Nondestructive Inspection of Chip Size Package by Millimeter Waves

2003 ◽  
Author(s):  
Yang Ju ◽  
Hiroshi Yamamoto ◽  
Masumi Saka
Keyword(s):  
Millimeter Wave ◽  
Millimeter Waves ◽  
Coaxial Line ◽  
Good Prospect ◽  
Network Analyzer ◽  
Integrity Assessment ◽  
Solder Bumps ◽  
Chip Size ◽  
Wave Technique ◽  
Wave Image

Chip size package was inspected by millimeter waves. Millimeter wave image was created using the phase and amplitude of the reflection coefficient, measured by a network analyzer. To obtain a high spatial resolution, an open-ended coaxial line sensor was used. Solder bumps and delamination under the silicon chip of the package were observed effectively. It is shown that millimeter wave technique has a good prospect for integrity assessment of chip size package.

Polymer-based micromachined rectangular coaxial filters for millimeter-wave applications

2011 ◽  
Vol 3 (2) ◽  
pp. 115-120 ◽  
Author(s):  
Aline Jaimes-Vera ◽  
Ignacio Llamas-Garro ◽  
Maolong Ke ◽  
Yi Wang ◽  
Michael J. Lancaster ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Millimeter Waves ◽  
Return Loss ◽  
Low Cost ◽  
Coplanar Waveguide ◽  
Coaxial Line ◽  
Center Conductor ◽  
Low Cost Manufacturing ◽  
Insertion Losses ◽  
Better Than

In this paper, micromachined devices for millimeter-wave applications at U- and V-bands are presented. These structures are designed using a rectangular coaxial line built of gold-coated SU-8 photoresist layers, where the coaxial center conductor is suspended in air by stubs. The designs include a stepped coplanar waveguide (CPW)-to-coaxial transition at 63 GHz, with an insertion loss of 0.39 dB at 67.75 GHz and a return loss better than −10 dB across the band of operation between 54.7 and 70.3 GHz. Two filters have been designed; one centered at 42 GHz with a 10% bandwidth, and another at 63 GHz with a 5% bandwidth. Measured insertion losses of 0.77 and 2.59 dB were obtained for these filters, respectively. Measured return loss lower than 13.8 dB over the passband was achieved for both designs. The structures presented in this paper involve a low-cost manufacturing process suitable to produce integrated subsystems at millimeter waves.

scholarly journals Thin Films Prepared from Nanometer Size TiO2Absorbs Millimeter Waves

2012 ◽  
Vol 2012 ◽  
pp. 1-5
Author(s):  
Mehmet Ali Yesil ◽  
Korkut Yegin ◽  
Mustafa Culha ◽  
Esen Efeoglu
Keyword(s):  
Thin Film ◽  
Millimeter Wave ◽  
Millimeter Waves ◽  
Network Analyzer ◽  
Convective Assembly ◽  
Millimeter Wave Range ◽  
Measured Absorption ◽  
Assembly Technique ◽  
Wave Range ◽  
Glass Surfaces

Absorption of average 10 nm size TiO2nanoparticles deposited on glass surfaces as a thin film using convective assembly technique and drop-casting is studied in the millimeter wave range from 26 GHz to 40 GHz. The millimeter wave responses of the fabricated samples were obtained using a vector network analyzer. Reflection properties of the prepared samples were also measured. Absorption and reflection of TiO2nanoparticles were more pronounced between 35 GHz and 40 GHz compared to glass-only sample.

scholarly journals Application of Temperature-Dependent Fluorescent Dyes to the Measurement of Millimeter Wave Absorption in Water Applied to Biomedical Experiments

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Nataliia Kuzkova ◽  
Oleksandr Popenko ◽  
Andrey Yakunov
Keyword(s):  
Millimeter Wave ◽  
Millimeter Waves ◽  
Temperature Effects ◽  
Fluorescent Dyes ◽  
Organic Dyes ◽  
Temperature Dependent ◽  
Wave Absorption ◽  
Biological Objects ◽  
Novel Method ◽  
Local Temperature Increase

Temperature sensitivity of the fluorescence intensity of the organic dyes solutions was used for noncontact measurement of the electromagnetic millimeter wave absorption in water. By using two different dyes with opposite temperature effects, local temperature increase in the capillary that is placed inside a rectangular waveguide in which millimeter waves propagate was defined. The application of this noncontact temperature sensing is a simple and novel method to detect temperature change in small biological objects.

A Millimeter-wave Image Sensor using Antenna Coupled Micro Thermocouple

2001 ◽  
pp. 586-589 ◽  
Author(s):  
Dae-Sung Lee ◽  
Kyoung-iL Lee ◽  
Se-Hong Chang ◽  
Hak-In Hwang
Keyword(s):  
Millimeter Wave ◽  
Image Sensor ◽  
Wave Image
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