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People > Research Fellow > Curriculum Vita
Receiver installed on the in-door/out-door testing facility of NRAO Green Bank for noise measurement. (Picture Credits: C.C. Lin, C.T. Ho, and Y.J. Hwang)
Receiver installed on the in-door/out-door testing facility of NRAO Green Bank for noise measurement.
Single-pixel, 700~945 MHz prototype receiver for the Baryon survey project, (Left panel) outlook of the corrugated short backfire antenna(Picture Credits: C.C. Lin, C.T. Ho, and Y.J. Hwang)
Single-pixel, 700~945 MHz prototype receiver for the Baryon survey project, outlook of the corrugated short backfire antenna
cold cartridge assembly and warm cartridge assembly. This model is developed by the Microwave Device Laboratory, in collaboration with colleagues in NRAO, HIA, University of Chile, and NAOJ. (Picture Credits: C.T. Ho)
cold cartridge assembly and warm cartridge assembly
The computer simulated mechanical layout of the ALMA Band-1 receivers.
The computer simulated mechanical layout of the ALMA Band-1 receivers
The 31 - 50 GHz Cryogenic HEMT Cascode mixer was developed in ASIAA Microwave Device Laboratory for the ALMA Band-1 Receiver Key component development. The mixer is with very low conversion loss and even some positive conversion gain over very broadband frequency range.
31 - 50 GHz Cryogenic HEMT Cascode Mixer
Hybrid RF low-noise amplifier for 700~945 MHz observations. Measured at temperature around 20 K, this device achieve a noise performance less than 5K over a limited bandwidth. (Picture Credit: C.C. Chuang)
Hybrid RF low-noise amplifier for 700~945 MHz observations
Microwave Device Laboratory
Microwave Device Laboratory
Cleaned SZE images of clusters observed by seven-element AMiBA. The white circles indicate the half-maximum contour of the primary beam (the field of view; 23'), and the blue patches at the bottom-right corners show the half-maximum regions of the dirty beams (~6').
The first SZE signal with the 7-element AMiBA
The AMiBA receiver with the vacuum chamber removed (Chen et al., 2009, ApJ, 694, 1664).
The AMiBA receiver with the vacuum chamber removed
Full Q-band microstrip to waveguide transition probe. The symmetric-sleeve E-plane transition probe mounted on a housing block. This low-loss broadband passive millimeter-wave planar circuit is to fulfill the components required for the ALMA Band-1 receivers. (Picture Credit: C.C. Lin)
Full Q-band microstrip to waveguide transition probe.
Ultra-low-phase-noise broadband tuning voltage-controlled transistor oscillators, the packaged circuit module, the phase-lock circuit module. The goal of this development project is to provide possible miniaturized low-thermal dissipation local oscillator source for the Atacama Large Millimeter/submillimeter Array. This is a collaborative project between ASIAA, National Taiwan University, and the National Radio Astronomical Observatory (USA). (Picture Credits: C.C. Chiong and Y.F. Kuo)
Ultra-low-phase-noise broadband tuning voltage-controlled transistor oscillators, the packaged circuit module, the phase-lock circuit module.
Ultra-low-phase-noise broadband tuning voltage-controlled transistor oscillators, the packaged circuit module. The goal of this development project is to provide possible miniaturized low-thermal dissipation local oscillator source for the Atacama Large Millimeter/submillimeter Array. This is a collaborative project between ASIAA, National Taiwan University, and the National Radio Astronomical Observatory (USA). (Picture Credits: C.C. Chiong and Y.F. Kuo)
Ultra-low-phase-noise broadband tuning voltage-controlled transistor oscillators, the packaged circuit module.
The evolution of the SMA receiver configuration: the low-noise amplifier (LNA) upgrade. In 2007, the LNA bandwidth remained in 4-6GHz for first generation receiver. By 2011, the amplifier was upgraded to TTI-CLNA-4080 with 4-8GHz bandwidth, manufacture by a Spanish company. Now, we are using the new amplifier, CITCRYO1-12A, made by California Institute of Technology. This new upgrade increases the receiver bandwidth to 4-12GHz.
The SMA Receivers Upgrade
A Cryogenically coolde 31-50GHz Metamorphic High-Electron-Mobility Transistor (MHEMT) monolithic microwave integrated circuit (MMIC) low-noise amplifier (LNA) Modules has been developed for ALMA Band-1 receiver key component development.
Cryogenically coolde 31-50GHz MHEMT MMIC LNA Modules
A prototype W-band mixer developed for the AMiBA project. Left: a packaged module used in the AMiBA prototype; Right: the MMIC chip that the module contains. Working with the experts in National Taiwan University, we have been focusing on developing our c
A prototype W-band mixer developed for the AMiBA project
Hwang, Yuh-Jing
Associate Research Fellow
Download PDF version of CV
photo of Hwang, Yuh-Jing
Office: ASMAB 1013
TEL: +886-2-2366-5340
FAX: +886-2-2367-7849
Email: yjhwang_replace2@_asiaa.sinica.edu.tw

Education and Positions

  • Associate Research Fellow, ASIAA (2014~present)
  • Assistant Research Fellow, ASIAA (2005~2014)
  • Research Assistant, ASIAA (1995~2005)
  • Ph.D., Communication Engineering, National Taiwan University (2005)
  • MS., Electrical Engineering, National Taiwan University (1993)
  • B.S., Electrical Engineering, National Taiwan University (1991)

Honors & Awards

  • Chip Implementation Center (CIC) Multi-Project Chip Service award for chip design entitled "W-Band Subharmonically-Pumped HEMT diode Mixer" (2001)

Research Interests

My research interests are mainly in microwave, millimeter-wave and submillimeter-wave circuit, components and systems for astronomical instrumentations. The technical areas involved are (1) the microwave monolithic integrated circuit (MMIC) design, cryogenic testing and the packaged module, (2) theory of nonlinear microwave circuits, (3) frequency synthesis, (4) receiver system design, integration and performance measurement, and (5) Submillimeter-wave and THz applications.

Publications

Complete List of Publications

Journal Papers affiliated with ASIAA

  1. Lin H-H; Lin K-Y; Li C-T; Tseng Y-H; Jiang H; Wang J-H; Cheng J-C; Pen U-L; Chen M-T; Chen P; Chen Y; Goto T; Hashimoto T; Hwang Y-J; King S-K; Kubo D; Kuo C-Y; Mills A; Nam J; Oshiro P; Shen C-S; Tseng H-C; Wang S-H; Feng-Shun Wu V; Bower G; Chang S-H; Chen P-A; Chen Y-C; Chiang Y-K; Fedynitch A; Gusinskaia N; Ho SCC; Hsiao TYY; Hu C-P; Huang Y D; Jauregui Garcia JM; Kim SJ; Kuo C-Y; Fang-Jie Ling D; On AYL; Peterson JB; Raquel BJR; Su S-C; Uno Y; Wu CKW; Yamasaki S; Zhu H-M, "BURSTT: Bustling Universe Radio Survey Telescope in Taiwan" , PASP: 134(1039), id.094106 (14pp), Sep, 2022 [SCI] ( ADS | Fulltext )
  2. Wu YC; Chiong CC; Hwang YJ; et al., "An Innovative Joint-Injection Mixer with Broadband IF and RF for Advanced Heterodyne Receivers of Millimeter-wave Astronomy" , IEEE T Microw Theory: 68(12), 5408-5422, Dec, 2020 [SCI] ( ADS | Fulltext )
  3. Hu J-H; Choing C-C; Hwang Y-J; Tsai Z-M, "E-Band Mixer With IP1dB Design Consideration for Radio Astronomical Instrumentation" , IEEE Microw Wirel Co: 28(5), 452-454, May, 2018 [SCI] ( ADS | Fulltext )
  4. Tseng TF; Lai CH; Lu JT; Tsai YF; Hwang YJ; Sun CK, "Investigation on Strong Coupling Behaviors of THz Subwavelength Directional Couplers" , IEEE Photon J: 4(6), 2307-2314, Dec 3, 2012 [SCI] ( ADS | Fulltext )
  5. Chen H; Chen TH; Tseng TF; Hwang YJ; et al., "High-sensitivity in vivo THz transmission imaging of early human breast cancer in a subcutaneous xenograft mouse model" , Opt Express: 19(22), 21552-21562, Oct 24, 2011 [SCI] ( ADS | Fulltext )
  6. Lu J-T; Lai C-H; Tseng T-F; ...; Hwang YJ; et al., "Terahertz pipe-waveguide-based directional couplers" , Opt Express: 19(27), 26883-26890, Dec, 2011 [SCI] ( ADS | Fulltext )
  7. Lu J-T; Lai C-H; Tseng T-F; ...; Hwang YJ;et al., "Terahertz polarization-sensitive rectangular pipe waveguides" , Opt Express: 19(22), 21532-21539, Oct 24, 2011 [SCI] ( ADS | Fulltext )
  8. Huang CWL; ...; Ho PTP; Koch PM; ...; Lin KY; Liu GC; Molnar SM; Nishioka H; Umetsu K; ...; Altamirano P; ...; Chang CH; Chang SH; Chang SW; Chen MT; ...; Han CC; Huang YD; Hwang YJ; Jiang H; ...; Kubo D; Li CT; Martin-Cocher P; Oshiro P; Raffin P; Wei T; et al., "AMiBA: scaling relations between the integrated Compton-y and X-ray derived temperature, mass, and luminosity" , ApJ: 716(1), 758-765, June 10, 2010 [SCI] ( ADS | Fulltext )
  9. Huang YW; Tseng TF; Kuo CC; Hwang YJ; Sun CK, "Fiber-based swept-source terahertz radar" , Opt Lett: 35(9), 1344-1346, May 1, 2010 [SCI] ( ADS | Fulltext )
  10. Li CT; Kubo DY; Wilson W; ...; Lin KY; Chen MT; Ho PTP; Chen CC; Han CC; Oshiro P; Martin-Cocher P; Chang CH; Chang SH; Altamirano P; Jiang H;...; Wang H; ...; Chang SW; Huang YD; Hwang YJ; ...; Koch P; Liu GC; Nishioka H; Umetsu K; Wei T; Wu JHP, "AMiBA Wideband Analog Correlator" , ApJ: 716(1), 746-757, June 10, 2010 [SCI] ( ADS | Fulltext )
  11. Liao Y-W; Wu J-HP; Ho PTP; Huang C-WL; Koch PM; Lin K-Y; Liu G-C; Molnar SM; Nishioka H; Umetsu K; Wang F-C; Altamirano P; Birkinshaw M; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Chiueh T; Han C-C; Huang Y-D; Hwang Y-J; Jiang H; Kesteven M; Kubo DY; Li C-T; Martin-Cocher P;Oshiro P; Raffin P; Wei T; Wilson W, "AMiBA: Sunyaev-Zeldovich Effect Derived Properties and Scaling Relations of Massive Galaxy Clusters" , ApJ: 713(1), 584-591, APR 10 2010, 2010 [SCI] ( ADS | Fulltext )
  12. Liu G-C; Birkinshaw M; Wu J-HP; Ho PTP; Huang C-WL; Liao Y-W; Lin K-Y; Molnar SM; Nishioka H; Koch PM; Umetsu K; Wang F-C; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Han C-C; Huang Y-D; Hwang Y-J; Jiang H; Kestevan M; Kubo DY; Li C-T; Martin-Cocher P; Oshiro P; Raffin P; Wei T; Wilson W, "Contamination of the Central Sunyaev-Zel'dovich Decrements in AMiBA Galaxy Cluster Observations" , ApJ: 720(1), 608-613, Sept, 2010 [SCI] ( ADS | Fulltext )
  13. Lu JT; Hsueh YC; Huang YR; Hwang YJ; et al., "Bending loss of terahertz pipe waveguides" , Opt Express: 18(25), 26332-26338, Dec 6, 2010 [SCI] ( ADS | Fulltext )
  14. Chen H-W; Chiu C-M; Lai C-H; ...; Hwang Y-J; et al., "Subwavelength Dielectric-Fiber-Based THz Coupler" , IEEE J Lightwave Tech: 27(11), 1489-1495, Jun 1, 2009 [SCI] ( ADS | Fulltext )
  15. Chen M-T; Li C-T; Hwang Y-J; Jiang H; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chiueh T-D; Chu T-H; Han C-C; Huang Y-D; Kesteven M; Kubo D; Martin-Cocher P; Oshiro P; Raffin P; Wei T; Wang H; Wilson W; Ho PTP; Huang C-W; Koch P; Liao Y-W; Lin K-Y; Liu G-C; Molnar SM; Nishioka H; Umetsu K; Wang F-C; Wu J-HP ; et al., "AMiBA: Broadband Heterodyne CMB Interferometry" , ApJ: 694(2), 1664-1669, April 1, 2009 [SCI] ( ADS | Fulltext )
  16. Chiu CM; Chen HW; Huang YR; Hwang YJ; et al., "All-terahertz fiber-scanning near-field microscopy" , Opt Lett: 34(7), 1084-1086, Apr 1, 2009 [SCI] ( ADS | Fulltext )
  17. Ho PTP; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen C-C; Chen K-J; Chen M-T; Han C-C; Ho WM; Huang Y-D; Hwang Y-J; Ibañez-Romano F; Jiang H; Koch PM; Kubo DY; Li C-T; Lim J; Lin K-Y; Liu G-C; Lo K-Y; Ma C-J; Martin RN; Martin-Cocher P; Molnar SM; Ng K-W; Nishioka H; O'Connell KE; Oshiro P; Patt F; Raffin P; Umetsu K; Wei T; et al., "The Yuan-Tseh Lee Array for Microwave Background Anisotropy" , ApJ: 694(2), 1610-1618, April 1, 2009 [SCI] ( ADS | Fulltext )
  18. Lai CH; Hsueh YC; Chen HW; Huang YJ; al., "Low-index terahertz pipe waveguides" , Opt Lett: 34(21), 3457-3459, Nov 1, 2009 [SCI] ( ADS | Fulltext )
  19. Lin K-Y; Li C-T; Ho PTP; Huang C-WL; Liao Y-W; Liu G-C; Koch PM; Molnar SM; Nishioka H; Umetsu K; Wang F-C; Wu J-HP; Kestevan M; Birkinshaw M; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Martin-Cocher P; Han C-C; Huang Y-D; Hwang Y-J; Ibañez-Roman F; Jiang H; Kubo DY; Oshiro P; Raffin P; Wei T; Wilson W; Chen K-J; Chiueh T, "AMiBA: System Performance" , ApJ: 694(2), 1629-1636, Apr 1, 2009 [SCI] ( ADS | Fulltext )
  20. Lin Y-S; Hsieh Y-S; Chiong C-C; Hwang Y-J, "Q-band GaAs bandpass filter design for ALMA band-1" , IEEE Microw Wirel Co: 19(6), 353-355, June 1, 2009 [SCI] ( ADS | Fulltext )
  21. Nishioka H; Wang F-C; Wu J-HP; Ho PTP; Huang C-WL; Koch PM; Liao Y-W; Lin K-Y; Liu G-C; Molnar SM; Umetsu K; Birkinshaw M; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Han C-C; Huang Y-D; Hwang Y-J; Jiang H; Kesteven M; Kubo DY; Li C-T; Martin-Cocher P; Oshiro P; Raffin P; Wei T; Wilson W, "Tests of AMiBA Data Integrity" , ApJ: 694(2), 1637-1642, Apr 1, 2009 [SCI] ( ADS | Fulltext )
  22. Umetsu K; Birkinshaw M; Liu G-C; Wu J-HP; Medezinski E; Broadhurst T; Lemze D; Zitrin A; Ho PTP; Huang C-WL; Koch PM; Liao Y-W; Lin K-Y; Molnar SM; Nishioka H; Wang F-C; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Han C-C; Huang Y-D; Hwang Y-J; Jiang H; Kesteven M; Kubo DY; Li C-T; Martin-Cocher P; Oshiro P; Raffin P; Wei T; Wilson W, "Mass and Hot Baryons in Massive Galaxy Clusters from Subaru Weak Lensing and AMiBA Sunyaev-Zel'dovich Effect Observations" , ApJ: 694(2), 1643-1663, Apr 1, 2009 [SCI] ( ADS | Fulltext )
  23. Wu JHP; Ho PTP; ...; Koch PM; ...; Lin KY; Liu GC; Molnar SM; Nishioka H; Umetsu K; ...; Altamirano P; ...; Chang CH; Chang SH; Chang SW; Chen MT; ...; Han CC; Huang YD; Hwang YJ; Jiang HM; ...; Kubo DY; ...; Li CT; Martin-Cocher P; Oshiro P; Raffin P; Wei TS; et al., "Array for Microwave Background Anisotropy: Observations, Data Analysis, and Results for Sunyaev-Zel'Dovich Effects" , ApJ: 694(2), 1619-1628, Apr 1, 2009 [SCI] ( ADS | Fulltext )
  24. Ho PTP; Altimirano P; Birkinshaw M; Chang SW; Chang CH; Chen KJ; Chen M; Chiueh TD; Chiueh T; Chu TH; Han CC; Huang CW; Huang YD; Hwang WYP; Hwang YJ; Jiang H; Kesteven M; Koch P; Kubo D; Lancaster K; Li CT; Liang H; Liao YW; Lim J; Lin YS; Lin KY; Liu GC; Lo KY; Ma CJ; Martin-Cocher P; Martin RN; Molnar S; Ng KW; Nishioka H; Park CG; Patt F; Peterson JB; Raffin P; Romano F; Wang H; Umetsu K; Wang FC; Wu JHP, "The Yuan Tseh Lee AMiBA Project" , MPLA: 23(20), 1243-1251, June, 2008 [SCI] ( ADS | Fulltext )
  25. Lu J-Y; Chiu C-M; Kuo C-C; ...; Hwang Y-J; et al., "Terahertz scanning imaging with a subwavelength plastic fiber" , Appl Phys Lett: 92(8), 084102, Feb 26, 2008 [SCI] ( ADS | Fulltext )
  26. Lu J-Y; Kuo C-C; Chiu C-M; ...; Hwang Y-J; et al., "THz interferometric imaging using subwavelength plastic fiber based THz endoscopes" , Opt Express: 16(4), 2494-2501, Feb 7, 2008 [SCI] ( ADS | Fulltext )
  27. Wu J-HP; Chiueh T-H; Huang C-W; Liao Y-W; Wang F-C; Altimirano P; Chang C-H; Chang S-H; Chang S-W; Chen M-T; Chereau G; Han C-C; Ho PTP; Huang Y-D; Hwang Y-J; Jiang H; Koch P; Kubo D; Li C-T; Lin K-Y; Liu G-C; Martin-Cocher P; Molnar S; Nishioka H; Raffin P; Umetsu K; et al., "AMiBA: First-Year Results for Sunyaev-Zel'dovich Effect" , MPLA: 23(17-20), 1675-1686, June, 2008 [SCI] ( ADS | Fulltext )
  28. Hwang Y-J; Rao R; Christensen R; Chen M-T; Chu T-H, "Submillimeter-Wave Phasor Beam-Pattern Measurement Based on Two-Stage Heterodyne Mixing With Unitary Harmonic Difference" , IEEE T Microw Theory: 55(6), 1200-1208, Jun, 2007 [SCI] ( ADS | Fulltext )
  29. Ho PTP; Chen M-T; ...; Chiueh T; Chu T-H; Jiang H; Koch P; Kubo D; Li C-T; ...; Lin K-Y; Liu G-C; Lo K-Y; Ma C-J; Martin RN; Ng K-W; Nishioka H; Patt F; ...; Wang H; Hwang Y-J; Umetsu K; et al., "The AMiBA Project" , MPLA: 19(13-16), 993-1000, May 30, 2004 [SCI] ( ADS | Fulltext )
  30. Hwang Y-J; Wang H; Chu T-H, "A W-band Subharmonically Pumped Monolithic GaAs-Based HEMT Gate Mixer" , IEEE Microw Wirel Co: 14(7), 313-315, Jul, 2004 [SCI] ( ADS | Fulltext )
  31. Hwang YJ; Lien CH; Wang H; ...; Chu TH, "A 78-114 GHz monolithic subharmonically pumped GaAs-based HEMT diode mixer" , IEEE Microw Wirel Co: 12(6), 209-211, 2002 [SCI] ( ADS | Fulltext )
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