Circuit board and electronic equipment
By using a filtering part composed of inductors and capacitors in the circuit board instead of the centralized filter, the problems of high RF front-end design cost and large space occupation are solved, and the cost and space reduction is achieved, while improving the performance and signal transmission efficiency of the RF module.
CN223141914UActive Publication Date: 2025-07-22LENOVO (BEIJING) LTD
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Patent Information
- Application Number
- CN202422115585.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Technical Problem
The existing RF front-end design cost is high and takes up a large space, which has become one of the main factors in the development of 5G/4G projects.
Method used
The first filter part and the second filter part composed of inductor and capacitor are used to replace the concentrated filter, and the filter element is formed by overlapping the inductor and/or capacitor, and the matching impedance is directly adjusted to 50 ohms, reducing peripheral circuits, and reducing cost and space occupation.
Benefits of technology
The cost of filter components and the volume of the circuit board are reduced, the performance and signal transmission efficiency of the RF module are improved, and impedance matching and signal selectivity are optimized.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a circuit board and electronic equipment, and the circuit board comprises a radio frequency module which comprises at least one transmitting branch; the transmitting branch comprises a power amplifier, a first filtering part connected with the power amplifier and a second filtering part connected with the first filtering part, and one end, far away from the first filtering part, of the second filtering part is connected with a radio frequency switch module of the radio frequency module; wherein the first filtering part is composed of at least one inductor and is used for filtering out at least part of harmonic signals in a first signal and outputting a signal of a first frequency band through a fundamental wave signal in the first signal input by the input end of the first filtering part, and the signal of the first frequency band is a low-pass signal; the second filtering part is composed of at least one inductor and at least one capacitor and used for processing the signals of the first frequency band and outputting signals of a second frequency band, and the signals of the second frequency band are band-pass signals.
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