MDM microwave varactors
Glavkosmos
Uncased microwave varactor capacitors built on thin semiconductor and dielectric membranes for use in phase shifter modules of space-based AESA radar and communication systems.
Key figurescomparable across the catalogue
- Mass
- 0 kg
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Range of nominal values of set of capacitors
- from 1.0 to 500 Petafarad
- Operating frequency
- > 50 GHz
- Breakdown voltage
- > 40 V
- The tangent of the dielectric loss angle
- < 0.01
- Time between failures
- 100 000 hours
- The thickness of the capacitor
- 15 microns
- Mass
- 0.003 g
About
MDM microwave varactors are uncased, beam-lead components based on thin semiconductor and dielectric membranes, designed to operate at frequencies up to 50 GHz. They are intended for use as part of the receiving and transmitting paths of space systems, specifically within the modules of discrete phase shifters of Active Electronically Scanned Array (AESA) systems used in space-based location and communication systems. The devices offer a range of nominal capacitor values, high breakdown voltage, low dielectric loss tangent, and a very thin capacitor structure combined with extremely low weight, making them suitable for compact, high-frequency microelectronic assemblies. They were released in 2013 and are applicable across aviation, space, radio engineering/electronics/microelectronics, and civil industries.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.