• Title, Summary, Keyword: multilayer inductor

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Design and fabrication of Diplexer for Dual-band GSM/DCS Application using High-Q Multilayer Inductors (고품질 적층형 인덕터를 이용한 이중 대역 GSM/DCS 대역 분리용 다이플렉서의 설계 및 제작)

  • Sim, Sung-Hun;Kang, Chong-Yun;Choi, Ji-Won;Yoon, Young-Joong;Yoon, Seok-Jin;Kim, Hyun-Jai
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.294-298
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    • 2003
  • In this paper, the modeling and design of high-Q multilayer passives have been investigated, and multilayer diplexer for GSM/DCS applications has been designed and fabricated using the passives. To minimize the system, the configuration of a multilayer inductor has involved a square spiral structure. Modeling of a multilayer inductor was performed by the subsystems of distributed components, and using the modeling the optimal structures of the high-Q multilayer inductor could be designed by analyzing parasitics and couplings which affect their frequency characteristics. Multilayer diplexer for GSM/DCS application has been designed and fabricated using LTCC technology. LPF for GSM band had the passband insertion loss of less than 0.55 dB, the return loss of more than 12 dB, and the isolation level of more than 26 dB by locating attenuation pole at 1800 MHz. HPF for DCS band had the passband insertion loss of less than 0.82 dB, the return loss of more than 11 dB, and the isolation level of more than 38 dB by locating attenuation pole at 930 MHz.

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A Study on the Design and Fabrication of GHz Magnetic Thin Film Inductor Utilizing Co90Fe10/SiO2 Multilayer (Co90Fe10/SiO2 Multilayer를 이용한 GHz 자성박막 인덕터 설계 및 제작에 관한 연구)

  • 공기준;윤의중;진현준;박노경;문대철
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.25 no.5B
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    • pp.985-991
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    • 2000
  • In this paper, the optimum structure of 2GHz magnetic thin film planar inductor were designed and fabricated to reduce the inductor area and to maximize the inductance L and quality factor Q of the inductor. The optimum design was performed utilizing Co90Fe10 layer multilayered with SiO2 layers to avoid the eddy-current skin effect and considering new lumped element model. New magnetic thin film inductors operating at 2GHz were fabricated on a Si substrate utilizing photo-lithography and lift-off techniques. The frequency characteristics of L, Q, and impedance in more than fifty identical inductors were measured using an RF Impedance Analyzer(HP4291B with HP16193A test fixture). The self-resonant frequencies(SRF) of the inductors were measured by a Vector Network Analyzer(HP8510). The developed inductors have SRF of 1.8 to 2.3GHz, L of 47 to 68nH, and Q of 70 to 80 near 1GHz. Finally, high frequency, high performance, planar micro-inductor(area=30.8 x 30.8il$^2$) with maximized L and Q were fabricated succefully.

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Design and Fabrication of Diplexer for Dual-band GSM/DCS Application using High-Q Multilayer Inductors (고품질 적층형 인덕터를 이용한 이중 대역 GSM/DCS 대역 분리용 다이플렉서의 설계 및 제작)

  • 심성훈;강종윤;최지원;윤영중;윤석진;김현재
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.15 no.2
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    • pp.165-171
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    • 2004
  • In this paper, the modeling and design of high-Q multilayer passives have been investigated, and multilayer diplexer for GSM/DCS applications has been designed and fabricated using the passives. Modeling of a multilayer inductor was performed by the subsystems of distributed components, and using the modeling the optimal structures of the high-Q multilayer inductor could be designed by analyzing parasitics and couplings which affect their frequency characteristics. Multilayer diplexers for GSM/DCS applications have been designed and fabricated using LTCC technology. LPF for GSM band had the passband insertion loss of less than 0.55 dB, the return loss of more than 12 dB, and the isolation level of more than 26 dB. HPF for DCS band had the passband insertion loss of less than 0.82 dB, the return loss of more than 11 dB, and the isolation level of more than 38 dB.

Design of Multilayer LPF and RF diode switch for GSM (GSM용 적층형 저역통과필터와 RF 다이오드 스위치의 설계)

  • Choi, U-Sung;Yang, Sung-Hyun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.16 no.3
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    • pp.416-423
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    • 2012
  • Using Ansoft HFSS(High Frequency Structure Simulator) and Serenade(circuit simulator), multilayer LPF and RF diode switch for GSM were designed. Diodes were transformed the inductor and capacitor in Tx and Rx for the simulation of equivalent circuit, respectively. In particular, the design of the simulation for multilayer RF diode switch was carried out with considering the variance of device and contraction percentage.

Design and Fabrication of Multilayer Diplexer for Dual Band GSM/DCS Applications using Lumped Elements (집중 소자를 이용한 이중 대역 GSM/DCS용 적층형 다이플렉서의 설계 및 제작)

  • 심성훈;강종윤;최지원;윤영중;김현재;윤석진
    • Journal of the Korean Ceramic Society
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    • v.40 no.11
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    • pp.1090-1095
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    • 2003
  • In this paper, the modeling and design of high-Q multilayer passives and multilayer diplexer for GSM/DCS applications designed and fabricated using these passives have been investigated.. To miniaturize the system, configurations of inductor and capacitor have involved a square spiral structure and a vertically-interdigitated capacitor similar to 3D interdigital structure, respectively. Multilayer diplexers for GSM/DCS applications were designed and fabricated to apply high-Q multilayer passives to practical systems, which were designed by the proposed structural and equivalent circuit model. LPF for GSM band had the passband insertion loss of less than 0.55 dB, the return loss of more than 12 dB, and the isolation level of more than 26 dB by locating attenuation pole at 1800 MHz. HPF for DCS band had the passband insertion loss of less than 0.82 dB, the return loss of more than 11 dB, and the isolation level of more than 38 dB by locating attenuation pole at 930 MHz.

Design of T/R Switch Using LTCC Technology

  • Sim, Sung-Hun;Kang, Chong-Yun;Park, Ji-Won;Yoon, Young-Joong;Kim, hyun-Jai;Park, Hyung-Wook;Yoon, Seok-Jin
    • Journal of the Korean Ceramic Society
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    • v.40 no.4
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    • pp.375-379
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    • 2003
  • In this paper, a novel design of multilayer ceramic-based Transmit/Receive (T/R) switch using Low Temperature Co-fired Ceramic (LTCC) technology have been presented. Compact T/R switch has been designed by transforming quarter-wave transmission line to its lumped equivalent circuit. Especially, high-Q three dimensional inductors with double strip have been proposed and incorporated. The proposed inductor has been modeled by multi-conductor coupled lines. A measured inductor quality factor (Q) of 80 and a Self-Resonance Frequency (SRF) of 6.6 GHz have been demonstrated. The inductor library has been incorporated into the design of WCDMA T/R switch.

Indictor Library for RF Integrated Circuits in Standard Digital 0.18 μm CMOS Technology (RF 집적회로를 위한 0.18 μm CMOS 표준 디지털 공정 기반 인덕터 라이브러리)

  • Jung, Wee-Shin;Kim, Seung-Soo;Park, Yong-Guk;Won, Kwang-Ho;Shin, Hyun-Chol
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.18 no.5
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    • pp.530-538
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    • 2007
  • An inductor library for efficient low cost RFIC design has been developed based on a standard digital 0.18 ${\mu}m$ CMOS process. The developed library provides four structural variations that are most popular in RFIC design; standard spiral structure, patterned ground shield(PGS) structure to enhance quality factor, stacked structure to enable high inductance values in a given silicon area, multilayer structure to lower series resistance. Electromagnetic simulation, equivalent circuit, and parameter extraction processes have been verified based on measurement results. The extensive measurement and simulation results of the inductor library can be a great asset for low cost RFIC design and development.