Dajun Cheng

Title: Dajun Cheng: Innovator in Radio Frequency Technologies

Introduction

Dajun Cheng is a prominent inventor based in Kanata, Canada. He has made significant contributions to the field of radio frequency (RF) technologies, holding a total of 5 patents. His work focuses on enhancing communication systems through innovative filtering techniques and interference mitigation strategies.

Latest Patents

One of Dajun Cheng's latest patents is the "Integrated multiple-input multiple-output multi-band bandpass filter bank." This invention describes techniques for multiband RF signal communications using integrated MIMO multiband bandpass filter banks based on concentric dielectric ring resonators. The integrated MIMO multiband bandpass filter bank includes multiple transmission line structures for transmitting and receiving RF signals, along with several ring resonators of varying sizes and resonant frequencies. Each ring resonator is configured as a single-band bandpass filter, allowing specific bandpass signals to pass through. This technology enables the transmission and reception of multiple desired bandpass signals while effectively rejecting out-of-band spurious emissions and interference.

Another notable patent addresses "Interference mitigation during simultaneous operation of multiple radios in a wireless device." This invention discloses apparatus and methods for adaptive frequency channel allocation adjustment to reduce in-device interference during the coexistence of multiple RF operations. The device utilizes pre-defined channel conflict tables stored in memory to prioritize one of the multiple RF operations. It requests the cellular base transceiver station or host access point to allocate a non-conflicted frequency channel, ensuring efficient communication even when channel conflicts arise.

Career Highlights

Dajun Cheng has worked with notable companies such as ZTE Canada Inc. and ZTE Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in RF technologies.

Collaborations

Dajun Cheng has collaborated with talented individuals in his field, including Hongwei Zhang and Tao Jiang. Their combined expertise has contributed to the advancement of technologies in radio frequency communications.

Conclusion

Dajun Cheng is a distinguished inventor whose work in radio frequency technologies has led to significant advancements in communication systems. His innovative patents and collaborations highlight his commitment to improving RF signal processing and interference mitigation.