Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Kwang-Jin Koh"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 68:1576-1590
This article presents a 3.25 GS/s fourth-order programmable analog finite impulse response (AFIR) filter for flexible discrete time analog signal processing (DT-ASP). For wide application of the proposed AFIR filter, it is designed for full bandwidth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d4fe74bc7cfd1c133c111c6036d07c7
https://doi.org/10.1109/tmtt.2020.2967388
https://doi.org/10.1109/tmtt.2020.2967388
Autor:
Kwang-Jin Koh, Dongseok Shin
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 66:2898-2906
This paper presents a quadrature injection-locked frequency tripler (ILFT) adopting third-harmonic phase shifters for quadrature signal injection at the third-harmonic band. Two capacitively degenerated differential transconductor pairs inject quadra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87130f86d42351871cc84fcda6bc9a80
https://doi.org/10.1109/tcsi.2019.2912422
https://doi.org/10.1109/tcsi.2019.2912422
Publikováno v:
IEEE Journal of Solid-State Circuits. 54:768-784
This paper demonstrates a tunable synthetic fourth-order bandpass filter (BPF) at microwave frequencies. Two parallel second-order Q-enhanced LC BPFs responses are added with the out of phase to synthesize a fourth-order BPF response. The filter is i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faee5e435754b9bd731fdf703bebfff4
https://doi.org/10.1109/jssc.2018.2882266
https://doi.org/10.1109/jssc.2018.2882266
Autor:
Dongseok Shin, Kwang-Jin Koh
Publikováno v:
IEEE Solid-State Circuits Letters. 1:211-214
This letter presents an interferer detector and digital-coder. Leveraging LC digitally controlled oscillator’s (DCO) injection pulling, the injection detector senses the frequency offset between an interferer and the DCO’s intrinsic frequency ( $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52f4d104ef2b077a85ad23ba6654f18b
https://doi.org/10.1109/lssc.2019.2902987
https://doi.org/10.1109/lssc.2019.2902987
Autor:
Kwang-Jin Koh, Sadia Afroz
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 65:2070-2082
This paper presents a $W$ -band (92–100 GHz) phased array receive channel adopting a power domain vector modulator (VM), which utilizes a 90° hybrid-coupler-based phase interpolator. The quadrature hybrid leverages its inherent functions of quadra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::effc582f6f66e697e16a58f944136bc9
https://doi.org/10.1109/tcsi.2017.2779941
https://doi.org/10.1109/tcsi.2017.2779941
Publikováno v:
IEEE Journal of Solid-State Circuits. 53:1678-1693
This paper presents a power-efficient phased-array transmit and receive (T/R) channels adopting phase shifters (PSs) utilizing quadrature-hybrid-based power-domain phase interpolator. The W-band T/R channels are implemented in GlobalFoundries 0.13- $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9df6e38a5c82d4caf34aea43abc090ed
https://doi.org/10.1109/jssc.2018.2810178
https://doi.org/10.1109/jssc.2018.2810178
Publikováno v:
International Journal of Microwave and Wireless Technologies. 10:635-642
This paper presents an active Q-enhanced LC dual-band band-pass filtering approach using parallel synthesis techniques at X- and Ku-bands in 0.13 µm SiGe BiCMOS technology. By employing two independently tunable parallel LC-tanks with either in-phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c348ef5016a9bc9694fbed0ad2dd5df
https://doi.org/10.1017/s1759078718000429
https://doi.org/10.1017/s1759078718000429
Autor:
Kwang-Jin Koh, Dongseok Shin
Publikováno v:
IEEE Journal of Solid-State Circuits. 53:825-838
This paper presents a fast and autonomous injection frequency tracking and locking technique. In the present injection-locking system, a quadrature injection-locked oscillator (QILO) is third harmonically locked to a quadrature voltage-controlled osc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21eec43eb6faf5ec3b3cab47f83b2d88
https://doi.org/10.1109/jssc.2017.2782762
https://doi.org/10.1109/jssc.2017.2782762
Autor:
Kwang-Jin Koh, Sadia Afroz
Publikováno v:
IEEE Microwave and Wireless Components Letters. 28:180-182
This letter presents a ${D}$ -band two-element phased-array receiver (Rx) front end implemented in a 0.13- $\mu \text{m}$ SiGe BiCMOS process. The Rx employs a low-loss quadrature-hybrid-based power-domain phase interpolator for a power-efficient mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::791538af5cfec9df1a968805e76af525
https://doi.org/10.1109/lmwc.2018.2792150
https://doi.org/10.1109/lmwc.2018.2792150
Autor:
Laya Mohammadi, Kwang-Jin Koh
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 64:3557-3567
In this paper, active synthetic band-stop filter (BSF) for interference rejection at 2–4, 4–8, and 8–16 GHz are presented. In the designs, a sharp notch, typically less than −50 dB for the entire frequency bands, is synthesized by subtracting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d7a542d68bf5c36aea25fd7b9f9876
https://doi.org/10.1109/tmtt.2016.2602867
https://doi.org/10.1109/tmtt.2016.2602867