Dual-Input RF Power Amplifier Circuit With Phase-Adjusted Signal Splitting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dual-input radio frequency circuits suffer from reduced efficiency between power back-off and high power points, leading to increased energy consumption and high costs due to the need for additional transmit channels and complex signal adjustments, which hinder large-scale application and optimal power amplification.
Innovation Solution
A radio frequency circuit comprising a first circuit that splits and phase-adjusts input signals to optimize their parameters for a secondary power amplifier branch, allowing for flexible adjustment of input signals to achieve maximum efficiency and performance, incorporating a primary power amplifier branch with an outphasing circuit and a secondary power amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a composite radio frequency circuit combining DHT circuit and outphasing circuit is used, then power amplification efficiency between power back-off point and high power point is improved, but the quantity of input signals increases from two to three, making the circuit size excessively large
Solution Approach 1:
The patent combines the DHT circuit and outphasing circuit into a composite radio frequency circuit where the outphasing circuit serves as the primary power amplifier and the DHT circuit provides the secondary power amplifier. This merging allows the circuit to achieve high power amplification efficiency across both power back-off and high power points by utilizing the complementary strengths of both circuit topologies in a unified structure.
Solution Approach 2:
The composite radio frequency circuit is designed to handle multiple input signals (three input signals) simultaneously, making it universally applicable to various power amplification scenarios. The circuit can operate effectively whether receiving two or three input signals, adapting to different operational requirements while maintaining optimal efficiency across the entire power range.
2Loss of energy
If three transmit channels are disposed to provide three input signals to the composite radio frequency circuit, then power amplification efficiency is improved, but the use costs increase and large-scale application is hindered
Solution Approach 1:
The patent employs dynamic signal adjustment mechanisms that allow the composite radio frequency circuit to adaptively optimize its operation based on the actual input signals received. The circuit can dynamically adjust its parameters and operating mode to maintain optimal power amplification efficiency whether receiving two or three input signals, eliminating the need for fixed three-channel configurations and reducing associated costs.
3Device complexity
If signals from two transmit channels are converted into three input signals by splitting or combination, then the quantity of transmit channels is reduced, but at least one input signal cannot be adjusted to expected value, preventing optimal power amplification efficiency
Solution Approach 1:
The patent implements precise parameter adjustment capabilities for each input signal path, allowing independent control of amplitude and phase parameters for all input signals. This enables the circuit to optimize power amplification efficiency by adjusting each signal parameter to its expected value, regardless of whether the signals originate from two or three transmit channels, thereby resolving the contradiction between channel reduction and efficiency maintenance.
Data Source
AI summary
The application provides a radio frequency circuit, including: a first circuit and a second circuit. The first circuit is configured to receive a first signal and a second signal; split the first signal into a third signal and a fourth signal, and split the second signal into a fifth signal and a sixth signal; adjust a phase of the fifth signal to obtain a seventh signal; and combine the seventh signal and the third signal into an eighth signal. The second circuit includes a primary power amplifier branch and a secondary power amplifier branch, and the primary power amplifier branch is configured to process the fourth signal and the sixth signal, and the secondary power amplifier branch is configured to process the eighth signal.