiving filter 4 is connected with receiving mixer 2; Signal processor 7 The output terminal of is connected to the tra...

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PUM

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Abstract

The invention relates to a multimode multi-standard radio transceiver, which comprises a signal processor, a receiving filter, a receiving mixer, a transmission filter, a transmission mixer and a voltage-controlled oscillator, wherein the voltage-controlled oscillator is connected with a frequency divider and a loop filter; a switch component is connected with the output end of the signal processor, and is connected with a variable filter capacitor C shared by the receiving filter, the loop filter and the transmission filter; the signal processor controls the on-off of the switch component, adjusts a capacitance value of the variable filter capacitor C forming the receiving filter, the loop filter or the transmission filter, matches the loop filter and the receiving filter and demodulates radio frequency signals into corresponding base band signals; and the loop filter is in fit with the transmission filter to convert the base band signals modulated by the signal processor into the corresponding radio frequency signals. The multimode multi-standard radio transceiver has the characteristics of simple structure, chip area reduction, hardware overhead reduction, cost reduction and utilization rate improvement.

Description

technical field [0001] The invention relates to a transceiver, in particular to a multi-mode and multi-standard radio transceiver, which belongs to the technical field of mobile communication. Background technique [0002] With the development of semiconductor and electronic technology, mobile communication technology and related equipment have also been widely used. From the first generation of analog mobile communication technology commercialized in the 1980s to the third generation (3G) digital mobile communication technology that has been used on a large scale today, as the core of mobile communication terminal equipment, transceiver structures and related Applications have also developed rapidly, and the fourth generation (4G) digital mobile communication technology has gradually evolved and formed. [0003] Global System for Mobile Communications (GSM, Global System for Mobile Communications, Global System for Mobile Communications) is the mainstream standard in the s...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04W88/06
Inventor 栗星星
Owner FENGJIE DONGYANG BUILDING MATERIALS CO LTD
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