RF PA Mid Chip Integration for Multi-Antenna SRS Switching

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Solution Overview

Problem

The increasing demand for 5G mobile communication technology requires multiple discrete switches in radio-frequency systems for polling transmission among multiple antennas, leading to higher costs and larger substrate area occupancy.

Innovation Solution

A radio-frequency PA Mid device with integrated power amplifier, filtering unit, and multi-channel selection switch, which reduces the need for external switches by integrating these components into a single chip, allowing for efficient polling transmission of SRS among multiple antennas while minimizing substrate area usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple discrete switches are disposed in transmitting paths to support polling transmission among multiple antennas, then the polling transmission function is achieved, but the substrate area occupied and cost increase

Engineering Contradiction:

Improvepolling transmission functionVSAvoidsubstrate area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent integrates multiple switches into a single multi-channel selection switch component. This switch has a first terminal connected to the power amplifier output, multiple second terminals connected to different antenna ports, and can selectively connect to any antenna port based on polling requirements. This merging approach maintains the polling transmission function while significantly reducing the substrate area compared to using multiple discrete switches.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If multiple discrete switches are disposed in transmitting paths to support polling transmission among multiple antennas, then the polling transmission function is achieved, but the cost increases

Engineering Contradiction:

Improvepolling transmission functionVSAvoidcost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

3Area of stationary object

If power amplifier, filtering unit, and multi-channel selection switch are integrated in the same chip, then the integration level increases and substrate area decreases, but the device complexity increases

Engineering Contradiction:

Improvesubstrate areaVSAvoidintegration level

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent integrates the power amplifier, filtering unit, and multi-channel selection switch into a single radio-frequency PA Mid device chip. The power amplifier has its input terminal connected to a transmitting port and output terminal connected to the filtering unit, which in turn connects to the multi-channel selection switch. This hierarchical integration reduces substrate area while managing complexity through structured component arrangement.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated device is divided into distinct functional modules: power amplifier module, filtering unit module, and multi-channel selection switch module. Each module performs a specific function and can be independently designed and optimized, which helps manage the overall device complexity while achieving high integration.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20230093847A1Radio frequency pa mid device, radio frequency transceiving system, and communication apparatus

Publication Date: 2023.03.30 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A radio-frequency PA Mid device has a transmitting port and a plurality of antenna ports, and includes: a power amplifier having an input terminal connected to the transmitting port to perform a power amplification processing on a received radio-frequency signal; a first filtering unit connected to an output terminal of the power amplifier to perform a filtering processing on the received radio-frequency signal; and a multi-channel selection switch including at least one first terminal and a plurality of second terminals. One first terminal is connected to the first filtering unit, and the second terminals are connected to the antenna ports in a one-to-one correspondence to selectively switch on a transmitting path between the transmitting port and any one of the plurality of antenna ports, for transmitting the radio-frequency signal and supporting a function of polling transmission of a Sounding Reference Signal among the plurality of antenna ports.