Dual-Sided PCB Antenna Module for Multi-Band Radiation
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Solution Overview
Problem
Existing antenna designs for electronic devices face challenges in maximizing the antenna disposition area in fan-out wafer level package (FOWLP) structures, leading to limited radiation performance and restricted space for supporting multiple frequency bands.
Innovation Solution
The proposed solution involves an antenna module with a printed circuit board (PCB) having antennas on opposite surfaces, where the IC chip is covered by an insulation member, and a shielding member is used to shield electromagnetic interferences and dissipate heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the antenna is disposed only in the fan-out area of an FOWLP structure, then the IC chip can be properly packaged, but the antenna disposition area is limited and radiation performance is restricted
Solution Approach 1:
The patent extends the antenna disposition from a two-dimensional plane (fan-out area only) to a three-dimensional structure by placing antennas on both the first surface and second surface of the PCB, utilizing the vertical dimension to increase the effective antenna area without increasing the footprint area
2Area of stationary object
If the antenna is disposed on the top surface of the PCB with IC chip on bottom surface, then the antenna can be implemented in outer area, but a separate PCB is necessary connecting PCB and antenna which increases thickness
Solution Approach 1:
The patent merges the antenna structure with the existing PCB structure by disposing antennas directly on the first and second surfaces of the same PCB that carries the IC chip, eliminating the need for a separate connecting PCB and thereby reducing the overall module thickness
3Adaptability or versatility
If multiple frequency bands are supported, then the communication capability is enhanced, but the antenna design complexity increases
Solution Approach 1:
The patent implements multi-functional antennas that can operate across multiple frequency bands by designing antenna elements with geometries and configurations that support both low frequency and high frequency signals, allowing a single antenna structure to perform multiple communication functions
Data Source
AI summary
An electronic device comprises: a housing including a front plate, a rear plate, and side portions surrounding a space formed by the front plate and the rear plate; a display visible through the front plate; and an antenna module disposed in the space, wherein the antenna module comprises: a printed circuit board (PCB) including a first surface facing a first direction and a second surface facing a second direction opposite to the first direction; at least one first antenna disposed on the first surface of the PCB; an IC chip disposed on the second surface of the PCB; an insulation member comprising an insulating material covering at least a portion of the IC chip; and a second antenna disposed on a surface of the insulation member facing the second direction, wherein the IC chip may be configured to feed the first antenna, the first antenna may be configured to radiate a first signal of a first frequency band, and the second antenna may be configured to radiate a second signal.