Radiofrequency filter switching system for GPIB (general purpose interface bus) command control

A technology of radio frequency filter and switching system, which is applied in the field of electronic technology/communication, and can solve problems such as poor filtering effect, measurement error, and influence on the accuracy of test results, and achieve poor controllability of design, improvement of real-time performance, and delay small effect

Active Publication Date: 2013-08-07
北京众谱达科技有限公司
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Problems solved by technology

If the test link is manually loaded, measurement errors will be introduced, which will affect the accuracy of the test results, and the filtering effect of the existing technology is not good

Method used

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  • Radiofrequency filter switching system for GPIB (general purpose interface bus) command control
  • Radiofrequency filter switching system for GPIB (general purpose interface bus) command control
  • Radiofrequency filter switching system for GPIB (general purpose interface bus) command control

Examples

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Embodiment Construction

[0013] A GPIB command-controlled RF filter switching system, such as figure 1 As shown, it consists of central processing unit TMS320F2808, GPIB bus, 2-stage coaxial switch, first filter, second filter, third filter, fourth filter, fifth filter and sixth filter, among which , the microprocessor TMS320F2808 is used to control the opening and closing of the 2-stage coaxial switch through the GPIB bus, and the detected signal outputs the specified signal after passing through the 6-way filter;

[0014] The first filter is a 1.6GHz high-pass filter, which mainly completes the filtering of signals below 1.60GHz, and keeps signals above 1.60GHz to pass the test link smoothly; the second filter is a 2.4GHz high-pass filter, mainly completes the filtering of 2.40GHz The following signals are filtered, and the signals above 2.40GHz are retained to pass the test link; the third filter is a 3.2GHz high-pass filter, which mainly completes the filtering of signals below 3.20GHz, and the si...

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Abstract

A radiofrequency filter switching system for GPIB (general purpose interface bus) command control comprises a central processing unit TMS320F2808, a GPIB, a two-level coaxial switch, a first filter, a second filter, a third filter, a fourth filter, a fifth filter and a sixth filter. After detected signals pass the filters, on and off of the coaxial switch are controlled to filter the detected signals through the GPIB according to GPIB commands designed in the central processing unit TMS320F2808.

Description

technical field [0001] The invention belongs to the field of electronic technology / communication, and relates to a radio frequency filter switching system controlled by a central processor TMS320F2808 through GPIB commands, which is used for filtering the detected signals in the approval radiation disturbance and radiation spurious test system, and is especially suitable for approval Radiation spurious wireless terminal radio frequency index test and the construction of an integrated test system. Background technique [0002] Conventional terminal radio frequency automatic test system refers to the automatic test system that adopts computer control to automatically complete call establishment, link switching, signal measurement, data calculation and processing, and output test results. It is mainly used in wireless terminal radio frequency index test and integrated test system construction , including TD-SCDMA, GSM, WLAN, WCDMA, CDMA and Bluetooth wireless terminal radio fre...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04B17/00H03H17/06H03H21/00
Inventor 毕景姣
Owner 北京众谱达科技有限公司
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