Radio frequency circuits and electronic equipment

A technology of radio frequency circuit and circuit board, which is applied in the field of communication and can solve problems such as increased material cost

Active Publication Date: 2018-12-18
OPPO CHONGQING INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This solution to suppress harmonic signals, on the one hand, will lead to an increase in material costs, and on the other hand, wh...

Method used

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  • Radio frequency circuits and electronic equipment
  • Radio frequency circuits and electronic equipment
  • Radio frequency circuits and electronic equipment

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the application. In addition, the terms "first" and...

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PUM

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Abstract

An embodiment of the present application discloses a radio frequency circuit and an electronic device. The radio frequency circuit comprises a radio frequency transceiver, an antenna, a first switch and a short-circuit branch impedance converter. The RF transceiver is connected with the antenna to form a path, one end of the short-circuit branch impedance converter is connected with the path through the first switch, and the other end of the short-circuit branch impedance converter is directly grounded; wherein the first switch is used for controlling the short-circuit branch impedance converter to enter the working state or to exit the working state; When the first switch is closed, a short-circuit branch impedance converter performs harmonic suppression processing on a first frequency band radio frequency signal transmitted by the radio frequency transceiver, conducts even harmonic signals in the first frequency band radio frequency signal to ground, so that the antenna transmits outa main frequency signal after suppressing the even harmonic signals in the first frequency band radio frequency signal. Thus, even harmonics can be suppressed without increasing the cost of materials.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a radio frequency circuit and electronic equipment. Background technique [0002] With the continuous development of communication technology, the range of communication frequencies that can be used by smart terminals is also becoming wider and wider. However, for all smart terminals, the internal radio frequency system will inevitably generate harmonics of the main frequency signal due to the nonlinearity of active devices. Harmonic signals not only affect the signal quality and transmission efficiency of the smart terminal itself, It will also cause interference to communication equipment in other frequency bands; among all the harmonic signals accompanying the main frequency signal, the second harmonic (even harmonic) often has the largest component and has the greatest impact on the communication system. In this way, how to suppress the harmonic signal o...

Claims

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Application Information

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IPC IPC(8): H04B1/401H04B1/525
CPCH04B1/401H04B1/525
Inventor 张洲川
Owner OPPO CHONGQING INTELLIGENT TECH CO LTD
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