JED - March 2018 - 28

mensional, multi-physics, numerically
efficient modeling and simulation
techniques on structures representative of advanced vacuum electronic
amplifiers; and the fabrication and
test of wideband and high-power
beam-wave interaction structures, and
high current-density cathodes.
Applied research work is aimed at
the creation of a new class of wideband, millimeter-wave, high-power
vacuum electronic amplifiers, with
size, weight, and power (SWaP) features consistent with reusable airborne and mobile platforms. As stated
in the FY2018 budget document, "the
HAVOC amplifier will provide leapahead capabilities to air, ground, and
ship-based communications, sensing,
and EW systems, but will require significant advancements in cathodes
with high current-density and long
lifetime, beam-wave interaction circuits with wide bandwidth and high
power handling capability, wideband
and low-loss vacuum windows, and
compact magnetic structures for electron beam transport."

The INVEST program is
looking at ways to use
new, more-advanced
manufacturing
approaches,
such as "additive
manufacturing."
Goals for FY2018 include the design,
fabrication, and test of wide bandwidth
vacuum windows with high power handling capability, the investigation of
new magnetic materials and magnet
configurations that enable compact, integrated beam focusing and transport
architectures; and the integration of
components into prototype amplifiers
for initial testing.

INNOVATIVE VACUUM ELECTRONICS
The second major DARPA initiative
in advanced vacuum electronics technology is the Innovative Vacuum Electronic Science and Technology (INVEST)

Program. The purpose of INVEST is to
strengthen the science and technology
base for an entire new generations of
vacuum tubes. This includes fundamental research in physics-based modeling
and simulation of VEDs, innovative component design, electron emission processes, and advanced manufacturing.
As described by Palmer, "The INVEST
program is based on the observation
that applications have been moving to
higher frequencies all along, and there's
no reason to expect that to stop. The
next window that people are looking at
is W-band - 94 GHz or so (W-band is 75110 GHz), and when you get up to those
frequencies, the dimensions of the
vacuum tools and all of the components
(such as high-current-density cathodes,
tiny vacuum envelopes, and microparts
that extract the RF signals amplified
inside the component), get really small,
and ultraprecise alignment is even more
difficult and critical. As you push frequencies up, you can't use conventional
manufacturing techniques anymore."
To address this challenge, the INVEST program is looking at ways to use

The Journal of Electronic Defense | March 2018

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JED - March 2018

Table of Contents for the Digital Edition of JED - March 2018

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor - DOD Rolls Out $686 Billion FY2019 Budget
World Report - Russia Developing More Sophisticated Approach to EW
The Domain of the Tube – Millimeter Wave and Beyond
A Wild Weasel EWO Kills a SAM – from an AC-130E Gunship
Resilient and Ready: NATO JEWCS in Transition
EW 101
2018 AOC Industry & Institute/ University Member Guide
AOC News
Index of Advertisers
JED Quick Look
JED - March 2018 - intro
JED - March 2018 - cover1
JED - March 2018 - cover2
JED - March 2018 - 3
JED - March 2018 - 4
JED - March 2018 - 5
JED - March 2018 - The View From Here
JED - March 2018 - 7
JED - March 2018 - Conferences Calendar
JED - March 2018 - 9
JED - March 2018 - Courses Calendar
JED - March 2018 - 11
JED - March 2018 - From the President
JED - March 2018 - 13
JED - March 2018 - 14
JED - March 2018 - The Monitor - DOD Rolls Out $686 Billion FY2019 Budget
JED - March 2018 - 16
JED - March 2018 - 17
JED - March 2018 - 18
JED - March 2018 - 19
JED - March 2018 - 20
JED - March 2018 - 21
JED - March 2018 - World Report - Russia Developing More Sophisticated Approach to EW
JED - March 2018 - insert1
JED - March 2018 - insert2
JED - March 2018 - 23
JED - March 2018 - The Domain of the Tube – Millimeter Wave and Beyond
JED - March 2018 - 25
JED - March 2018 - 26
JED - March 2018 - A Wild Weasel EWO Kills a SAM – from an AC-130E Gunship
JED - March 2018 - 28
JED - March 2018 - 29
JED - March 2018 - 30
JED - March 2018 - 31
JED - March 2018 - Resilient and Ready: NATO JEWCS in Transition
JED - March 2018 - 33
JED - March 2018 - 34
JED - March 2018 - 35
JED - March 2018 - 36
JED - March 2018 - 37
JED - March 2018 - 38
JED - March 2018 - 39
JED - March 2018 - 40
JED - March 2018 - 41
JED - March 2018 - EW 101
JED - March 2018 - 43
JED - March 2018 - 44
JED - March 2018 - 45
JED - March 2018 - 2018 AOC Industry & Institute/ University Member Guide
JED - March 2018 - 47
JED - March 2018 - 48
JED - March 2018 - 49
JED - March 2018 - 50
JED - March 2018 - 51
JED - March 2018 - 52
JED - March 2018 - 53
JED - March 2018 - 54
JED - March 2018 - 55
JED - March 2018 - 56
JED - March 2018 - 57
JED - March 2018 - 58
JED - March 2018 - 59
JED - March 2018 - 60
JED - March 2018 - 61
JED - March 2018 - 62
JED - March 2018 - 63
JED - March 2018 - 64
JED - March 2018 - 65
JED - March 2018 - 66
JED - March 2018 - 67
JED - March 2018 - 68
JED - March 2018 - 69
JED - March 2018 - 70
JED - March 2018 - AOC News
JED - March 2018 - 72
JED - March 2018 - Index of Advertisers
JED - March 2018 - JED Quick Look
JED - March 2018 - cover3
JED - March 2018 - cover4
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