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Carrier frequency automatized calibration method of chip

A calibration method and chip technology, applied in the direction of correct operation testing, transmission monitoring, electrical components, etc., can solve the problems of unsatisfactory consistency, unfavorable product mass production, poor operability, etc.

Inactive Publication Date: 2008-04-16
深圳市虹远通信有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these correction methods have poor operability and unsatisfactory consistency, which is not conducive to large-scale mass production of products on the production line.

Method used

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  • Carrier frequency automatized calibration method of chip
  • Carrier frequency automatized calibration method of chip

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Experimental program
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Embodiment Construction

[0010] The device connection diagram for implementing the calibration method of the present invention is shown in Figure 1: it is mainly composed of a main control computer, a spectrum analyzer, and a measured module. The main control computer is respectively connected to the spectrum analyzer and the module to be calibrated through the GPIB interface and the RS485 interface, and the calibrated module is composed of a microprocessor (MCU) and a CC1000 chip.

[0011] The main control computer downloads the preset carrier frequency parameters and operation control instructions to the microprocessor (MCU) of the module to be calibrated through the RS485 bus, and the MCU inside the module to be calibrated pre-sets the configuration registers of the CC1000 chip and completes Then start the module, so that CC1000 is in the state of transmitting FSK data. At this time, the spectrum analyzer starts to search for the carrier frequency signal of FSK under the control of the main control...

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Abstract

The invention provides an automatic calibration method of chip carrier frequency. The method comprises the following steps: the configuration register of the chip is processed with presetting by a microprocessor of a calibrated module and the calibrated module is in a working state. A spectrum analyzer searches a carrier signal of the calibrated module under the control of a main control computer and the searched carrier information is returned to the main control computer. The returned carrier information compared with the preset carrier frequency by the main control computer, the parameter of modified carrier frequency is obtained and downloaded again to the calibrated module to be adjusted. The process is executed repeatedly till the carrier frequency point is calibrated. The invention overcomes the deficiencies and the problems for the prior art and provides an efficient, reliable and simple automatic calibration method.

Description

technical field [0001] The invention relates to a chip carrier frequency automatic calibration method, in particular to a CC1000 chip carrier frequency automatic calibration method. Background technique [0002] The CC1000 chip is a programmable, half-duplex UHF single-chip transceiver chip based on Chipcon's SmartRF technology. Its working frequency band can be fixed at 315, 868 and 915MHz, and it can be programmed to work in the range of 300-1000MHz. At the same time, its receiving sensitivity reaches -109dBm, the programmable output power range is -20~10dBm, the FSK (frequency shift keying) modulation data rate is up to 76.8kBaud (baud), and it can work in a low voltage environment of 2.7~3.3V . [0003] In practical applications, due to the comprehensive influence of materials, parasitic parameters, load pull, individual differences, and assembly process, the carrier frequency point of CC1000 will often deviate from the theoretical design value, which will result in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/24H04B17/00H04B17/11H04B17/21
Inventor 王治赫
Owner 深圳市虹远通信有限责任公司