Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Jung-Dong Park"'
Publikováno v:
IEEE Access, Vol 11, Pp 138540-138548 (2023)
We report two 275-GHz quadrature receivers (Rx’s) with mixer-first and LNA-first architectures in a 130-nm SiGe BiCMOS process. Both quadrature Rx’s contain I and Q mixers implemented with a modified Gilbert-cell mixer with swapped RF and local o
Externí odkaz:
https://doaj.org/article/87ba8a04f1fb459aa982a06f3af5b1fb
Autor:
Jeong-Moon Song, Jung-Dong Park
Publikováno v:
IEEE Access, Vol 10, Pp 18456-18462 (2022)
In this paper, we present an 8-bit precision passive true-time delay (TTD) operating at 5–11 GHz in 65-nm CMOS technology. To achieve a precision time delay control, the 8-bit TTD employs a 4-bit time delay circuitry that utilizes two LC delay netw
Externí odkaz:
https://doaj.org/article/14b43702940948a4a98ccac718fa1f8f
Autor:
Hyeonseok Lee, Hyeong-Geun Park, Van-Du Le, Van-Phu Nguyen, Jeong-Moon Song, Bok-Hyung Lee, Jung-Dong Park
Publikováno v:
Sensors, Vol 23, Iss 10, p 4840 (2023)
This paper describes Monolithic Microwave Integrated Circuits (MMICs) for an X-band radar transceiver front-end implemented in 0.25 μm GaN High Electron Mobility Transistor (HEMT) technology. Two versions of single pole double throw (SPDT) T/R switc
Externí odkaz:
https://doaj.org/article/1f28ba2b69e349b590b0fc78295afd6f
Autor:
Van-Son Trinh, Jung-Dong Park
Publikováno v:
IEEE Access, Vol 9, Pp 6513-6521 (2021)
We present an X-band two-stage power amplifier (PA) in 65-nm CMOS process using a transformer (TF)-based voltage combining technique (VTC) which achieves the highest figure of merit (FOM) among recently reported CMOS PAs. The PA architecture is const
Externí odkaz:
https://doaj.org/article/06758544e87746cdaf0b778bc791a72c
Autor:
Van-Son Trinh, Jung-Dong Park
Publikováno v:
IEEE Access, Vol 9, Pp 159541-159548 (2021)
We present a compact W-band power amplifier (PA) for automotive radar application in 65-nm CMOS technology. The circuit adopts a pseudo-differential push-pull configuration based on transformers (TFs) which offer highly efficient and flexible matchin
Externí odkaz:
https://doaj.org/article/13096a2fbb134cf0a6367a4686a0094e
Publikováno v:
IEEE Access, Vol 8, Pp 76182-76192 (2020)
In this paper, we present a phased-array transceiver chip operating in full X-band (8-12 GHz) in 65-nm CMOS technology. The presented transceiver for the transmit/receive module (TRM) consists of a 6-bit passive phase shifter, a 6-bit attenuator, a b
Externí odkaz:
https://doaj.org/article/4195af35a92847178b607a113e9504a0
Autor:
Van-Son Trinh, Jung-Dong Park
Publikováno v:
IEEE Access, Vol 8, Pp 42243-42250 (2020)
We report design guidelines for a transformer-based push-pull power amplifier (PA) with a systematic stability test carried out in the complex frequency domain. By detecting the right half-plane zeros of the impedance matrix's determinant, the common
Externí odkaz:
https://doaj.org/article/3a6f093ddc9c48188985e52571ec034e
Publikováno v:
Sensors, Vol 22, Iss 24, p 9672 (2022)
A direct feedback flipped voltage follower (FVF) LDO for a high-precision frequency-modulated continuous-wave (FMCW) radar is presented. To minimize the effect of the power supply ripple on the FMCW radar sensor’s resolution, a folded cascode error
Externí odkaz:
https://doaj.org/article/97ce27b7019a4ad5bb4c3dc02e7a9cda
Publikováno v:
IEEE Access, Vol 7, Pp 140889-140898 (2019)
We present a wideband circularly polarized (CP) multiple-input multiple-output (MIMO) dielectric resonator antenna (DRA) with enhanced diversity. In the DRA element, two diagonal edges of the DR were truncated at 45° to obtain a wider axial ratio la
Externí odkaz:
https://doaj.org/article/b6f31216340044e383a72fe04d021c7f
Autor:
Van-Son Trinh, Jung-Dong Park
Publikováno v:
IEEE Access, Vol 7, Pp 140980-140989 (2019)
In this paper, we present a study on a transformer-based impedance matching network. We use a simplified transformer model comprising two magnetically coupled coils, which are driven by a source and terminated by a load. The formulae of the load and
Externí odkaz:
https://doaj.org/article/db7337e48214419a95b7b637e7f9afda