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Young-Ghyu Ahn

Bio: Young-Ghyu Ahn is an academic researcher from Sungkyunkwan University. The author has contributed to research in topics: Electrical element & Inductor. The author has an hindex of 1, co-authored 1 publications receiving 41 citations.

Papers
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Journal ArticleDOI
TL;DR: This paper presents an efficient technique to generate a scalable double-pi circuit model for spiral inductors using a relatively simple single-pi model and converts the model to the double- pi model according to the physics-based conversion algorithm.
Abstract: This paper presents an efficient technique to generate a scalable double-pi circuit model for spiral inductors. The double-pi equivalent circuit is widely used to build an inductor library because of its high accuracy over a wide frequency range. However, direct parameter extraction for the double-pi model and scalable fitting for each parameter are complicated due to the large number of circuit elements. The proposed method performs a scalable modeling using a relatively simple single-pi model and converts the model to the double-pi model according to the physics-based conversion algorithm. For this purpose, physical relations between the single-pi and double-pi equivalent circuits for a spiral inductor have been derived. The proposed technique is verified by developing a scalable inductor library using 0.13-mum CMOS technology.

41 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the authors present a solution manual for the design of radio frequency integrated circuits (RFIC) solution manual, which can be found in the ePUB format.
Abstract: The Design Of Cmos Radio Frequency Integrated Circuits Solution Manual *FREE* the design of cmos radio frequency integrated circuits solution manual 4. RESISTA N CE . RESISTORS AND RESISTOR CIRCUITS Resistance is the op position to current flow in various degrees. The practical unit of resistance is called the ohm. A resistor on one ohm is physically very large but provides only a small resistance to current flow.The Design Of Cmos Radio Frequency Integrated Circuits the design of cmos radio frequency integrated circuits solution manual The Design Of Cmos Radio Frequency Integrated Circuits Solution Manual The Design Of Cmos Radio Frequency Integrated Circuits Solution Manual FREE the design of cmos radio frequency integrated circuits solution manual 4 RESISTA N CE Read The Design Of Cmos Radio Frequency Integrated Free Download Books The Design Of Cmos Radio Frequency Integrated Circuits Solution Manual You know that reading The Design Of Cmos Radio Frequency Integrated Circuits Solution Manual is beneficial because we are able to get a lot of information in the reading materials The design of cmos radio frequency integrated circuits Download The design of cmos radio frequency integrated circuits solution manual in EPUB Format In the website you will find a large variety of ePub PDF Kindle AudioBook and books Such as manual user assist The design of cmos radio frequency integrated circuits solution manual ePub comparison suggestions and The Design Of CMOS Radio Frequency Integrated Circuits The Design of CMOS Radio Frequency Integrated Circuits Solutions Manual Solutions Manuals are available for thousands of the most popular college and high school textbooks in subjects such as Math Science Physics Chemistry Biology Engineering Mechanical Electrical Civil Business and more The Design of CMOS Radio Frequency Integrated Circuits The Design of CMOS Radio Frequency Integrated Circuits Second Edition The last chapter will provide a trip down memory lane for some readers—a sampling of circuits of particular interest in RF history including the Regency TR 1 transistor radio design and the three transistor cicuit that created the first toy walkie talkie in 1962 PDF The Design of CMOS Radio Frequency Integrated PDF Student Solutions Manual Chapters 1 11 for Stewarts Single Variable Calculus Early Transcendentals 7th By James Stewart P D F PDF The Beginning Questions to Dr Malachi Z York El About By Malachi Z York El pdf PDF The Design of CMOS Radio Frequency Integrated PDF The Design of CMOS Radio Frequency Integrated Circuits Second Edition 2 DESCRIPTION This expanded and thoroughly revised edition of Thomas H Lee s acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems The Design of CMOS Radio Frequency Integrated Circuits Chapter 2 Basic MOS Device Physics In studying the design of integrated circuits one of two extreme approaches can b Design of Analog CMOS Integrated Circuits Chap 3 I X1 X2 Single Stage Amplifiers Figure 3 1 Input output characteristic of a nonlinear system The Design of CMOS Radio Frequency Integrated Circuits The Design of CMOS Radio Frequency Integrated Circuits Second Edition Thomas H Lee on Amazon com FREE shipping on qualifying offers This expanded and thoroughly revised edition of Thomas H Lee s acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems The chapters on low noise amplifiers The Design of CMOS Radio Frequency Integrated Circuits by The Design of CMOS Radio Frequency

213 citations

Book ChapterDOI
01 Jan 2003
TL;DR: In this paper, an expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems.
Abstract: This expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems. The chapters on low-noise amplifiers, oscillators and phase noise have been significantly expanded as well. The chapter on architectures now contains several examples of complete chip designs that bring together all the various theoretical and practical elements involved in producing a prototype chip. First Edition Hb (1998): 0-521-63061-4 First Edition Pb (1998); 0-521-63922-0

207 citations

Journal ArticleDOI
TL;DR: In this article, a broadband model combining the advantages of the physics-based circuit model and behavioral macro-model is proposed for accurately characterizing RF behaviors of spiral inductors, which is also applicable to other passive components such as transmission lines and transformers.
Abstract: Recent models for on-chip spiral inductors have been extensively examined and compared by transfer function analysis. Through the calculation of the transfer functions for the models, including T-, 1-π, and 2-π models, the pros and cons of equivalent circuit topology of each model are evaluated. It is found that the number of poles provided by a certain topology is a constant, while complex poles are responsible for the broadband fitting capacity of the model. The 2-π model has the most poles and the best broadband fitting capacity, while 1-π and T-models are better solutions considering both accuracy and efficiency. A novel broadband model combining the advantages of the physics-based circuit model and behavioral macro-model is proposed for accurately characterizing RF behaviors of spiral inductors. A number of inductors with various geometries have been fabricated to verify the model. Excellent agreements are obtained between the measured data and calculation from the proposed model up to 40 GHz. This modeling method is also applicable to other passive components such as transmission lines and transformers.

29 citations

Journal ArticleDOI
TL;DR: A ladder filter-based programmable time-delay element for beamforming in ultra-wideband (UWB) systems and a lumped-element realization becomes possible by approximating e-std as a ratio of polynomials (based on Taylor and Padé expansions).
Abstract: We introduce a ladder filter-based programmable time-delay element for beamforming in ultra-wideband (UWB) systems. Such a lumped-element realization becomes possible by approximating e -std as a ratio of polynomials (based on Taylor and Pade expansions). When compared with conventional methods based on the tapped delay-line architecture, the proposed technique achieves lower power dissipation, higher delay range and resolution, and better area efficiency. A prototype delay line designed for the 3.1-10.6 GHz UWB range achieves a delay range of 140 ps and a gain range of -30 dB to +10 dB. Fabricated in a 0.25 μm SiGe BiCMOS process, the delay element occupies an active area of 1 mm 2 and consumes 53 mW from a 2.5 V supply. A four-antenna beamforming system using the delay element can achieve a scanning range of ±61 ° with 0.86 ° resolution for an antenna spacing of 15 mm.

23 citations

Journal ArticleDOI
TL;DR: In this paper, a self-mixing wide tuning range voltage-controlled oscillator (VCO), using 0.35 μm SiGe bipolar technology, is proposed, which operates from 91 to 101 GHz with 10.6% tuning range.
Abstract: A self-mixing wide tuning range voltage-controlled oscillator (VCO), using 0.35 μm SiGe bipolar technology, is proposed in this work. The entire circuit consists of a VCO core, a mixer and an emitter coupled differential amplifier. The fundamental and second harmonic signals from the VCO core are used as LO and RF input signals for the mixer circuit, respectively. The mixing product at the third harmonic of the VCO core is selected and amplified, while the low frequency part of the mixing product is suppressed. The simulated harmonic suppression of the third harmonic over fundamental signal is higher than 18 dB. The VCO operates from 91 to 101 GHz with 10.6% tuning range. The measured phase noise at 3 MHz offset is lower than -83 dBc/Hz over the entire frequency band. The VCO occupies 700 × 500 μm2 die area and consumes 185 mW under 3.5 V dc power supply.

22 citations