Academia Sinica Institute of Astronomy & Astrophysics
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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, outlook of the corrugated short backfire antenna
cold cartridge assembly and warm cartridge assembly
The computer simulated mechanical layout of the ALMA Band-1 receivers
31 - 50 GHz Cryogenic HEMT Cascode Mixer
Hybrid RF low-noise amplifier for 700~945 MHz observations
Microwave Device Laboratory
The first SZE signal with the 7-element AMiBA
The AMiBA receiver with the vacuum chamber removed
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.
Ultra-low-phase-noise broadband tuning voltage-controlled transistor oscillators, the packaged circuit module.
The SMA Receivers Upgrade
Cryogenically coolde 31-50GHz MHEMT MMIC LNA Modules
A prototype W-band mixer developed for the AMiBA project
Hwang, Yuh-Jing
Associate Research Fellow
photo of Hwang, Yuh-Jing
Office: ASMAB 1013
TEL: +886-2-2366-5340
FAX: +886-2-2367-7849

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.

Recent Journal Papers

Complete List of Publications

  1. J.-H. Hu, C.-C. Chiong, Y.-J. Hwang, and Z.-M. Tsai, "E-Band Mixer with IP1dB Design Consideration for Radio Astronomical Instrumentation" , IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS: 28(5), pp. 452-454, 2018-05 [SCI]
  2. Tseng TF; Lai CH; Lu JT; Tsai YF; Hwang YJ; Sun CK, "Investigation on Strong Coupling Behaviors of THz Subwavelength Directional Couplers" , IEEE Photonics Journal: 4(6), 2307-2314, 2012-12 [SCI] (Fulltext)
  3. 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" , OPTICS EXPRESS: 19(22), 21552-21562, 2011-10 [SCI] (Fulltext)
  4. Lu J-T; Lai C-H; Tseng T-F; ...; Hwang Y-J; et al., "Terahertz polarization-sensitive rectangular pipe waveguides" , OPTICS EXPRESS: 19(22), 21532-21539, 2011-10 [SCI] (Fulltext)
  5. Lu JT; Hsueh YC; Huang YR; Hwang YJ; et al, "Bending loss of terahertz pipe waveguides" , OPTICS EXPRESS: 18(25), 26332-26338, 2010-12 [SCI] (Fulltext)
  6. G.-C. Liu; M. Birkinshaw; J.-H.P. Wu; P.T.P. Ho; C.-W.L. Huang; Y.-W. Liao; K.-Y. Lin; S.M. Molnar; H. Nishioka; P.M. Koch; K. Umetsu; F.-C. Wang; P. Altamirano; C.-H. Chang; S.-H. Chang; S.-W. Chang; M.-T. Chen; C.-C. Han; Y.-D. Huang; Y.-J. Hwang; H. Jiang; M. Kesteven; D. Kubo; C.-T. Li; P. Martin-Cocher; P. Oshiro; P. Raffin; T. Wei; W. Wilson , "Contamination of the Central Sunyaev-Zel'dovich Decrements in AMiBA Galaxy Cluster Observations" , ASTROPHYSICAL JOURNAL: 720(1), 608-613, 2010-09 [SCI] (Fulltext)
  7. Li CT; Kubo DY;...; 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" , Astrophysical Journal: 716(1), 746-757, 2010-06 [SCI] (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" , ASTROPHYSICAL JOURNAL: 716(1), 758-765, 2010-06 [SCI] (Fulltext)
  9. Huang YW; Tseng TF; Kuo CC; Hwang YJ; Sun CK , "Fiber-based swept-source terahertz radar" , Optics Letters: 35(9), 1344-1346, 2010-05 [SCI]
  10. 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" , Astrophysical Journal: 713(1), 584-591, 2010-04 [SCI] (Fulltext)
  11. Lai CH; Hsueh YC; Chen HW; Huang YJ; al., "Low-index terahertz pipe waveguides" , OPTICS LETTERS: 34(21), 3457-3459, 2009-11 [SCI] (Fulltext)
  12. Lin Y-S; Hsieh Y-S; Chiong C-C; Hwang Y-J, "Q-band GaAs bandpass filter design for ALMA band-1" , IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS: 19(6), 353-355, 2009-06 [SCI] (Fulltext)
  13. Chen H-W; Chiu C-M; Lai C-H; ...; Hwang Y-J; et al., "Sub-Wavelength Dielectric-Fiber-Based THz Coupler" , JOURNAL OF LIGHTWAVE TECHNOLOGY: 27(11), 1489-1495, 2009-06 [SCI] (Fulltext)
  14. Chin CM; Chen HW; Huang YR; Hwang YJ; et al., "All-terahertz fiber-scanning near-field microscopy" , OPTICS LETTERS: 34(7), 1084-1086, 2009-04 [SCI] (Fulltext)
  15. Chen MT; Li CT; Hwang YJ; et al., "AMiBA: Broadband Heterodyne CMB Interferometry" , ASTROPHYSICAL JOURNAL: 694(2), 1664-1669, 2009-04 [SCI] (Fulltext)
  16. Lin KY; Li CT; Ho PTP; et al., "AMiBA: System Performance" , ASTROPHYSICAL JOURNAL: 694(2), 1629-1636, 2009-04 [SCI] (Fulltext)
  17. 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" , ASTROPHYSICAL JOURNAL: 694(2), 1619-1628, 2009-04 [SCI] (Fulltext)
  18. Umetsu K; ...; Liu GC; Ho PTP; Koch PM; et al., "Mass and Hot Baryons in Massive Galaxy Clusters from Subaru Weak Lensing and AMiBA Sunyaev-Zel'dovich Effect Observations" , ASTROPHYSICAL JOURNAL: 694(2), 1643-1663, 2009-04 [SCI] (Fulltext)
  19. Nishioka H; ...; Ho PTP; Koch PM; Lin K-Y; et al., "Tests of AMiBA Data Integrity" , ASTROPHYSICAL JOURNAL: 694(2), 1637-1642, 2009-04 [SCI] (Fulltext)
  20. Ho PTP; Altamirano P; Chang CH; Chang SH; et al., "The Yuan-Tseh Lee Array for Microwave Background Anisotropy" , ASTROPHYSICAL JOURNAL: 694(2), 1610-1618, 2009-04 [SCI] (Fulltext)
  21. Wu JHP; Chiueh TH; ...; Chang C-H; Chang S-H; Chang S-W; et al., "AMiBA: First-Year Results for Sunyaev-Zel'dovich Effect" , MODERN PHYSICS LETTERS A: 23(17-20), 1675-1686, 2008-06 [SCI] (Fulltext)
  22. Ho PTP; Altimirano P;...; Chang S-W; Chang C-H; Chen MT; et al., "The Yuan Tseh Lee AMiBA Project" , MODERN PHYSICS LETTERS A: 23(20), 1243-1251, 2008-06 [SCI] (Fulltext)
  23. Lu J-Y; Chiu C-M; Kuo C-C; ...; Hwang Y-J; et al., "Terahertz scanning imaging with a subwavelength plastic fiber" , APPLIED PHYSICS LETTERS: 92(8), 084102, 2008-02 [SCI] (Fulltext)
  24. Lu J-Y; Kuo C-C; Chiu C-M; ...; Hwang Y-J; et al., "THz interferometric imaging using subwavelength plastic fiber based THz endoscopes" , OPTICS EXPRESS: 16(4), 2494-2501, 2008-02 [SCI] (Fulltext)
  25. 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 TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES: 55(6), 1200-1208, 2007-06 [SCI] (Fulltext)
  26. Hwang Y-J; Wang H; Chu T-H, "A W-band Subharmonically Pumped Monolithic GaAs-Based HEMT Gate Mixer" , IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS: 14(7), 313-315, 2004-07 [SCI] (Fulltext)
  27. 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" , MODERN PHYSICS LETTERS A: 19(13-16), 993-1000, 2004-05 [SCI] (Fulltext)
  28. Hwang YJ; Lien CH; Wang H; ...; Chu TH, "A 78-114 GHz monolithic subharmonically pumped GaAs-based HEMT diode mixer" , IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS: 12(6), 209-211, 2002 [SCI] (Fulltext)
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