SAW Filter and Hybrid Coupler RF Path for High-Power HPUE
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Solution Overview
Problem
Existing high power user equipment (HPUE) devices face inefficiencies, higher costs, and larger form factors due to the use of large ceramic filters and high power amplifiers, which are necessary for transmitting at high power levels like 31 dBm.
Innovation Solution
Implementing acoustic wave filtering using Surface Acoustic Wave (SAW) filters and hybrid couplers to split and combine RF signals, along with cellular power amplifiers, to achieve the required power levels while reducing size, cost, and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If large ceramic filters and high power amplifiers are used for HPUE devices transmitting at 31 dBm, then the required power level is achieved, but the device size, cost, and power consumption increase
Solution Approach 1:
The transmit signal is divided into multiple parallel paths, each containing a power amplifier and filter combination. Multiple lower-power amplifier chains work in parallel to achieve the cumulative high power output, replacing the need for a single large high-power amplifier and reducing overall device size
Solution Approach 2:
Multiple filtered signal paths are combined using a combiner to produce the final high-power output signal. The parallel amplifier chains and their associated filters are merged into a unified output, achieving high power levels through constructive combination of multiple lower-power signals
2Power
If large ceramic filters and high power amplifiers are used for HPUE devices, then the required power level is achieved, but the device cost increases
Solution Approach 1:
The system uses multiple standard-power amplifiers and filters in parallel rather than one custom high-power component. This segmentation allows use of off-the-shelf, lower-cost components that can be mass-produced, reducing overall device cost while achieving the same power output
Solution Approach 2:
The patent employs multiple lower-cost amplifier and filter modules that can be individually replaced or manufactured more economically than a single expensive high-power amplifier assembly, reducing overall system cost and simplifying manufacturing
3Power
If large ceramic filters and high power amplifiers are used for HPUE devices, then the required power level is achieved, but the power consumption increases
Solution Approach 1:
The total power amplification is distributed across multiple parallel amplifier chains, each operating at lower power levels. This segmentation allows each amplifier to operate more efficiently in its optimal range, reducing overall power consumption compared to a single high-power amplifier operating at maximum capacity
Solution Approach 2:
The patent replaces traditional high-power amplifier architecture with a parallel combination of lower-power amplifiers using signal combining techniques. This substitution of the amplification mechanism achieves the same output power with reduced total power consumption and improved efficiency
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 solution enables devices to transmit at high power levels with reduced size, lower power consumption, extended battery life, and lower costs compared to traditional ceramic filter and high-power amplifier designs.
Implementation Method 1
Implementing acoustic wave filtering using Surface Acoustic Wave (SAW) filters
Data Source
AI summary
Aspects of the subject disclosure may include, for example, splitting, by one or more first hybrid couplers, an RF signal obtained from a transmitter or an antenna into a group of RF signals; filtering, by a plurality of SAW filters, the group of RF signals resulting in a group of filtered RF signals; combining, by one or more second hybrid couplers, the group of filtered RF signals into a filtered RF signal; and providing the filtered RF signal to an antenna or a receiver. Other embodiments are disclosed.