Radio frequency sampling device

A sampling device and radio frequency technology, applied in the field of signal processing, can solve the problems of direct sampling of signals that cannot reach 400MHz, circuit complexity, circuit stability, and low hardware cost, and achieve low hardware cost, high circuit stability, and low complexity Effect

Pending Publication Date: 2018-03-06
北京航宇创通技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the defect that the existing technical solutions cannot directly sample the 400MHz signal, and proposes a new type of radio frequency sampling device, which has the advantages of low circuit complexity, high circuit stability, and low hardware cost.

Method used

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Embodiment Construction

[0025] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0027] Such as figure 1 As shown, the embodiment of the present invention provides a radio frequency sampling device 100, including a radio frequency signal input port 102 and a digital signal outpu...

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Abstract

The invention discloses a radio frequency sampling device, and relates to the technical field of signal processing. The radio frequency sampling device comprises a radio frequency signal input port and a digital signal output port; and a digital AGC, a first amplifier, a band-pass filter, a second amplifier, a Balun transformer and an analogue-digital converter are arranged between the radio frequency signal input port and a digital signal output port. Signals with 400 MHz signal bandwidth in an L waveband can be sampled directly, so that a complex radio frequency analog circuit is avoided, and the hardware cost is reduced, the flexibility of directly processing a high-frequency signal by using software by a backend is improved; the radio frequency sampling device is suitable for a big-bandwidth communication system application; a digital AGC enables the circuit to be simple; and the operation of controlling the signal gain by backend software becomes simpler and more flexibly.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a radio frequency sampling device. Background technique [0002] In the field of L-band (1-2GHz) communication, the RF front-end of the receiver generally adopts an analog multi-stage down-conversion structure, and the design of the mixing circuit is complex, and it is easy to generate false frequencies and introduce phase errors. The radio frequency direct sampling method is to directly digitize the received radio frequency signal and provide it to the subsequent digital circuit for processing. The RF direct sampling technology avoids the mixing of RF signals, completes as many signal processing functions as possible with software, simplifies the system structure, and has the advantages of less required components, low cost, low power consumption, and easy to obtain higher performance. advantage. The patent document with the application number 201320354916.8 ...

Claims

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Application Information

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IPC IPC(8): H04B1/16
CPCH04B1/16
Inventor 谢元斌袁海军张瑞
Owner 北京航宇创通技术股份有限公司
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