3D Non-Planar Antenna Assembly for Compact Wireless Devices

The patent transitions from a traditional planar antenna design to a three-dimensional non-planar ring structure. The radiating element is configured as a non-planar ring that utilizes vertical and lateral dimensions, transforming the antenna from a two-dimensional layout to a three-dimensional structure. This dimensional change allows the antenna to achieve better radiating performance and wider frequency coverage while maintaining a compact form factor suitable for modern wireless communication devices.

The patent incorporates a switching circuit that dynamically adjusts the electrical characteristics of the antenna by connecting different impedance elements based on the operating frequency band. This dynamic reconfiguration allows the antenna to adapt its impedance matching and resonant frequency to optimize performance across multiple frequency bands (LTE-A low, middle, and high bands), resolving the contradiction between compact size and multi-band radiating performance.

The patent implements a dynamic impedance adjustment mechanism using a switching circuit with multiple switching elements. Each switching element corresponds to a specific impedance value, and the switching controller selectively connects appropriate impedance elements based on the desired operating frequency band. This dynamic reconfiguration enables the antenna to maintain optimal impedance matching across LTE-A low, middle, and high frequency bands, achieving wide frequency coverage without excessive structural complexity.

The patent changes the electrical parameters (impedance values) of the antenna system by introducing multiple impedance elements with different values. The switching circuit allows selection among these different impedance parameters to match different frequency bands. This parameter variation approach enables the antenna to adapt to multiple frequency ranges while keeping the physical structure relatively compact and manageable.