Two-Stage Diversity Receiver Switch Power Segmentation

Solution Overview

Problem

Conventional diversity receiver switches in wireless devices are designed with higher power handling capabilities similar to primary transceiver switches, leading to inefficient power use, increased complexity, and unnecessary space usage, as they are not optimized for the lower power requirements of diversity receivers.

Innovation Solution

A diversity receiver switch design with a two-stage configuration, where a first stage switch handles higher power during off-state conditions and a second stage switch handles lower power during on-state conditions, reducing the number of transistors and overall size, and incorporating a single pole single throw or multi-throw configurations for efficient power handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a diversity receiver switch is designed with higher power handling capacity similar to primary transceiver switch, then the switch can handle both transmit power levels and receive power levels, but the device complexity and size increase unnecessarily

Engineering Contradiction:

Improvepower handling capacityVSAvoidswitch complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The switch is divided into two distinct stages: a first stage switch configured to handle higher power levels during transmit conditions, and a second stage switch configured to handle lower power levels during receive conditions. This segmentation allows each stage to be optimized for its specific power range, reducing overall complexity while maintaining reliable power handling across all operating conditions.

Inventive Principle:

Principle #1Segmentation

2Reliability

If a diversity receiver switch is designed with higher power handling capacity similar to primary transceiver switch, then the switch can handle both transmit power levels and receive power levels, but the device size increases unnecessarily

Engineering Contradiction:

Improvepower handling capacityVSAvoidswitch area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The switch is divided into two distinct stages: a first stage switch configured to handle higher power levels during transmit conditions, and a second stage switch configured to handle lower power levels during receive conditions. This segmentation allows each stage to be optimized for its specific power range, reducing overall complexity while maintaining reliable power handling across all operating conditions.

Inventive Principle:

Principle #1Segmentation

3Reliability

If a diversity receiver switch is designed with higher power handling capacity similar to primary transceiver switch, then the switch can handle both transmit power levels and receive power levels, but power usage becomes inefficient

Engineering Contradiction:

Improvepower handling capacityVSAvoidpower usage efficiency

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Each stage of the switch is designed with different power handling characteristics matched to its specific function: the first stage handles high power during transmit, while the second stage handles low power during receive. This local optimization ensures that power handling capacity is efficiently matched to actual operational requirements at each stage, eliminating waste from oversized power handling in the diversity receiver path.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9379802B2Radio frequency switch for diversity receiver

Publication Date: 2016.06.28 QUALCOMM INC

AI summary

A diversity receiver switch includes at least one second stage switch configured to communicate with a transceiver. The diversity receiver switch may also include at least one first stage switch coupled between a diversity receiver antenna and the second stage switch(es). The first stage switch(es) may be configured to handle a different amount of power than the second stage switch(es). The diversity receiver switch may include a bank of second stage switches configured to communicate with a transceiver. A first stage switch may be configured to handle more power than each switch in the bank of second stage switches. Alternatively, the diversity receiver switch include a bank of first stage switches coupled between the diversity receiver antenna and a second stage switch. The second stage switch may be configured to handle more power than each of the first stage switches.