Configurable multimode radio-frequency front end module and mobile terminal having same

A radio frequency front-end and multi-mode technology, applied in the field of radio frequency, can solve the problems of large occupied area and achieve the effects of cost reduction, high integration and volume reduction

Active Publication Date: 2010-12-01
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defect that the existing radio frequency front-end module occupies a large area, the present invention provides a configurable multi-mode radio frequency front-end module and a mobile terminal with the module

Method used

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  • Configurable multimode radio-frequency front end module and mobile terminal having same
  • Configurable multimode radio-frequency front end module and mobile terminal having same
  • Configurable multimode radio-frequency front end module and mobile terminal having same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The technical scheme proposed by the present invention is as figure 2 shown. Low frequency radio frequency power amplifier die 101, its input signal RF IN1 Can be GSM low-band signal (GSM850, EGSM), also can be the low-band signal (Band V, Band VI, Band VIII) of WCDMA; High-band RF power amplifier die 102, its input signal RF IN2 It can be a GSM high-band signal (DCS, PCS), or a WCDMA high-band signal (Band I, Band II, Band III).

[0061] The output of the low frequency radio frequency power amplifier die 101 is connected to the inductor L 1 One end of the inductance L 1 The other end of each is connected to the capacitor C 1 One end of the single-pole nine-throw radio frequency antenna switch 109 GSML throw and strobe switch SW 1 One end of the capacitor C 1 Connect the other end to ground. Strobe switch SW 1 The other end is connected to the inductor L 3 One end of the inductance L 3 The other end of each is connected to the capacitor C 3 One end and the f...

Embodiment 2

[0098] The second embodiment of the technical solution proposed by the present invention is as image 3 As shown, the scheme can support GSM, WCDMA and TD-SCDMA three mobile communication standards at the same time. Low frequency radio frequency power amplifier die 201, its input signal RF IN1 Can be GSM low-band signal (GSM850, EGSM), also can be the low-band signal (Band V, Band VI, Band VIII) of WCDMA; High-band RF power amplifier die 202, its input signal RF IN2 It can be GSM high-band signal (DCS, PCS), or WCDMA high-band signal (Band I, Band II, Band III) or TD-SCDMA signal.

[0099] The output of the low frequency radio frequency power amplifier die 201 is connected to the inductor L 1 One end of the inductance L 1 The other end of each is connected to the capacitor C 1 One end of the single-pole nine-throw radio frequency antenna switch 209 GSML throw and strobe switch SW 1 One end of the capacitor C 1 Connect the other end to ground. Strobe switch SW 1 The oth...

Embodiment 3

[0115] The radio frequency front-end module provided by the present invention can be applied to mobile terminals supporting various communication standards, and can also be applied to dual-mode or multi-mode mobile terminals, such as GSM / WCDMA dual-mode mobile terminals and WCDMA / TD-SCDMA dual-mode mobile terminals. terminal etc.

[0116] Figure 4 A schematic diagram of the structure of the mobile terminal is shown. The mobile terminal includes a baseband control chip 61 , a front-end chip (radio frequency transceiver) 62 , a radio frequency front-end module 63 and an antenna 64 . The baseband control chip 61 is used to synthesize the baseband signal to be transmitted, or decode the received baseband signal; the front-end chip 62 processes the baseband signal transmitted from the baseband control chip 61 to generate a radio frequency signal, and generates The radio frequency signal is sent to the radio frequency front-end module 63, or the radio frequency signal transmitted...

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Abstract

The invention relates to a configurable multimode radio-frequency front end module and a mobile terminal having the same. The configurable multimode radio-frequency front end module comprises a single-pole multi-throw switch, a controller, a low-frequency band radio-frequency power amplifier die, a high-frequency band radio-frequency power amplifier die, a plurality of selector switches and a plurality of output matching networks comprising a plurality of capacitors and inductors, wherein the frequency range of the low-frequency band is 824-915 MHz, and the frequency range of the high-frequency band is 1710-2025 MHz; and the controller is used for controlling the working state of the low-frequency band radio-frequency power amplifier die or the high-frequency band radio-frequency power amplifier die and controlling the single-pole multi-throw switch and the selector switches to select an output matching network corresponding to the low-frequency band radio-frequency power amplifier die or the high-frequency band radio-frequency power amplifier die and transmit low-frequency band signals or high-frequency band signals to an antenna. The invention can reduce the area of a mobile telephone terminal circuit board occupied by the radio-frequency front end module, thereby reducing the volume of the mobile telephone terminal and lowering the cost of the mobile telephone terminal.

Description

technical field [0001] The invention relates to the radio frequency field, in particular to a configurable multi-mode radio frequency front-end module and a mobile terminal with the module. Background technique [0002] In modern wireless communication systems, RF front-end modules are key components for wireless transmission of RF signals. Today, telecom operators have introduced many different wireless communication systems, using different wireless communication standards, and different communication standards require different operating frequencies and operating modes for the communication systems. GSM (Global System for Mobile Communication) as the second generation mobile communication standard has been widely used in the world; WCDMA (Wideband Code Division Multiple Access) and TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) ) as the representative of the third-generation mobile communication standard is being widely deployed around the world. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04W88/06H04B1/401
Inventor 陈俊谢利刚
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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