Method of controlling time domain transmitting power envelope and its device

A technology for transmitting power and controlling time domain, which is applied in the control of components of amplifying devices, power amplifiers, and amplification control, etc., can solve problems such as complex circuit structures of baseband signal processing methods, save multiplier circuits, and be easy to design. The circuit achieves simple effects

A technology for transmitting power and controlling time domain, which is applied in the control of components of amplifying devices, power amplifiers, and amplification control, etc., can solve problems such as complex circuit structures of baseband signal processing methods, save multiplier circuits, and be easy to design. The circuit achieves simple effects

CN1619978AInactive Publication Date: 2005-05-25SPREADTRUM COMM (SHANGHAI) CO LTD

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  • Method of controlling time domain transmitting power envelope and its device
  • Method of controlling time domain transmitting power envelope and its device
  • Method of controlling time domain transmitting power envelope and its device

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Experimental program
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Embodiment Construction

[0018] see Figure 4 , which is a structural schematic diagram of a device capable of realizing the method. As shown in the figure: it includes a baseband signal generator 1, a single-chip microcomputer 2 and a D / A converter 3 with a control signal memory 21 and a timer 22, wherein the baseband signal generator 1 provides a connection with the baseband signal while generating the baseband signal The synchronization signal corresponding to the baseband signal in time, the synchronization signal is connected to the IO port of the microcontroller 2 or the input of the interrupt signal, the microcontroller 2 detects the rising edge of the synchronization signal by polling or interrupting, and starts the built-in Timer 22, when the next change time is reached, the single-chip microcomputer sends the new control signal output value to the D / A converter 3 through the parallel port, and it is converted into an analog control signal; this process repeats until the last change time, Th...

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Abstract

A method for controlling time domain transmitting power envelop contains directly transmit baseband signal to RF module, transmitting gain control signal wave synchronous with baseband signal in time to obtain control. Said device contains baseband signal generator, monolithic processor having control signal memory and timer, and D/A converter, wherein the memory is prestored change time and value of control signal, the baseband signal generator provides a synchronous signal corresponded with baseband signal at the same time to generate baseband signal, the synchronous signal is connected to IO port of monolithic processor which detects the rising edge of synchronous signal through polling or interruption, acting built in timer, monolithic processor transmits new control signal to D/A converter and converting it into analog control signal, let frequency spectrum of transmitted signal demand the power envelop.

Description

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Claims

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Application Information

Patent Timeline
25 May 2005
Publication
CN1619978A