Dual PCB Antenna Module Layout for Lower 5G PA Power
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Solution Overview
Problem
High frequency band signals are greatly attenuated due to their short wavelength and strong straightness, leading to increased size and power consumption in antenna modules, particularly in 5G communication systems, where existing technologies struggle to efficiently manage power amplifiers and heat generation.
Innovation Solution
A portable communication device with a dual antenna module structure, where one antenna module includes a transmission-reception circuit with a power amplifier for transmission and a low noise amplifier for reception, while the other module lacks a power amplifier for transmission but includes a low noise amplifier for reception, optimizing signal amplification and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the number of power amplifiers in the transmission circuit is increased to support high frequency band communication, then the data transmission rate is improved, but the size of the antenna module increases
Solution Approach 1:
The patent combines the transmission circuit and reception circuit onto a single printed circuit board, integrating multiple functions into one module. This merging approach allows the antenna module to support high frequency band communication with multiple power amplifiers while maintaining a compact size, as the integrated design eliminates the need for separate transmission and reception modules.
2Speed
If the number of power amplifiers in the transmission circuit is increased to support high frequency band communication, then the data transmission rate is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic control of power amplifiers by selectively activating only the necessary number of PAs based on current communication requirements. The reception circuit can operate independently without requiring transmission circuit components, allowing the system to power down unused power amplifiers during reception-only modes, thereby reducing overall power consumption while maintaining high data transmission capability when needed.
3Speed
If the number of power amplifiers in the transmission circuit is increased to support high frequency band communication, then the data transmission rate is improved, but heat generation increases
Solution Approach 1:
The patent enables dynamic thermal management through selective activation of power amplifiers. Since the reception circuit operates independently without requiring transmission components, the system can deactivate power amplifiers during reception modes, significantly reducing heat generation. This dynamic on/off control of power amplifiers based on operational mode (transmission vs. reception) allows high data transmission rates when needed while minimizing heat accumulation during normal operation.
4Reliability
If a full dual-antenna system with power amplifiers is implemented for both antennas, then the communication reliability is improved, but the device complexity increases
Solution Approach 1:
The patent implements an asymmetric antenna system where the first antenna is connected to a complete transmission-reception circuit with power amplifiers, while the second antenna is connected only to a reception circuit without power amplifiers. This asymmetric configuration maintains communication reliability through diversity reception (receiving signals via both antennas) while reducing device complexity by eliminating redundant power amplifiers in the second antenna path, as the first antenna handles all transmission requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The dual antenna module design enhances signal amplification and reduces power consumption, enabling efficient high frequency band communication while minimizing heat generation and module size, thereby improving the performance and efficiency of 5G communication devices.
Implementation Method 1
a PA for amplifying a signal to be transmitted through the first antenna
Implementation Method 2
a first low noise amplifier for amplifying a signal received through the first antenna
Implementation Method 3
a second low noise amplifier for amplifying a signal received through the second antenna
Data Source
AI summary
A portable communication device including a processor positioned in a first PCB, a communication circuit; and an antenna module. The antenna module includes a second PCB, an antenna array positioned in the second PCB, wherein the antenna array includes a plurality of antennas, a plurality of PAs, a plurality of LNAs, wherein the plurality of LNAs is greater than the plurality of PAs, a first transmission-reception circuit positioned in the second PCB, and a first reception circuit positioned in the second PCB.