Design considerations for the hot embossing of microstrip antennas on plastic foils

2009 ◽  
Vol 1 (4) ◽  
pp. 249-254
Author(s):  
Andreas Kilian ◽  
Michael Fuchs ◽  
Lorenz-Peter Schmidt
Keyword(s):  
Millimeter Wave ◽  
Low Cost ◽  
Three Dimensional ◽  
Hot Embossing ◽  
Microstrip Antennas ◽  
Design Guidelines ◽  
Printed Antennas ◽  
Design Considerations ◽  
Radar Applications ◽  
Plastic Parts

In this contribution, fundamental design considerations for a novel metallization technique to realize millimeter-wave microstrip structures are presented. This hot embossing technology is a fast and economic process originating from the production of three-dimensional molded interconnect devices. Conductive structures are coated onto plastic parts or plastic foils using a heated stamp. This approach shows high potential and therefore will be investigated for the fabrication of low-cost printed antennas at millimeter-wave frequencies. The focus of this contribution is on design guidelines considering process parameters and interactions with substrate and copper foil characteristics derived from the fabrication and measurement of single microstrip patch antenna prototypes for radar applications in the industrial, scientific and medical (ISM) band at 24 GHz. Far-reaching potential lies in the utilization of the three-dimensional manufacturing technology for the construction of conformal integrated antenna systems based on the thermoforming capabilities of polymer substrates.

Low-cost three-dimensional millimeter-wave holographic imaging system based on a frequency-scanning antenna

2017 ◽  
Vol 57 (1) ◽  
pp. A65
Author(s):  
Vahid Amin Nili ◽  
Ehsan Mansouri ◽  
Zahra Kavehvash ◽  
Mohammad Fakharzadeh ◽  
Mahdi Shabany ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Imaging System ◽  
Low Cost ◽  
Three Dimensional ◽  
Holographic Imaging ◽  
Frequency Scanning ◽  
Scanning Antenna

Three-dimensional MMIC technology for low-cost millimeter-wave MMICs

2001 ◽  
Vol 36 (9) ◽  
pp. 1351-1359 ◽  
Author(s):  
K. Nishikawa ◽  
K. Kamogawa ◽  
B. Piernas ◽  
M. Tokumitsu ◽  
S. Sugitani ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Low Cost ◽  
Three Dimensional

scholarly journals Directive Microstrip Antennas for Specific Below −2.45 GHz Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
E. Ávila-Navarro ◽  
C. Reig
Keyword(s):  
Low Cost ◽  
Microstrip Antennas ◽  
Experimental Characterization ◽  
Radiation Patterns ◽  
Printed Antennas ◽  
High Data ◽  
Full Wave ◽  
Log Periodic Antenna

Microstrip printed antennas are the preferred choice in high data ratio modern communications, mainly at 2.45 GHz and above. In this paper, we propose two different approaches of microstrip printed antennas for lower frequency usage. In this sense, we present a printed microstrip Yagi-like antenna at 868 MHz and a printed dipole log-periodic antenna for wider band applications. We focus on the use of low-cost substrates, with a good performance at these frequencies, and giving antennas with useful sizes for such applications. For the analysis, we make use of standard experimental characterization combined with full-wave 3D-FDTD specifically developed simulations. In this way, the S11, radiation patterns, and gain/efficiency figures are given.

Variable Geometry Dies for Polymer Extrusion

2014 ◽  
Author(s):  
Kevin S. Giaier ◽  
David H. Myszka ◽  
Wesley P. Kramer ◽  
Andrew P. Murray
Keyword(s):  
Cross Section ◽  
Low Cost ◽  
Experimental Studies ◽  
Design Guidelines ◽  
Variable Geometry ◽  
Polymer Extrusion ◽  
High Production Rate ◽  
High Production ◽  
Plastic Parts ◽  
Extrusion Technology

This paper presents the development of variable geometry dies that enable the extrusion of plastic parts with a varying cross section. Extrusion accounts for 40% of all manufactured plastic parts because it is a relatively low-cost and high-production-rate process. Conventional polymer extrusion technology, however, is limited to fixed dies that produce continuous plastic products of constant cross section defined by the die exit profile. A shape-changing die allows the cross section of the extruded part to change over its length, thereby introducing the capacity to manufacture plastic faster and with lower tooling costs than injection molding. This paper discusses design guidelines that were developed for movable die features including revolute and prismatic joint details, land length, and the management of die leakage. To assess these guidelines, multiple dies have been designed and constructed to include an arbitrary four-sided exit profile where changes were made to the internal angles and length of sides as the extruder was operating. Experimental studies were conducted by using different extruder line settings and time between die movements. Test results are presented that include shape repeatability and the relationship between extrudate profile and die exit geometry.

A low-cost millimeter-wave whispering gallery-mode-based sensor: design considerations and accurate analysis

2012 ◽  
Vol 4 (3) ◽  
pp. 341-348 ◽  
Author(s):  
Aidin Taeb ◽  
Mohammad Neshat ◽  
Suren Gigoyan ◽  
Safieddin Safavi-Naeini
Keyword(s):  
Millimeter Wave ◽  
Variational Analysis ◽  
Dielectric Waveguide ◽  
Low Cost ◽  
Whispering Gallery Mode ◽  
Sensor Design ◽  
Analysis Method ◽  
Accurate Analysis ◽  
Whispering Gallery ◽  
Design Considerations

A dielectric waveguide-based structure coupled to a whispering gallery mode (WGM) disc resonator is introduced as a low-cost integrable millimeter-wave (mm-wave) bio-sensor. An efficient variational analysis method is developed and applied to the WGM. Three sets of sensors, operating in different ranges of frequency from 85 to 220 GHz, are fabricated and tested. The performance of the fabricated bio-sensor is demonstrated for sensing different concentrations of glucose solution samples at D-band. Also, the sensitivity, selectivity, and repeatability of these sensors are examined.

Fabrication of 3D Temperature Sensor Using Magnetostrictive Inkjet Printhead

2020 ◽  
Vol 64 (5) ◽  
pp. 50405-1-50405-5
Author(s):  
Young-Woo Park ◽  
Myounggyu Noh
Keyword(s):  
Flexible Electronics ◽  
Inkjet Printing ◽  
Temperature Sensor ◽  
Computer Aided Design ◽  
Low Cost ◽  
Three Dimensional ◽  
Drop On Demand ◽  
Aided Design ◽  
Nanoparticle Ink ◽  
Inkjet Printhead

Abstract Recently, the three-dimensional (3D) printing technique has attracted much attention for creating objects of arbitrary shape and manufacturing. For the first time, in this work, we present the fabrication of an inkjet printed low-cost 3D temperature sensor on a 3D-shaped thermoplastic substrate suitable for packaging, flexible electronics, and other printed applications. The design, fabrication, and testing of a 3D printed temperature sensor are presented. The sensor pattern is designed using a computer-aided design program and fabricated by drop-on-demand inkjet printing using a magnetostrictive inkjet printhead at room temperature. The sensor pattern is printed using commercially available conductive silver nanoparticle ink. A moving speed of 90 mm/min is chosen to print the sensor pattern. The inkjet printed temperature sensor is demonstrated, and it is characterized by good electrical properties, exhibiting good sensitivity and linearity. The results indicate that 3D inkjet printing technology may have great potential for applications in sensor fabrication.

Constructive Optimisation of the Propeller Type Mixing Devices Using the Virtual and Rapid Prototyping

2017 ◽  
Vol 68 (3) ◽  
pp. 453-458 ◽  
Author(s):  
Daniel Besnea ◽  
Alina Spanu ◽  
Iuliana Marlena Prodea ◽  
Gheorghita Tomescu ◽  
Iolanda Constanta Panait
Keyword(s):  
Rapid Prototyping ◽  
Low Cost ◽  
Scale Up ◽  
Three Dimensional ◽  
Rapid Identification ◽  
Multidisciplinary Optimization ◽  
External Diameter ◽  
Process Industries ◽  
Parametric Cad ◽  
Shaft Torque

The paper points out the advantages of rapid prototyping for improving the performances/constructive optimization of mixing devices used in process industries, here exemplified to propeller types ones. The multidisciplinary optimization of the propeller profile affords its design using parametric CAD methods. Starting from the mathematical curve equations proposed for the blade profile, it was determined its three-dimensional virtual model. The challenge has been focused on the variation of propeller pitch and external diameter. Three dimensional ranges were manufactured using the additive manufacturing process with Marker Boot 3D printer. The mixing performances were tested on the mixing equipment measuring the minimum rotational speed and the correspondent shaft torque for complete suspension achieved for each of the three models. The virtual and rapid prototyping method is newly proposed by the authors to obtain the basic data for scale up of the mixing systems, in the case of flexible production (of low quantities), in which both the nature and concentration of the constituents in the final product varies often. It is an efficient and low cost method for the rapid identification of the optimal mixing device configuration, which contributes to the costs reduction and to the growing of the output.

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