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A system and method for calibrating a radio frequency transceiver

A technology for calibrating radio frequency, radio frequency transceiver, applied in the field of radio frequency calibration, can solve the problem of IQ mismatch of transmit channel and receive channel, carrier leakage and so on

Active Publication Date: 2019-02-05
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to reasons such as manufacturing cost, process and power consumption, the local oscillator (LO, Local Oscillator) in the radio frequency transceiver cannot ideally achieve the signal amplitude equal to the signal amplitude of the two paths, and the signal of the phase and the quadrature path Completely orthogonal, therefore, there will be IQ mismatch phenomenon in the transmitting channel and receiving channel; in addition, due to the DC offset of the transmitting channel and the coupling effect of the integrated circuit, etc., at the local oscillator frequency of the local oscillator, the RF transceiver will be in the Carrier leakage occurs in the transmit channel

Method used

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  • A system and method for calibrating a radio frequency transceiver
  • A system and method for calibrating a radio frequency transceiver
  • A system and method for calibrating a radio frequency transceiver

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0066] In order to be able to correct the carrier leakage phenomenon of the transmission channel and the IQ mismatch phenomenon of the transmission and reception channels at the same time, the system for calibrating the radio frequency transceiver proposed in the embodiment of the present invention can be applied to the currently commonly used radio frequency transceiver system, so that the present invention can be corrected The specific technical solutions of the embodiments are described in detail.

[0067] figure 1 It is a radio frequency transceiver system 10 commonly used at present, and is used for IQ modulation and demodulation of various wireless communication systems. Such as figure 1 As shown, the radio frequency transceiver system 10 may include a transmitting cha...

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Abstract

The embodiment of the present invention discloses a system and method for calibrating a radio frequency transceiver. The system may include: a transmitting channel compensator, a receiving channel compensator, an estimator, a memory and a translation mixer.

Description

technical field [0001] The invention relates to the field of radio frequency calibration, in particular to a system and method for calibrating a radio frequency transceiver. Background technique [0002] At present, radio frequency transceivers widely used in wireless communication systems generally have two signal paths in the transmitting channel and the receiving channel: an in-phase (I, In-phase) path and a quadrature (Q, Quadrature) path. However, due to reasons such as manufacturing cost, process and power consumption, the local oscillator (LO, Local Oscillator) in the radio frequency transceiver cannot ideally achieve the signal amplitude equal to the signal amplitude of the two paths, and the signal of the phase and the quadrature path Completely orthogonal, therefore, there will be IQ mismatch phenomenon in the transmitting channel and receiving channel; in addition, due to the DC offset of the transmitting channel and the coupling effect of the integrated circuit, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/06H04L27/38
CPCH04L25/06H04B1/525H04L1/206H04B1/38H04B17/14H04B1/52
Inventor 王勇涛谢豪律王倬遥
Owner SANECHIPS TECH CO LTD