Signal Processing Circuit for Enhanced Radiation Efficiency
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Summary
Problems
Existing electronic devices face reduced performance due to efficiency losses when parts of the human body, such as the head or hand, come into contact, as the radiator's efficiency is compromised, and variable capacitors struggle to provide sufficient capacitance for effective signal processing across various environments.
Innovation solutions
Incorporating a signal processing circuit with a tuner that includes a variable capacitor and a reactance element connected in series, allowing for selective connection via a switch, which amplifies capacitance and shifts the resonance frequency to a lower band, thereby enhancing radiating performance.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a variable capacitor is used to compensate for efficiency loss in various environments, then radiation efficiency is improved, but the capacitance range is limited and cannot provide sufficient capacitance for low-band resonance
Why choose this principle:
The patent embeds the variable capacitor within a resonant circuit configuration that includes an inductor and switch. This nesting allows the system to leverage the interaction between capacitive and inductive elements to achieve effective capacitance values beyond the physical limits of the variable capacitor alone, resolving the contradiction between limited component range and required performance range.
Principle concept:
If a variable capacitor is used to compensate for efficiency loss in various environments, then radiation efficiency is improved, but the capacitance range is limited and cannot provide sufficient capacitance for low-band resonance
Why choose this principle:
The patent changes the operating parameters of the resonant circuit by adjusting the resonance frequency through the switch-controlled inductor configuration. This allows the same physical capacitor to achieve different effective capacitance values at different frequencies, enabling the system to overcome the fixed capacitance range limitation and achieve both efficiency compensation and low-band resonance capability.
Application Domain
Data Source
AI summary:
Incorporating a signal processing circuit with a tuner that includes a variable capacitor and a reactance element connected in series, allowing for selective connection via a switch, which amplifies capacitance and shifts the resonance frequency to a lower band, thereby enhancing radiating performance.
Abstract
Disclosed is an electronic device including a wireless communication module that transmits or receives a signal, a feed line that delivers a signal between the wireless communication module and a radiator, a tuner including a variable capacitor connected to a ground part, and a reactance element connected between the variable capacitor and the feed line.