Applications

In order to evaluate the performance of an antenna receiver installation, a special attenuator kit has been designed. It consists of 4 calibrated attenuators. The main advantage of this method is the ease of calibrating antennas without disconnecting the wiring of the system. The base material is ECCOSORB® LS-material.  
A full service manufacturer of frequency control devices sought to encapsulate several toroidal inductors in one of their 250 MHz High Power RF Filters with ECCOSTOCK® FFP.  These inductors (shown after potting at right undergo extreme vibration throughout its lifespan and without being properly staked in place, they would eventually vibrate loose causing the equipment to malfunction.  
Scientists at the National Radio Astronomy Observatory (NRAO) contacted Emerson & Cuming Microwave Products to assist with solving an RF leakage problem in the ALMA Local Oscillator Subsystem.  The solution needed to be compressible to form a reliable seal without the use of screws to bolt the flanges together and still absorb RF up to 140 GHz.  Engineers at Emerson & Cuming Microwave Products suggested ECCOSORB® BSR-1/SS6M, a silicone rubber sheet with a peel and stick adhesive (SS6M), due to its high-frequency performance and compressibility characteristics.  The BSR-1/SS6M was supplied as round precut parts and used as part of a millimeter-wave blind-mating system for the ALMA receivers.  The absorber (shown at left in gray) sat within a machined recess around the waveguide flange forming both an RF and hermetic seal against the mating surface, which is flat.  Applicatione Note
ECCOSTOCK® FPH/12-4H, a pink, high-temperature, low dielectric constant polyurethane foam was selected as a staking compound for use in lumped low-pass band filters capable of 5000W of radio frequency RF power.  By staking these coils in place, the filter now has excellent mechanical and thermal stability, but still allows tuning and adjustment in the final assembly steps.
ECCOSORB® MF-117, a magnetically loaded epoxy, was selected for a high frequency (84-116 GHz) waveguide termination used in the international Atacama Large Millimeter Array (ALMA).  The RF performance of this load was measured using a 75-116 GHz Vector Network Analyzer. The reflected signal from the load was attenuated by more than 20 dB across the entire RF bandwidth.  Application Note
It is imperative that communication antennas exhibit high directivity.  The effect of sidelobes on a receive antenna can cause it to become vulnerable to antenna noise from stray signals outside the main source.   Therefore, extraneous signals such as side lobes must be minimized.  ECCOSORB® HR can be used to line the inside of a metallic shroud to eliminate reflections and increase the directivity of the parabolic antenna.  Application Note
A wireless electronic shelf labeling system is composed of a small communication base station, a free standing controller unit that communicates with a stores point-of-sale system, and small wireless receiver (seen at right) in the shape of a price tag.  A special die cut ECCOSORB® LS-30/SS3 part at ½” thick, used as an insertion loss absorber, was chosen and successfully used as an upright partition between the two sections of the board to pass FCC regulations. 
Medium power klystrons are used in ground-based earth-to-satellite communications, amplifiers (KPA's) and troposcatter communication terminals. Used as a tuning element in the lab, a sheet of ECCOSORB® MF is placed over the top of a Solid State PA in place of the metal cover.  The lab technician can then tune the amplifier to peak performance.  Once correctly tuned, amplifier covers are then lined with ECCOSORB® MFS-117/SS6M precut parts in predetermined areas.
Two sheets of ECCOSORB® AN-77 can be sandwiched together (back to back) and placed between the two flat panel antennas of a Stratum ODU (out-door unit) to simulate the path loss between two flat panel antennas.
Specially formulated Mold-in-Place (MIP) absorber was used in this housing to reduce cavity resonances.  Traditionally an elastomeric absorber would be die cut and held in place with a peel and stick adhesive.  However, in this application due to the amount of cavities requiring absorber the manual time involved for placing it would be cost prohibitive.  As such the MIP absorber was cast directly into the housing for a clean finish.
Mechanical step attenuators with ECCOSORB® CR cast directly into them.
Flexible ECCOSORB® MFS-124 is precisely placed in this radar detector module as waveguide terminations.