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A high spurious free dynamic range signal receiving device and method

A signal receiving device and technology of dynamic range, applied in the field of communication, can solve the problem of deteriorating the SFDR value of the receiver, and achieve the effect of suppressing nonlinear spurs and facilitating upgrading and transformation

Active Publication Date: 2021-02-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When a large signal enters the receiver, it will saturate the analog-to-digital converter in the receiver, thereby generating nonlinear spurs and deteriorating the SFDR value of the receiver

Method used

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  • A high spurious free dynamic range signal receiving device and method
  • A high spurious free dynamic range signal receiving device and method
  • A high spurious free dynamic range signal receiving device and method

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Embodiment Construction

[0047]The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0048] Such as figure 2 As shown, a signal receiving device with a high spurious free dynamic range includes a first receiving antenna 1, a second receiving antenna 5, a third receiving antenna 12, a first mixer 2, a second mixer 7, a first Three mixers 13, a local oscillator 10, a first phase-locked loop 9, a second phase-locked loop 11 and an SFDR correction unit 4;

[0049] The output end of the first receiving antenna 1 is connected to the first input end of the first mixer 2; the output end of the second receiving antenna 5 is connected to the first input end of the second mixer 7 through an attenuator 6 connected; the output end of the third receiving antenna 12 is connected with the first input end of the third mixer 13; the output ...

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Abstract

The invention discloses a signal receiving device and method with a high spurious-free dynamic range, comprising a first receiving antenna (1), a second receiving antenna (5), a third receiving antenna (12), an attenuator (6), The first mixer (2), the second mixer (7), the third mixer (13), the first analog-to-digital converter (3), the second analog-to-digital converter (8), the third analog A digital converter (14), a local oscillator (10), a first phase-locked loop (9), a second phase-locked loop (11) and an SFDR correction unit (4). The invention can effectively suppress the nonlinear stray generated by the analog-to-digital converter in the digital domain. And it does not need to greatly modify the radio frequency front-end circuit, which is convenient for upgrading and reforming the existing receiver.

Description

technical field [0001] The invention relates to the communication field, in particular to a signal receiving device and method with a high spurious-free dynamic range. Background technique [0002] Spurious-Free Dynamic Range (SFDR) is defined as: the ratio of the power value of the largest signal in the spectrum to the power value of the largest spur, such as figure 1 shown. [0003] Depend on figure 1 It can be seen that the power of the small signal is similar to the power of the spur, and the frequency position of the spur is not fixed, so that the user cannot correctly distinguish the small signal and the spur from the spectrum. In order to solve the above problems, the power value of the largest spur is usually used as the signal judgment threshold in engineering, and only the components with a power value greater than the threshold in the spectrum are considered to be signals, while the rest are spurs. Therefore, the maximum spurious power value determines the mini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/12
CPCH04B1/12
Inventor 徐强霍胥男邵猛刘颖唐友喜
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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