Company Filing History:

12 out of 11,277

Electronics and Telecommunications Research Institute

patents

1 out of 2,607

Korea Advanced Institute of Science and Technology

patents

where one patent can have more than one assignee

Years Active: 2006-2011

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8081062 - Transmit/receive antenna system having offset feed points for high isolation (2011-12-20),

2. 8009118 - Open-ended two-strip meander line antenna, RFID tag using the antenna, and antenna impedance matching method thereof (2011-08-30),

3. 7978022 - Cable to waveguide transition apparatus having signal accumulation form of backshort and active phase shifting using the same (2011-07-12),

4. 7933577 - Method and apparatus for sharing portable terminal in CDMA system and mobile RFID system (2011-04-26),

5. 7710274 - Antenna having loop and helical structure and RFID tag using the same (2010-05-04),

6. 7629929 - Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof (2009-12-08),

7. 7545328 - Antenna using inductively coupled feeding method, RFID tag using the same and antenna impedance matching method thereof (2009-06-09),

8. 7505008 - Electrical loop antenna with unidirectional and uniform current radiation source (2009-03-17),

9. 7504998 - PIFA and RFID tag using the same (2009-03-17),

10. 7427955 - Dual polarization antenna and RFID reader employing the same (2008-09-23),

11. 7414583 - PIFA, RFID tag using the same and antenna impedance adjusting method thereof (2008-08-19),

12. 7006044 - Microstrip patch antenna using MEMS technology (2006-02-28),

Title: The Innovations of Won-Kyu Choi

Introduction

Won-Kyu Choi is a prominent inventor based in Gyeonggi-do, South Korea. He has made significant contributions to the field of antenna technology, holding a total of 12 patents. His work focuses on enhancing the performance and efficiency of antenna systems, which are crucial for various communication technologies.

Latest Patents

One of his latest patents is the "Transmit/receive antenna system having offset feed points for high isolation." This innovative antenna system is designed to achieve high isolation between transmission and reception ports. It utilizes quadrature hybrid couplers to ensure that the signals transmitted and received are highly isolated from each other. The system includes a transmission antenna with two feed points for sending signals and a reception antenna with two feed points for receiving signals. The design effectively offsets the signals leaking from the transmission antenna to the reception antenna, enhancing overall performance.

Another notable patent is the "Open-ended two-strip meander line antenna, RFID tag using the antenna, and antenna impedance matching method thereof." This invention features a radiating strip line that determines the resonant frequency of the antenna and a feeding strip line that provides a radio frequency (RF) signal. The ends of both the radiating and feeding strip lines are open, which contributes to the antenna's unique design and functionality.

Career Highlights

Throughout his career, Won-Kyu Choi has worked with esteemed organizations such as the Electronics and Telecommunications Research Institute and the Korea Advanced Institute of Science and Technology. His experience in these institutions has allowed him to develop cutting-edge technologies and contribute to advancements in the field of telecommunications.

Collaborations

He has collaborated with notable colleagues, including Cheol-Sig Pyo and Hae-Won Son. Their combined expertise has fostered innovation and progress in antenna technology.

Conclusion

Won-Kyu Choi's contributions to antenna technology through his numerous patents highlight his role as a leading inventor in the field. His innovative designs and collaborative efforts continue to influence advancements in communication systems.

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