• Title, Summary, Keyword: MMIC

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Low Conversion Loss and High Isolation W-band MMIC Mixer Module (낮은 변환 손실 및 높은 격리 특성의 W-band MMIC 믹서 모듈)

  • An, Dan;Rhee, Jin-Koo
    • Journal of the Institute of Electronics and Information Engineers
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    • v.52 no.2
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    • pp.50-54
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    • 2015
  • In this paper, we report on a high performance 94 GHz MMIC mixer module using 0.1-um metamorphic high electron mobility transistors (MHEMTs). A modified resistive mixer with a RF amplifier was proposed in this work for low conversion loss and high LO-RF isolation. The MMIC mixer module was fabricated using a MMIC chip and CPW-waveguide transitions. The fabricated mixer chip and module showed a low conversion loss of 6.3 dB and 9.5 dB, and LO-RF isolations of 24.8 and 30.4 dB at 94 GHz, respectively. This results are superior to those of previously W-band (75-110 GHz) MMIC mixers.

A Fully-integrated Ku/K Broadband Amplifier MMIC Employing a Novel Chip Size Package (새로운 형태의 CSP를 이용한 완전 집적화 Ku/K밴드 광대역 증폭기 MMIC)

  • Yun, Young
    • Journal of Navigation and Port Research
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    • v.27 no.2
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    • pp.217-221
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    • 2003
  • In this work, we used a novel RF-CSP to develop a broadband amplifier MMIC, including all the matching and biasing components, for Ku and K band applications. By utilizing an ACF for the RF-CSP, the fabrication process for the packaged amplifier MMIC could be simplified and made cost effective. STO (SrTiO$_3$) capacitors were employed to integrate the DC biasing components on the MMIC. A pre-matching technique was used for the gate input and drain output of the FETs to achieve a broadband design for the amplifier MMIC. The amplifier CSP MMIC exhibited good RF performance (Gain of 12.5$\pm$1.5 dB, return loss less than -6 dB, PldB of 18.5$\pm$1.5 dBm) over a wide frequency range. This work is the first report of a fully integrated CSP amplifier MMIC successfully operating in the Ku/K band.

Development of Fully Integrated Broadband MMIC Chip Set Employing CSP(Chip Size Package) for K/Ka Band Applications (CSP(Chip Size Package)를 이용한 완전집적화 K/Ka 밴드 광대역 MMIC Chip Set 개발)

  • Yun Young
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.16 no.1
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    • pp.102-112
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    • 2005
  • In this work, we developed fully integrated broadband MMIC chip set employing CSP(Chip Size Package) for K/Ka band applications. By utilizing an ACF for the RF-CSP, the fabrication process for the packaged amplifier MMIC could be simplified and made cost effective. $STO(SrTi_{3})$ capacitors were employed to integrate the DC biasing components on the MMIC, and LC parallel circuits were employed for DC feed and ESD protection. A pre-matching technique and RC parallel circuit were used to achieve a broadband matching and good stability fer the amplifier MMIC in K/Ka band. The amplifier CSP MMIC exhibited good RF performance over a wide frequency range in K/Ka band. This work is the first report of a fully integrated CSP amplifier MMIC successfully operating in the K/Ka band.

Space Qualification of MMICs for COMS Communications Transponder (통신해양기상위성 통신 중계기용 MMIC의 우주인증)

  • Jang, Dong-Pil;Yeom, In-Bok;O, Seung-Yeop
    • Journal of Satellite, Information and Communications
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    • v.1 no.2
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    • pp.56-62
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    • 2006
  • This paper describes the MMIC product qualification of the Ka band satellite transponder for the COMS(Communication, Ocean and Meteorological Satellite). Ka-band active equipment for the COMS communications transponder are being developed by using 12 kinds of MMICs which include low noise amplifiers, medium power amplifiers, frequency mixers, frequency multipliers, RF switch, and HEMT attenuator MMIC, Those MMICs had been fabricated at the MMIC production foundry of northrop Grumman Space Technology (Velocium) which is qualified for space application, and experienced in various space programs during past decades. For the MMIC product qualification, Visual inspection and SEM inspection had been performed, and burn-in test for 240 hours and accelerated life-test for 1000 hours had been done on test fixtures of individual MMIC products at $125^{\circ}C$. Additionally, infrared temperature scanning and finite element simulation were performed to analyze and confirm the channel temperature of semiconductor devices on several representatives of those MMIC products that os one of the most important factors in performance degradation and life reduction.

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A Fully-integrated High Performance Broadb and Amplifier MMIC for K/Ka Band Applications (K/Ka밴드 응용을 위한 완전집적화 고성능 광대역 증폭기 MMIC)

  • Yun Young
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.8 no.7
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    • pp.1429-1435
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    • 2004
  • In this work, high performance broadband amplifier MMIC including all the matching and biasing components, and electrostatic discharge (ESD) protection circuit was developed for K/Ka band applications. Therefore, external biasing or matching components were not required for the operation of the MMIC. STO (SrTiO3) capacitors were employed to integrate the DC biasing components on the MMIC, and miniaturized LC parallel ESD protection circuit was integrated on MMIC, which increased ESD breakdown voltage from 10 to 300 V. A pre-matching technique and RC parallel circuit were used for the broadband design of the amplifier MMIC. The amplifier MMIC exhibited good RF performances and good stability in a wide frequency range. The chip size of the MMICs was $1.7{\pm}0.8$ mm2.

Development and Manufacture of W-band MMIC Chip and manufacture of Transceiver (W-대역 MMIC 칩 국내 개발 및 송수신기 제작)

  • Kim, Wansik;Jung, Jooyong;Kim, Younggon;Kim, Jongpil;Seo, Mihui;Kim, Sosu
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.19 no.6
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    • pp.175-181
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    • 2019
  • For the purpose of Application to the small radar sensor, the MMIC Chip, which is the core component of the W-band, was designed in Korea according to the characteristics of the transceiver and manufactured by 0.1㎛ GaAs pHEMT process, and compared with the MMIC chip purchased overseas. The noise figure of low noise amplifier, insertion loss of the switch and image rejection performance of the down-converted mixer MMIC chip showed better characteristics than those of commercial chips. The MMIC chip developed in domestic was applied to the transmitter and receiver through W-band waveguide low loss transition structure design and impedance matching to verify the performance after the fabrication is 9.17 dB, which is close to the analysis result. As a result, it is judged that the transceiver can be applied to the small radar sensor better than the MMIC chip purchased overseas.

Miniaturized DBS Downconverter MMIC Showing a Low Noise and Low Power Dissipation Characteristic (저잡음ㆍ저소비전력 특성을 가지는 위성방송 수신용 초소형 다운컨버터 MMIC)

  • Yun, Young
    • Journal of Navigation and Port Research
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    • v.27 no.4
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    • pp.443-447
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    • 2003
  • In this work. using 0.2 GaAs modulation doped FET(MODFET), a high performance DBS downconverter MMIC was developed for direct broadcasting satellite (DBS) application. Without LNA, the downconverter MMIC showed a very low noise of 4.8 dB, which is lower by 3 dB than conventional ones. A low LO power of -10 dBm was required for the normal DBS operation of the downconverter MMIC. which reduced the power consumption via a removal of LO amplifier on MMIC. It required only a low power consumption of 175 mW, which is lower than 70 percent of conventional ones. The LO leakage power at IF output was suppressed to a lower level than 30 dBm, which removes a bulky LO rejection filter on a board. The fabricated chip, which include a mixer, If amplifiers. LO rejection filter, and active balun, exhibited a small size of $0.84{\times}0.9\textrm{mm}^2$.

Design and Fabrication of MMIC Amplifier for BWLL (BWLL용 MMIC 증폭기의 설계 및 제작)

  • 배현철;윤용순;박현창;박형무;이진구
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.13 no.4
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    • pp.323-330
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    • 2002
  • In this paper, we have designed and fabricated an BWLL MMIC amplifier using GaAs PHEMT devices. We have optimized power divider/combiner size for small size of MMIC amplifier Using 0.2 ${\mu}$m AIGaAs/lnGaAs/GaAs PHEMT devices, the two stave MMIC amplifier has demonstrated a S$_{21}$ gain of 8.7 ㏈ with input/output return losses of lower than -10 ㏈ at 26.7 GHz. The size of this chip is 4.11 ${\times}$ 2.66 $\textrm{mm}^2$.

A fully integrated downconverter MMIC for millimeter wave applications (밀리미터파 응용을 위한 완전집적 다운컨버터 MMIC)

  • Jeon, Jang-Hyeon;Yun, Young
    • Journal of the Korean Society of Marine Engineering
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    • v.37 no.1
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    • pp.99-104
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    • 2013
  • In this paper, we developed a fully integrated downconverter MMIC (monolithic microwave integrated circuit) including Lange coupler and output active balun for millimeter wave applications. Concretely, ${\lambda}$/4 transmission line was added to Lange coupler for size reduction of RF/LO input, and mixed RF/LO signals were applied to gate of the FET of mixer. Active balun was used at output port for a coupling of out-of-phase IF output signals. According to measured results, the proposed downconverter MMIC showed good RF performances. For example, the downconverter MMIC showed an LO leakage power of -25 dBc at IF output port, and a RF-LO isolation of 18 dB. Therefore, off-chip components such as LO rejection filters were not required for a normal operation of the proposed downconverter MMIC. The proposed downconverter MMIC showed a conversion gain of 10.3 dB at RF frequency of 63 GHz. The size of the downconverter MMIC including all active and passive components was $2.2{\times}1.4mm^2$.

Design of Double Balanced MMIC Mixer for Ku-band (Ku-band용 Double Balanced MMIC Mixer의 설계 및 제작)

  • Ryu Keun-Kwan
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.2 no.2
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    • pp.97-101
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    • 2003
  • A MMIC (monolithic microwave integrated circuit) mixer chip using the Schottky diode of an InGahs/CaAs p-HEMT process has been developed for the receiver down converter of Ku-band. A different approach to the MMIC mixer structure is applied for reducing the chip size by the exchange of ports between If and LO. This MMIC covers with RF (14.0 - 14.5 GHz) and If (12.252 - 12.752 GHz). According to the on-wafer measurement, the miniature (3.3X3.0 m) MMIC mixer demonstrates conversion loss below 9.8 dB, RF-to-IF isolation above 23 dB, LO-to-IF isolation above 38 dB, respectively.

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