Research Gallery

16GHz, 4 bit adc board for FMC connector (...more)

Internal photos of Laser Synthesizer instrument: left - top view of optical circuitry including Erbium Doped Fiber Amplifier and custom Fiber Bragg Grating filter assembly; right - bottom view of (...more)

The main function of this GLT instrument (CAB-A11) is to down-convert the input 4-8GHz IF signal from the receiver to 50MHz and output to vector voltmeter for phase calculation with (...more)

This custom instrument integrates the ALMA FEMC (FrontEnd Monitor&Control) and various DC switching power supply together to drive the GLT receiver and enable to monitor critical component (SIS mixer, LNA, (...more)

Two GLT receivers for VLBI, the 86GHz one is a re-packaged design base on AMiBA project and the 230GHz receiver is a cooperation output with Osaka Prefect University. (...more)

ALMA Band 1 project first 6 pre-production warm cartyridge assemblies (...more)

ALMA Band 1 project first 6 pre-production cold cartridge assemblies. (...more)

The OM image of micro-lamp for the calibration source of SAFARI. The hot area is about 260x260 um^2 which is heated by chrome film heater and thermally isolated by four (...more)

A 30-50 GHz (50% fractional bandwidth) cryogenic orthomode transducer is fabricated with low insertion loss and cross-polarization. (a) Top view with input circular waveguide port, (b) Bottom view with two (...more)

A down-conversion method involving digital sideband separation is adopted for the Yuan-Tseh Lee Array (YTLA) to double the processing bandwidth. The sideband separation scheme includes an analog 90° hybrid followed (...more)

The Tomographic Ionized-carbon Mapping Experiment (TIME) adopted a grating type spectrometer to achieve instantaneous wideband spectral coverage with background-limited sensitivity. A unique approach uses curved gratings in parallel-plate waveguides to (...more)

The cross-sectional view of superconducting NbN ultrathin film (...more)

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) (...more)

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) (...more)

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: (...more)

The computer simulated mechanical layout of the ALMA Band-1 receivers. (...more)

Receiver Laboratory (...more)

Processing Room-2 (...more)

Lithography Room-2 (...more)

The performances of developed SIS mixers for KVN, SMA, and ALMA band-10 mixers. The noise of receiver, tested in lab, includes the noise contribution of IF chain of 10K. (...more)

The top and cross-sectional view of HEB (hot-electron-bolometer) mixers. (...more)

The image of SQUID chip for a SQUID-STM (SSTM) system. (...more)

Image of SQUID (superconducting quantum interference device) chip with a 10 um direct-couple loop. (...more)

The top and cross-sectional view of SIS mixer for ALMA band-10 frequency. (...more)

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 (...more)

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. (...more)

The 13-element, 1.2 meter-dish Yuan T. Lee AMiBA on the Mauna Loa Observatory, Hawaii. (...more)

Optical/Infrared Laboratory (...more)

Microwave Device Laboratory (...more)

Superconducting Device Laboratory (...more)

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 (...more)

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 (...more)

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 (...more)

Magnified view of the cryogenic IF amplifier packaged with input/output microstrip lines and bypass capacitors. The chip size is 2mm×1mm. This device is designed for future wide-IF SMA SIS receiver. (...more)

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 (...more)

Wide IF Band Receiver (...more)

The 8-bit, 5 Giga Samples/sec analog-to-digital converter (ADC) developed in ASIAA. This board is the first product from our digital signal processing (DSP) effort in support of the Collaboration for (...more)

Mixer Performance Testing System -2 (...more)

The Canon 50M pixel camera and the testing setup for the centroid calculation. (...more)

The Canon 50M pixel camera and the testing setup for the centroid calculation. (...more)

The layout of TAOS2 CMOS sensor. (...more)

Top: The interface board and the 320x256 InGaAs array for the characterization system. Left: the AFM image of the QDs used in QDIPs. Right: the average charge inside the QDs (...more)

Clean room for Nb-based superconducting device fabrication at Tsing-Hua campus, Hsin-Chu, Taiwan (about 100 km from Taipei). (...more)

Clean room for Nb-based superconducting device fabrication at Tsing-Hua campus, Hsin-Chu, Taiwan (about 100 km from Taipei). (...more)

Post Processing Room-2 (...more)

The images of IDP (integrated dual polarization) mixer chip (...more)

The mixer block for IDP (integrated Dual polarization) mixer (...more)

Some of the key people associated with the Greenland Telescope (GLT) project posting in front of the ALMA NA prototype antenna.The GLT project will retrofit and redeploy this antenna to (...more)

The filter exchanger of Subaru Hyper SuprimeCam inside the Subaru telescope dome. (...more)

Hyper SuprimeCam installed on Subaru telescope (...more)

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. (...more)

10 Giga samples per second Analog to Digital Printed Circuit Board is developing by digital group of the Institute. (...more)

Wide IF band (4-12GHz) SIS receiver for SMA project (...more)

The mixer is fabricated using ASIAA junction process. The performance is verified by NAOJ band-10 team. The receiver noise temperature is quite close to the specifications of ALMA band-10 reciever. (...more)

The AMiBA project, observing at 3 mm wavelength, is an important initiative to develop our observational cosmology program in a very competitive field of science. This project has challenged several (...more)

Phase-locked loop evaluation board for GaAs HBT Voltage-Controlled Oscillator MMIC module (...more)

A niobium SIS mixer developed in ASIAA to operate at 850 GHz. The establishment of the SIS fabrication facility in ASIAA is one of the most important milestones in the (...more)

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 (...more)

A MMIC Layout of a voltage-control-oscillator ready for fabrication in a local semiconductor foundry. This is a development project to facilitate our MMIC design and fabrication capability, which may benefit (...more)

The Submillimeter Array, an eight-element radio telescope ensemble in the foreground of the figure, is currently one of the most powerful telescopes directly accessible by the astronomers in Taiwan. With (...more)