Low Profile Silicon Interposer using Passive Integration (PICS)

2011 ◽  
Vol 2011 (DPC) ◽  
pp. 001918-001948
Author(s):  
Catherine Bunel ◽  
Stephane Bellenger ◽  
Sebastien Leruez ◽  
Lionel Lenoir ◽  
Franck Murray
Keyword(s):  
Printed Circuit Boards ◽  
Low Cost ◽  
3D Structure ◽  
Advanced Technology ◽  
Circuit Boards ◽  
Wafer Level ◽  
Low Profile ◽  
Bond Interface ◽  
Chip Attachment ◽  
Application Volume

Thanks to their 3D structure, the Silicon Capacitors offer drastic improvements in terms of performances compared to the commonly used ceramic and tantalum capacitors. They are also a smart way to reduce the application volume and increase the IP protection level. With the increasing complexity in the die and package designs and ever increasing cost pressure in today's microelectronic industry, IPDIA is offering for a large range of products, customized or standard components, a low cost packaging solution: the Wafer Level Chip Scale Packaging. While wire-bond interface may remain the preference for many applications, face-down direct chip attachment has gained wide acceptance. More than interacting on electrical functionality, WLCSP is interacting on mechanical and thermo mechanical properties with a higher miniaturization and a transfer directly on printed circuit boards without additional packaging steps. This paper presents the main characteristics of the 3D-IPD advanced technology emphasizing on its capability and advantages versus discrete components illustrated by different applications using ultra-thin IPD ( down to 60 μm ) and WLCSP.

Low-cost and compact 3D circularly polarized Microstrip antenna with high efficiency and wide beamwidth

2017 ◽  
Vol 9 (7) ◽  
pp. 1533-1540 ◽  
Author(s):  
Xi Chen ◽  
Zhen Wei ◽  
Dan Wu ◽  
Long Yang ◽  
Guang Fu
Keyword(s):  
Microstrip Antenna ◽  
Printed Circuit Boards ◽  
High Efficiency ◽  
Low Cost ◽  
3D Structure ◽  
Three Dimensional ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Circuit Boards ◽  
Circularly Polarized

A compact three-dimensional (3D) circularly polarized (CP) microstrip antenna is presented in this paper. The antenna adopts three low-cost printed circuit boards to form an integrated and closed 3D structure, and the radiation patch and the feed patches are etched on the surface of that. A crossed slot is cut on the radiation patch to miniaturize the antenna, and triangular feed patches are introduced to increase the bandwidths. In addition, because of the utilization of a low-loss series feed line, the antenna has a high efficiency of more than 95%. A prototype of the antenna is measured to validate the method. The dimensions of the antenna is 0.064λ × 0.36λ (λ is the wavelength in free space at 1.2 GHz). The results indicate that the impedance bandwidth for voltage standing wave ratio ≤ 2 reaches 23%, and the bandwidth for axial ratio (AR) ≤ 3 dB reaches 10.1%. In the overlap band, the gains are > 4.5dBic. Additionally, the 3 dB beamwidth is more than 114°, and the beamwidth for AR ≤ 3 dB is more than 131° at 1.2 GHz.

scholarly journals MeteoMex: Open infrastructure for networked environmental monitoring and agriculture 4.0

2020 ◽  
Author(s):  
Robert Winkler
Keyword(s):  
Food Production ◽  
Printed Circuit Boards ◽  
Low Cost ◽  
Environmental Sensors ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Smart Farming ◽  
Public Areas ◽  
Terrestrial Life ◽  
Iot Platforms

<div>Air, water, and soil are essential for terrestrial life, but pollution, overexploitation, and climate change jeopardize the availability of these primary resources. Thus, assuring human health and food production requires efficient strategies and technologies for environmental protection. Knowing key parameters such as soil moisture, air, and water quality is essential for smart farming and urban development. </div><div>The MeteoMex project aims to build simple hardware kits and their integration into current Internet-of-Things (IoT) platforms. This paper shows the use of low-end Wemos D1 mini boards to connect environmental sensors to the open-source platform ThingsBoard. Two printed circuit boards (PCB) were designed for mounting components. Analog, digital and I<sup>2</sup>C sensors are supported. The Wemos ESP8266 microchip provides WiFi capability and can be programmed with the Arduino IDE. Application examples for the MeteoMex aeria and terra kits demonstrate their functionality for air quality, soil, and climate monitoring.</div><div>Further, a prototype for monitoring wastewater treatment is shown, which exemplifies the capabilities of the Wemos board for signal processing. The data are stored in a PostgreSQL database, which enables data mining. The MeteoMex IoT system is highly scalable and of low cost, which makes it suitable for deployment in agriculture 4.0, industries, and public areas. </div><div>Circuit drawings, PCB layouts, and code examples are free to download from https://github.com/robert-winkler/MeteoMex.</div>

scholarly journals Single-Sided Near-Field Wireless Power Transfer by A Three-Dimensional Coil Array

Micromachines ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 200 ◽  
Author(s):  
Amirhossein Hajiaghajani ◽  
Seungyoung Ahn
Keyword(s):  
Magnetic Field ◽  
Printed Circuit Boards ◽  
Signal To Noise Ratio ◽  
Near Field ◽  
3D Structure ◽  
Three Dimensional ◽  
Power Transfer ◽  
Circuit Boards ◽  
Wireless Power ◽  
Halbach Arrays

Wirelessly powered medical microrobots are often driven or localized by magnetic resonance imaging coils, whose signal-to-noise ratio is easily affected by the power transmitter coils that supply the microrobot. A controlled single-sided wireless power transmitter can enhance the imaging quality and suppress the radiation leakage. This paper presents a new form of electromagnet which automatically cancels the magnetic field to the back lobes by replacing the traditional circular coils with a three-dimensional (3D) coil scheme inspired by a generalized form of Halbach arrays. It is shown that, along with the miniaturization of the transmitter system, it allows for improved magnetic field intensity in the target side. Measurement of the produced magnetic patterns verifies that the power transfer to the back lobe is 15-fold smaller compared to the corresponding distance on the main lobe side, whilst maintaining a powering efficiency similar to that of conventional planar coils. To show the application of the proposed array, a wireless charging pad with an effective powering area of 144 cm2 is fabricated on 3D-assembled printed circuit boards. This 3D structure obviates the need for traditional magnetic shield materials that place limitations on the working frequency and suffer from non-linearity and hysteresis effects.

Low-cost TO-CAN package combined with flexible and hard printed circuit boards for 25 - Gb / s optical subassembly modules

2017 ◽  
Vol 56 (2) ◽  
pp. 026108
Author(s):  
Jau-Ji Jou ◽  
Tien-Tsorng Shih ◽  
Cheng-Ying Wu ◽  
Zhe-Xian Su
Keyword(s):  
Printed Circuit Boards ◽  
Low Cost ◽  
Circuit Boards ◽  
Printed Circuit

scholarly journals A low-cost open-source 5-choice operant box system optimized for electrophysiology and optophysiology in mice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sampath K. T. Kapanaiah ◽  
Bastiaan van der Veen ◽  
Daniel Strahnen ◽  
Thomas Akam ◽  
Dennis Kätzel
Keyword(s):  
Open Source ◽  
Printed Circuit Boards ◽  
Low Cost ◽  
Cost Effective ◽  
Circuit Boards ◽  
Task Definition ◽  
Discovery Research ◽  
Reward Delivery ◽  
Drug Discovery Research ◽  
Turn Over

AbstractOperant boxes enable the application of complex behavioural paradigms to support circuit neuroscience and drug discovery research. However, commercial operant box systems are expensive and often not optimised for combining behaviour with neurophysiology. Here we introduce a fully open-source Python-based operant-box system in a 5-choice design (pyOS-5) that enables assessment of multiple cognitive and affective functions. It is optimized for fast turn-over between animals, and for testing of tethered mice for simultaneous physiological recordings or optogenetic manipulation. For reward delivery, we developed peristaltic and syringe pumps based on a stepper motor and 3D-printed parts. Tasks are specified using a Python-based syntax implemented on custom-designed printed circuit boards that are commercially available at low cost. We developed an open-source graphical user interface (GUI) and task definition scripts to conduct assays assessing operant learning, attention, impulsivity, working memory, or cognitive flexibility, alleviating the need for programming skills of the end user. All behavioural events are recorded with millisecond resolution, and TTL-outputs and -inputs allow straightforward integration with physiological recordings and closed-loop manipulations. This combination of features realizes a cost-effective, nose-poke-based operant box system that allows reliable circuit-neuroscience experiments investigating correlates of cognition and emotion in large cohorts of subjects.

scholarly journals Design and Implementation of Solder Paste Dispenser Based on Linear Drive System

2019 ◽  
Vol 3 (2) ◽  
pp. 338
Author(s):  
Riky Tri Yunardi ◽  
Moh. Zakky Zulfiar ◽  
Rr. Wanda Auruma Putri ◽  
Deny Arifianto
Keyword(s):  
Printed Circuit Boards ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Circuit Board ◽  
Solder Paste ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Design And Implementation ◽  
Stepper Motors ◽  
Drive Systems

In the technology to create prototypes for electronic hardware is usually constructed using surface mount device printed circuit board (SMD PCB). In this paper introduces the design and implementation of low-cost electrical solder paste dispenser that supports the PCB solder process. The design consists of a nozzle and linear drive systems based on stepper motors operating with electric power to push the plunger down to drop the solder paste on the board. To test the performance of solder paste that has been designed verified by experiment. Solder paste dispenser design was tested using SMD resistor with the solder pads of different sizes for R0603, R0805, and R1206 on PCB. The results showed that the design of the prototype was able to put the pasta in various field pads between 0.54 mm2, 0.91 mm2 and 1.44 mm2 for standard solder pads with an error in the 2% - 5%. Based on the results, the device has been shown to potentially be used to attach electronic components to printed circuit boards.

scholarly journals MeteoMex: open infrastructure for networked environmental monitoring and agriculture 4.0

2021 ◽  
Vol 7 ◽  
pp. e343
Author(s):  
Robert Winkler
Keyword(s):  
Food Production ◽  
Printed Circuit Boards ◽  
Low Cost ◽  
Environmental Sensors ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Smart Farming ◽  
Public Areas ◽  
Terrestrial Life ◽  
Iot Platforms

Air, water, and soil are essential for terrestrial life, but pollution, overexploitation, and climate change jeopardize the availability of these primary resources. Thus, assuring human health and food production requires efficient strategies and technologies for environmental protection. Knowing key parameters such as soil moisture, air, and water quality is essential for smart farming and urban development. The MeteoMex project aims to build simple hardware kits and their integration into current Internet-of-Things (IoT) platforms. This paper shows the use of low-end Wemos D1 mini boards to connect environmental sensors to the open-source platform ThingsBoard. Two printed circuit boards (PCB) were designed for mounting components. Analog, digital and I2C sensors are supported. The Wemos ESP8266 microchip provides WiFi capability and can be programed with the Arduino IDE. Application examples for the MeteoMex aeria and terra kits demonstrate their functionality for air quality, soil, and climate monitoring. Further, a prototype for monitoring wastewater treatment is shown, which exemplifies the capabilities of the Wemos board for signal processing. The data are stored in a PostgreSQL database, which enables data mining. The MeteoMex IoT system is highly scalable and of low cost, which makes it suitable for deployment in agriculture 4.0, industries, and public areas. Circuit drawings, PCB layouts, and code examples are free to download from https://github.com/robert-winkler/MeteoMex.

Sign in / Sign up

Export Citation Format

Share Document