Integrated TDD Amplifier Circuit for LTE and Sub-6 Bands
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Solution Overview
Problem
TDD communication circuits for LTE and Sub6 bands require separate power amps for transmission and reception, increasing the size of the amplifier end and complicating the design of electronic devices.
Innovation Solution
An electronic device incorporating a PA and LNA as a single amplifier block, controlled by a communication processor to adapt to transmission/reception modes and amplification magnification, with a power supply module operating in envelope tracking or average power tracking modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate power amps are used for transmission and reception in TDD communication circuits, then transmission and reception functions are supported, but the size of the amplifier end increases and design complexity increases
Solution Approach 1:
The patent combines separate power amplifiers for transmission and reception into a single integrated amplifier module. The module includes a first amplifier for transmission mode and a second amplifier for reception mode, both within one amplifier block, reducing overall size and structural complexity while maintaining TDD functionality.
Solution Approach 2:
The patent implements dynamic switching between transmission and reception modes using a switch connected to the amplifier module. The switch alternates the amplifier's operation between transmit and receive states, enabling a single amplifier block to perform functions previously requiring separate dedicated amplifiers.
2Reliability
If separate power amps are used for transmission and reception, then signal amplification is ensured, but the number of components increases
Solution Approach 1:
The patent merges multiple amplifier functions into a single amplifier module containing both a first amplifier for transmission and a second amplifier for reception. This integration reduces the total number of discrete amplifier components while ensuring reliable signal amplification for both transmit and receive operations.
3Power
If multiple power supply devices are used for separate amplifiers, then power requirements are met, but power management complexity increases
Solution Approach 1:
The patent employs a single power supply device that serves multiple amplifier functions within the integrated module. The power supply provides necessary power to both the first amplifier for transmission and the second amplifier for reception, eliminating the need for separate power supply devices and reducing power management complexity.
Data Source
AI summary
An electronic device may include a communication processor, a transceiver, an antenna, a power supply module, and a communication circuit. The communication circuit includes an input terminal configured to acquire a signal transmitted from the transceiver, an amplifier module, an output terminal configured to transmit a signal to the transceiver, an antenna terminal connected to the antenna, a first switch connected to the input terminal and the amplifier module, a second switch connected to the amplifier module and the output terminal, and a third switch connected to the first switch, the second switch, and the antenna terminal.