公开(公告)号：US20180332545A1

公开(公告)日：2018-11-15

申请号：US15974809

申请日：2018-05-09

Applicant: Khalifa University of Science and Technology

Inventor： Mihai SANDULEANU ,  Shoeb SHAIKH

IPC: H04W52/52 ,  H04W52/42 ,  H04B1/04 ,  H03F3/217

CPC classification number: H04W52/52 ,  H03F1/0227 ,  H03F1/0288 ,  H03F1/0294 ,  H03F3/195 ,  H03F3/2178 ,  H03F3/265 ,  H03F3/45183 ,  H03F3/68 ,  H03F2200/102 ,  H03F2200/111 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/045 ,  H04W52/42

Abstract: A multi-standard transmitter architecture with digitally upconverted intermediate frequency (IF) outphased signals is disclosed. The transmitter architecture includes a Gallium Nitride (GaN) power amplifier (PA) circuit having a Current Mode Class-D (CMCD) configuration. The GaN PA circuit includes a lower switching device electrically coupled to an input to receive an input RF signal and an upper switching device to switchably electrically couple the first switching device to a power supply to drive an antenna circuit based on the input RF signal. Thus, a reconfigurable transmitter architecture is disclosed that utilizes a high-speed Gallium Nitride (GaN) driver to achieve a peak drain efficiency of at least 85% while delivering output power of 10 W at 1 GHz frequency, for example.

公开(公告)号：US20230395960A1

公开(公告)日：2023-12-07

申请号：US18041986

申请日：2021-09-02

Applicant: Khalifa University of Science and Technology

Inventor： Mamady KEBE ,  Baker MOHAMMAD ,  Mihai SANDULEANU

IPC: H01P1/203 ,  H04B1/40

CPC classification number: H01P1/2039 ,  H04B1/40

Abstract: This disclosure describes systems and methods for use with the design and implementation of bandpass filters for millimeter-wave applications. The filters can include an input port for receiving a signal from a signal generator, an output port, and a resonator. The resonator can be coupled between the input port and the output port. The resonator can have a T-shaped design.