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Method and device for correcting unmatching of same phase/orthogonal signals in communication circuit

A communication circuit, quadrature signal technology, applied in the direction of shaping network in transmitter/receiver, baseband system components, etc., can solve problems such as frequency correlation mismatch

Active Publication Date: 2015-01-28
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to solve the problem of frequency dependent mismatch between in-phase / quadrature-phase paths

Method used

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  • Method and device for correcting unmatching of same phase/orthogonal signals in communication circuit
  • Method and device for correcting unmatching of same phase/orthogonal signals in communication circuit
  • Method and device for correcting unmatching of same phase/orthogonal signals in communication circuit

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Embodiment Construction

[0037] Certain terms are used throughout the specification and following claims to refer to particular components. Those of ordinary skill in the art should understand that hardware manufacturers may use different terms to refer to the same component. This description and the following claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification and the following claims is an open term, so it should be interpreted as "including but not limited to".

[0038] In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection m...

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Abstract

The invention provides a method and device for correcting the unmatching of same phase / orthogonal signals in a communication circuit, which relate to a method and a relevant device for correcting the unmatching between the same phase / orthogonal signals between the communication circuits in the communication circuit. The same phase test signal and the orthogonal test signal with different frequency contents are utilized to correct the unmatching of the signals of the relevant frequency in the communication circuit.

Description

technical field [0001] The present invention relates to wireless communication, and more particularly to a method and related apparatus for correcting the mismatch between in-phase and quadrature signals in a direct up-conversion transmitter. Background technique [0002] In wireless communication technology, a communication circuit (such as a transmitter or receiver) is used to modulate the information to be transmitted with the carrier, and transmit it using the antenna, or demodulate the signal received from the antenna to Read the information in it. Traditional transmitters include many different architectures, and one of the common architectures is a direct up-conversion transmitter (direct up-conversion transmitter). For a simple functional block diagram of this transmitter, please refer to figure 1 . As shown in the figure, the direct up-conversion transmitter 100 has an in-phase channel 110 (In-phase channel) and a quadrature phase channel 120 (Quadrature channel)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02
Inventor 苏慬徐宏达
Owner REALTEK SEMICON CORP
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