Cheng-liang Shih

Title: Innovations of Cheng-liang Shih

Introduction

Cheng-liang Shih is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of radio-frequency (RF) systems and integrated antenna devices. With a total of 2 patents, his work showcases innovative approaches to enhancing communication technologies.

Latest Patents

One of Cheng-liang Shih's latest patents is an Arrayed Radio-Frequency (RF) System. This system includes an expandable mother circuit carrier and sub-modules implemented with RF packaged radiation structures. The sub-modules are embedded onto the mother circuit carrier through plug-in interfaces, forming a replaceable and expandable co-structural structure. The mother circuit carrier receives and up-converts an input intermediate-frequency signal, generating first high-frequency signals. The sub-modules are horizontally embedded on the mother circuit carrier, arranged into a one-dimensional or two-dimensional array, and electrically connected to the mother circuit carrier. The RF packaged radiation structures receive first high-frequency signals, emitting first RF signals, and also receive second RF signals to generate second high-frequency signals. The mother circuit carrier down-converts these signals, producing an output intermediate-frequency signal.

Another notable patent is the Integrated Antenna Device. This device comprises a curved-surface transmitting array and an array antenna. The curved-surface transmitting array has multiple focuses to homogenize its radiation gains. The array antenna is positioned between the curved-surface transmitting array and the focuses. Controlled by an active RF module, the array antenna emits the first-order beam and performs beam scanning. The curved-surface transmitting array focuses the first-order beam to create a second-order beam with high gain. The active RF module generates beamforming feed excitation weights, enabling the integrated antenna device to have a beam scanning mechanism. The array antenna can be formed by feeder antennas, and a DSP dynamically groups these antennas to create subarrays, which can generate different first-order beams for multi-point communications.

Career Highlights

Cheng-liang Shih is affiliated with National Taiwan University, where he continues to advance his research and development in innovative technologies. His work has significantly impacted the field of RF systems and antenna design.

Collaborations

Cheng-liang Shih has collaborated with notable colleagues, including Hsi-Tseng Chou and Chih-ta Yen. Their joint efforts contribute to the advancement of technology in their respective