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GSM power amplification module and mobile terminal

A power amplification module and mobile terminal technology, applied in power amplifiers, telephone communications, electrical components, etc., can solve problems such as inability to support power-free calibration functions, difficulties in PCB wiring, and impact on production progress, so as to save transmission power calibration time, Accurate transmit power and speed up design

Inactive Publication Date: 2011-04-06
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, the prior art has the following two problems: one is that the baseband chip and the PA module are connected by a parallel digital interface, so there are both digital control lines and analog control lines in the connecting line, which causes PCB wiring problems. Difficult; second, the current PA module cannot support the power-free calibration function, which affects the production progress

Method used

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  • GSM power amplification module and mobile terminal
  • GSM power amplification module and mobile terminal
  • GSM power amplification module and mobile terminal

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Embodiment Construction

[0019] Below, the present invention will be described in detail with reference to the accompanying drawings.

[0020] like figure 2 As shown, the present embodiment provides a kind of GSM power amplifying module 20, and GSM power amplifying module 20 is connected with the I / O1-I / O4 port of baseband chip 21 by digital serial interface (SPI high-speed synchronous serial port / I2C) , if the digital serial interface adopts SPI mode, three SPI control lines 211, 212, 213 and one PA enable control line 214 are required; if the I2C interface mode is adopted, two I2C control lines 211, 212 and one PA enable control line are required Control line 214.

[0021] The GSM power amplifying module 20 includes: a control circuit unit 201 , a DAC (digital-to-analog conversion unit) 202 , a GSM power amplifier 203 , an antenna switch 204 , and a storage unit 205 .

[0022] The control circuit unit 201 receives the control signal sent by the baseband chip 21; and then performs corresponding co...

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Abstract

The invention provides a global system for mobile communication (GSM) power amplification module, which comprises a GSM power amplifier, an antenna switch connected at the output end of the amplifier to realize frequency switching, a control circuit unit, a storage unit and a digital-to-analogue conversion unit, wherein the control circuit unit receives control signals through a digital serial interface, searches automatic power control numerical calibration data preset by the storage unit, and sends the searched automatic power control numerical calibration data to the GSM power amplifier; and the control circuit unit realizes frequency selection for the antenna switch and the GSM power amplifier through the control signals. Because the digital serial interface is adopted in the GSM power amplification module, the connection number between the GSM power amplification module and a baseband chip is reduced, routing optimization is not needed during printed circuit board (PCB) routing, and the design speed of PCB routing is quickened; and the storage unit is arranged in the module so as to save the transmitting power calibration time when a mobile phone is produced.

Description

[0001] technical field [0002] The invention relates to the technical field of GSM power amplification, in particular to a GSM power amplification module and a mobile terminal. Background technique [0003] At present, the application in the field of mobile communication is more and more extensive, but as far as the current network environment is concerned, GSM (second generation mobile communication standard) is still the most widely used standard in the field of mobile communication. The vast majority of mobile phones in the domestic market still use GSM as the main application, but GSM PA (Power Amplifier) ​​in GSM mobile phones has been born to the present, and the GSM PA control modules of various GSM mobile phones are even more similar. like figure 1 As shown, the control of the GSM PA in the current GSM mobile phone is mainly completed by the baseband chip 10 and the PA module 12 . Wherein, the baseband chip 10 uses a DAC (digital-to-analog conversion unit) 11 t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H04M1/725H04M1/72409
CPCY02B60/50
Inventor 杨骏
Owner HUIZHOU TCL MOBILE COMM CO LTD