Crystal oscillators, radio frequency modules and electronic equipment
A crystal oscillator and crystal oscillator circuit technology, applied in the field of radio frequency, can solve problems such as clock signal transmission, radio frequency interference, leakage, etc., and achieve the effect of improving communication quality and radio frequency performance indicators
Active Publication Date: 2021-08-17
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Generally, the ground pin of the crystal is connected to the main ground of the PCB through copper skin, which may cause the clock signal generated by the crystal and its frequency multiplied signal to be directly transmitted or leaked to the main ground of the PCB, and coupled to the crystal ground of other chips , generating radio frequency interference and affecting radio performance
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] In order to understand the present application, the present application will be further described with reference to the related drawings. The preferred embodiment of the present application is given in the drawings. However, the present application can be implemented in many different forms, is not limited to the embodiments described herein. Conversely, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thoroughly. Moreover, the term "first", "second" is used only for the purpose of describing, and cannot be understood as an indication or implicit relative importance or implicitting the number of techniques indicated. Thus, features with "first", "second" may be indicated or implicitly including at least one of this feature. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The application relates to a crystal oscillation device, a radio frequency module and electronic equipment. The crystal oscillation device includes: a substrate, including a signal layer and a main ground layer; a crystal oscillator circuit, arranged on the signal layer, and the crystal oscillator circuit includes a crystal, a first capacitor and a second capacitor. A capacitor, wherein the first pin of the crystal is connected to the crystal ground through the first capacitor, the second pin of the crystal is connected to the crystal ground through the second capacitor, and the first capacitor and the second capacitor are used to adjust the frequency offset parameter of the crystal; The filter network is arranged on the signal layer; the filter network includes an input port and an output port, wherein the input port is respectively connected to the crystal ground of the first capacitor and / or the second capacitor, and the output port is connected to the main ground layer through a via hole for filtering In addition to the radio frequency interference signal, the interference conduction path of the interference signal can be cut off, and the interference signal generated by it can be prevented from leaking from the crystal ground to the main layer of the substrate and coupled to the ground of other chips to generate radio frequency interference, which can improve communication quality and radio frequency performance indicators .
Description
Technical field [0001] The present application relates to the field of radio frequency technology, and in particular, to a crystal oscillation device, a radio frequency module, and an electronic device. Background technique [0002] Among the design of the electronic device, the clock signal generated by the crystal in the crystal circuit is generally a very important role as the reference signal of the chip. Generally, the geodeline of the crystal and the PCB main land are connected by copper, and the clock signal generated by the crystal can cause the crystal to directly lead or disclose to the PCB main, and are coupled to the crystal of other chips. Generate radio frequency interference, affecting radio frequency performance. Inventive content [0003] The present application example provides a crystal oscillating device, a radio frequency module, and an electronic device that cut off the interference path of the interference signal to increase radio frequency performance. ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H03H9/56H03H9/19
CPCH03H9/19H03H9/56
Inventor 谭宇翔
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD