Materials / Packaging

MATERIALS / PACKAGING CASE STUDIES AND WHITE PAPERS

More Materials / Packaging Case Studies and White Papers

MATERIALS / PACKAGING PRODUCTS

Space Level Quartz Crystals

Space Level Quartz Crystals

Space level quartz crystals by Bliley are manufactured with premium Q, swept quartz material traceable to the quartz bar and growing autoclave. From the quartz bar to the finished crystal, 100% of the manufacturing takes place in the USA.

Ceramic Feedthroughs

Ceramic Feedthroughs

Ceramic Feedthroughs are compatabile high Titanium, AISi, Kovar, Alloy 42, CuMo, and CuW, and are highly reliable in high vacuum applications. This makes them ideal for military/aerospace, and high reliability industrial applications. AdTech Ceramics’ feedthroughs can support high frequency applications up to 30GHz and feature a coplanar surface for wire bonding. Design assistance and HFSS simulation are available for high frequency applications as well.

QFN Packaging

QFN Packaging

As with all of our high reliability products, MMIC assembly and test services are centered on our MIL-PRF-38534 qualified assembly processes. Each design is documented and engineered to be assembled using these qualified processes. Need micro strips with your QFN? We are vertically integrated so we can manufacture them in our in-house thin film fab.

Circuit Board and MMIC Packaging Overview

Circuit Board and MMIC Packaging Overview

TMS, formerly Teledyne LabTech, has developed custom packaging that caters to a range of MMIC designs, cavity dimensions and flexible footprint options. We have developed unique small and large format metal backed PTFE substrates with integrated heatsinks for amplifier and antenna applications through 94 GHz.

Thick Film, Thin Film and Electronic Packages

Thick Film, Thin Film and Electronic Packages

Mini-Systems manufactures high reliability, precision Thick Film chip resistors and jumpers for frequencies to 10 Ghz. Thin Film chip resistors, resistor arrays, chip attenuators, MOS style capacitors, and RC networks, DC through 20 Ghz. Electronic Packages Alumina/Glass sidewall flatpacks. For more on Mini-Systems, visit their storefront.

Aluminum Nitride Substrates

Aluminum Nitride Substrates

Aluminum nitride substrates are ideal for high power amplifier multichip modules and heater applications, as well as imaging applications. This is because its material system is stable from cryogenic to high temperatures. Aluminum nitride also features high thermal conductivity with an excellent coefficient of thermal expansion (CTE) match to silicon.

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About Nutrient Removal

Nutrient removal from wastewater consists of treating wastewater to remove nitrogen and phosphorus before it reenters natural waterways. High levels of nitrogen and phosphorus in wastewater cause eutrophication, a process where excess nutrients stimulate excessive plant growth such as algal blooms and cyanobacteria. The decomposition of the algae by bacteria uses up the oxygen in the water causing other organisms to die. This creates more organic matter for the bacteria to decompose. In addition, some algal blooms can produce toxins that contaminate drinking water supplies.

As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program regulates point sources, such as municipal wastewater treatment plants, that discharge pollutants as effluent into the waters of the United States. In recent years, many of the States’ environmental bodies have lowered nutrient limits to arrest eutrophication. Maryland’s effort to protect the Chesapeake Bay and its tidal tributaries is perhaps the most notable example of nutrient removal in the US. Nutrient removal continues to be a growing area of focus for wastewater treatment throughout the world.   

The removal of nitrogen and phosphorus require different nutrient removal processes. To remove nitrogen, the nitrogen is oxidized from ammonia to become nitrate through a process called nitrification. This process is then followed by denitrification where the nitrate is reduced to nitrogen gas which is released to the atmosphere and removed from the wastewater.

Nitrification is a two-step aerobic process which typically takes place in aeration tanks. Denitrification requires anoxic conditions to encourage the appropriate biological conditions to form. The activated sludge process is often used to reduce nitrate to nitrogen gas in anoxic or denitrification tanks.

Phosphorus can be removed biologically using polyphosphate accumulating organisms (PAOs) which accumulate large quantities of phosphorus within their cells and separate it from treated water. Phosphorus removal can also be achieved by chemical removal. Once removed as sludge, phosphorus may be stored in a land fill. However, many municipalities and treatment facilities are looking to resell the biosolids for use in fertilizer.