Search Results - "Kwang-Jin Koh"

Integrated Inverse Class-F Silicon Power Amplifiers for High Power Efficiency at Microwave and mm-Wave by Mortazavi, Seyed Yahya, Kwang-Jin Koh

“…This paper presents two 2-stage inverse class-F power amplifiers (PAs) at 24 GHz and 38 GHz, integrated in 0.13 μm SiGe BiCMOS technology. The PAs are composed…”
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Integrated Synthetic Fourth-Order Q -Enhanced Bandpass Filter With High Dynamic Range, Tunable Frequency, and Fractional Bandwidth Control by Amin, Farooq, Raman, Sanjay, Kwang-Jin Koh

“…This paper demonstrates a tunable synthetic fourth-order bandpass filter (BPF) at microwave frequencies. Two parallel second-order Q-enhanced LC BPFs responses…”
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An Injection Frequency-Locked Loop-Autonomous Injection Frequency Tracking Loop With Phase Noise Self-Calibration for Power-Efficient mm-Wave Signal Sources by Shin, Dongseok, Koh, Kwang-Jin

“…This paper presents a fast and autonomous injection frequency tracking and locking technique. In the present injection-locking system, a quadrature…”
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24-GHz Injection-Locked Frequency Tripler With Third-Harmonic Quadrature Phase Generator by Shin, Dongseok, Koh, Kwang-Jin

“…This paper presents a quadrature injection-locked frequency tripler (ILFT) adopting third-harmonic phase shifters for quadrature signal injection at the…”
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Integrated Synthetic Bandstop Filters for Blocker Rejection at RF and Microwave Frequency Bands by Mohammadi, Laya, Kwang-Jin Koh

“…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,…”
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A Low-Power, High-Linearity Wideband 3.25 GS/s Fourth-Order Programmable Analog FIR Filter Using Split-CDAC Coefficient Multipliers by Park, Shinwoong, Shin, Dongseok, Koh, Kwang-Jin, Raman, Sanjay

“…This article presents a 3.25 GS/s fourth-order programmable analog finite impulse response (AFIR) filter for flexible discrete time analog signal processing…”
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0.13-μm CMOS phase shifters for X-, Ku-, and K-band phased arrays by KOH, Kwang-Jin, REBEIZ, Gabriel M

“…Two 4-bit active phase shifters integrated with all digital control circuitry in 0.13-mum RF CMOS technology are developed for X- and Ku-band (8-18 GHz) and…”
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An Improved Wideband All-Pass I/Q Network for Millimeter-Wave Phase Shifters by Sang Young Kim, Dong-Woo Kang, Kwang-Jin Koh, Rebeiz, G. M.

“…This paper presents the design and analysis of an improved wideband in-phase/quadrature (I/Q) network and its implementation in a wideband phased-array…”
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A Millimeter-Wave (40-45 GHz) 16-Element Phased-Array Transmitter in 0.18- \mu m SiGe BiCMOS Technology by Kwang-Jin Koh, May, J.W., Rebeiz, G.M.

“…This paper demonstrates a 16-element phased-array transmitter in a standard 0.18-mum SiGe BiCMOS technology for Q-band satellite applications. The transmitter…”
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A Ku -Band Two-Antenna Four-Simultaneous Beams SiGe BiCMOS Phased Array Receiver by Dong-Woo Kang, Kwang-Jin Koh, Rebeiz, Gabriel M

“…This paper presents a Ku-band SiGe BiCMOS phased array receive chip capable of forming four-simultaneous beams from two antenna inputs. The design is based on…”
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Time-Interleaved Phased Arrays With Parallel Signal Processing in RF Modulations by Kwang-Jin Koh, Elyasi, Hedieh

“…The proposed time-interleaved phased array is a functional integration of a space-time domain filter in antenna arrays and a time-frequency domain filter in…”
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Time Interleaved RF Carrier Modulations and Demodulations by Kwang-Jin Koh, Mortazavi, Seyed Yahya, Afroz, Sadia

“…This paper proposes a time-interleaved RF carrier modulation and demodulation technique, suitable for high frequency mixer applications under a constraint of…”
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Finite Delay Response Harmonic Filters by Kwang-Jin Koh, Mortazavi, Seyed Yahya

“…This paper proposes a theory of harmonic filters and their mathematical models, applicable to periodically time varying (PTV) systems perturbed by a large…”
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An Energy Efficient and Fast Triple-Interferer Sensor Based on Digitally Controlled Injection-Pulled Oscillator by Shin, Dongseok, Koh, Kwang-Jin

“…This letter presents an interferer detector and digital-coder. Leveraging LC digitally controlled oscillator's (DCO) injection pulling, the injection detector…”
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A subharmonically injection-locked PLL with 130 fs RMS jitter at 24 GHz using synchronous reference pulse injection from nonlinear VCO envelope feedback by Dongseok Shin, Shinwoong Park, Raman, Sanjay, Kwang-Jin Koh

“…This paper presents an 8 GHz subharmonically injection-locked PLL (SILPLL), which is cascaded with a 24 GHz quadrature injection-locked oscillator in 130 nm…”
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A high dynamic range 4th-order 4–8 GHz Q-enhanced LC band-pass filter with 2–25% tunable fractional bandwidth by Amin, Farooq, Raman, Sanjay, Kwang-Jin Koh

“…This paper presents a fourth-order synthetic Q-enhanced LC band-pass filter (BPF) in 0.13 μm SiGe BiCMOS, where 4th-order BPF response has been synthesized by…”
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A [Formula Omitted]-Band Four-Element Phased-Array Front-End Receiver With Integrated Wilkinson Power Combiners in 0.18-[Formula Omitted] SiGe BiCMOS Technology by Kwang-Jin Koh, Kwang-Jin Koh, Rebeiz, G.M

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A 28-GHz inverse class-F power amplifier with coupled-inductor based harmonic impedance modulator by Mortazavi, Seyed Yahya, Kwang-Jin Koh

“…This paper presents a 28 GHz class-F 1 power amplifier in 0.13-μm SiGe BiCMOS technology. The PA adopts a coupled-inductor based harmonic impedance modulator…”
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Power-Efficient W -Band (92-98 GHz) Phased-Array Transmit and Receive Elements With Quadrature-Hybrid-Based Passive Phase Interpolator by Afroz, Sadia, Kim, Hyunchul, Koh, Kwang-Jin

“…This paper presents a power-efficient phased-array transmit and receive (T/R) channels adopting phase shifters (PSs) utilizing quadrature-hybrid-based…”
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W -Band (92-100 GHz) Phased-Array Receive Channel With Quadrature-Hybrid-Based Vector Modulator by Afroz, Sadia, Koh, Kwang-Jin

“…This paper presents a <inline-formula> <tex-math notation="LaTeX">W </tex-math></inline-formula>-band (92-100 GHz) phased array receive channel adopting a…”
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