United
States
Bush
Patent
(19)
11
Patent
45
Date
Number:
of
Patent:
4,511,898
Apr.
16,
1985
TERMINATED
(54)
WITH
(75)
Inventor:
Assignee:
(73)
Appl.
21)
Filed:
22)
Int.
51
52
(58)
Cl.
U.S.
C.
Field
of
MATCHING
No.:
.............................................
.....................................
Search
INVERTED V ANTENNA
TRANSFORMER
Elmer
R.
Bush,
Bethlehem,
Timetco
Corporation,
506,837
Jun.
22,
1983
...............
343/736;
343/733,
343/788,
Pa.
Bristol,
Pa.
H01O
11/06
34.3/860
736, 739,
787,
860,
861
(56)
U.S.
1,899,410
Primary
(57)
A
continuous
Examiner-E.
terminated,
coverage
range. A special
part
of
the
antenna
References
PATENT
2/1933
Bruce
Lieberman
ABSTRACT
end-fed
inverted V antenna
over
matching
system.
5
Claims, 2 Drawing
DOCUMENTS
the
Cited
..................................
343/736
provides
1.8
to
30
MHz
transformer
Figures
frequency
is
an
integral
U.S.
Patent
Apr.
16,
1985
4,511,898
TERMINATED
BACKGROUND
Wire
resonant,
half-wave
antennas
and
dipole
while a rhombic
nant
type.
forth,
antenna
in a load,
antenna
length
they
tion
very
tremely
lengths
This
In a resonant
reflecting
the
usually
viewed
of
wire,
suffer
patterns.
wide
range
directive
being
invention
exceptionally
axial
cable
2:1
and
trum,
transmission
from
1.8
receiver
even
wavelength
mounted
lengths.
included
the
provided
that
that
very
An
in
significant
by
One
object
will
function
radio
systems
over a large
recourse
vention
that
would
circuits
to
is
to
can
be
be
unable
or
choose
of a constant
ject
of
this
invention.
Another
antenna
lengths
erected
further
ings
large
that
ductivity
The
antennas
though
U.S.
fed
tion
tion.
broad
Goodbody,
techniques
object
that
being
without
object
is
the
provision
scale
grounding
is
tolerant
or
principles
have
not
as often
Pat.
No.
inverted
of
this
invention
No
special
frequency
in
for
INVERTED
MATCHING
OF
may
non-resonant
be
is
an
example
antenna
antenna
from
current
each
flows
a
resistor
as a transmission
resonant
from
Non-resonant
antennas
narrow.bandwidths
of
frequencies,
when
made
radiated.
SUMMARY
provides
wide
bandwidth,
MHz
of
radio
though
in
length
close
rf
matching
the
antenna
line
to
30
MHz.
waves
it
is
at
to
the
transformer
and
improvements
this
antenna.
OBJECTS
of
this
invention
over a wide
users
spectrum
many
provide
operated
that
will
antennas.
such a frequency-agile
by
unskilled
to
tune
and
appropriate
feed
point
impedance
of
the invention
is
relatively
transmitted
small
and
requiring
of
the
invention
of
an
or
of
differing
reflectivity.
PRIOR
underlying
been
well
known
used
as
2,207,504,
V
wire
(1940)
antenna
as
typical
matching
spectrum
U.S.
Pat.
resistive
No.
loading
1.
WANTENNA
TRANSFORMER
THE
INVENTION
grouped
is
end,
once
equal
into
or
terminated.
of
the
an
resonant
example
current
while
in a non-resonant
through
to
the
impedance
line.
are
more
and
antennas
long
a
non-resonant
function
and
can
in
terms
matching
with a VSWR
It
is
an
effective
over
this
only
approximately
the
ground
is
believed
in
is
range
must
be
able
Another
frequency
lower
frequencies
in
of
special
frequency
to
provide
of
change
to
function
object
WITH
two
categories:
The
common
antenna
of a non-reso
flows
back
and
is
absorbed
of
For a given
efficient,
broad
radia
over
be
made
of
the
wave
antenna
a
50
ohm
of
less
radiator
spec
0.2
terms
of
wave
design
to
account
coverage
-
an
antenna
frequencies,
frequencies
without
of
the
antenna
radio
adjust
antennas.
compared
received,
large
towers
related
antenna
courterpoise
ground
ART
non-resonant
resonant
shows a terminated
similar
art
devices
are
used
3,803,615
shipboard
operators
complex
is
is
the
that
matching
The
provision
thus
another
provision
to
and
and
to
its
does
of
the
wave
that
may
the
like.
surround
not
require
structures,
conditions
of
terminated
for
many
years,
antennas.
to
the
antenna
prior
to
to
operate
by
Bohm,
(1974)
wire
even
Bohm,
his
inven
over
however.
discloses
antennas
4,511,898
to
attain
broad
systems
The
and
Goodbody
may
antennas
spectrum.
and
sometimes
to
match
band.
spectrum
BRIEF
FIG. 1 is a schematic
DESCRIPTION
FIG. 2 is a perspective
the
radiofrequency
system
DETAILED
In
FIG. 1 an
legs 1 and 2
the
the
more
of
55
length
the
size.
With
approximately
be
skewed,
middle
antenna's
V
space
wire
is
limited,
The
Resistor
power
the
4
and
ground.
rating
transmitter
such
resistor
4
thereby
The
of a rod
technique
noted
that
good
conductivity
so
severe
or a
the
antenna
high
relative
and
much
are
possible
At
the
other
transformer
connected
ground
of
approximately
typically
transmitting
the
radio. In
are
possible,
ground
5
10
and
the
15
but
a
ex
20
with
co
25
than
of
a
and
30
is
for
35
so
40
in
who
45
ob
an
50
be
A
and
55
con
in
end
por
a
65
tions
antennas.
reflecting
and
resistors
the
frequency
cult,
work
quency
frequency
of
antenna
sloping
general,
V,
length
overall
between
able
be
may
the
the
inverted
if
efficiency.
wire
a
of
service
of
and
antenna.
means
standard
be
for
not
grounds. A quarter
ground
and
tively
dance
rents
tivity
quency
ing 7 is
other
dance
primary,
match
to a coaxial
from
tions
rounding
2
frequency
have
metal
parasitic
teaches
be
added
to
smooth
an
This
of
inverted V antenna
longer
efficient
feet
for
of
requirements
this
25
with
of
the
wire,
performance.
portion
coverage.
commonly
superstructure
elements
how
at
places
out
the
He
also
impossible,
antenna
is
covered
to a radio
much
less
OF
diagram
view
transformer
this
invention.
DESCRIPTION
INVENTION
and
a high
these
sloping
is
the
sloping
110
feet,
to
for
length,
the
to
35
feet
the
high
without
The
may
be
Naval
employed
of a ship
to
additional
other than
impedance
points
out
to
find a matching
than
the
by
this
invention.
THE
of
the
of
the
core
that
wire
middle
wires
antenna. I have
portions
be a good
efficiency
middle
high.
portion
3
substantially
length
reduced
with a corresponding
impedance
is
connected
It
of
approximately
feeding
as
SSB
is
to
absorb
prevent
ground
driven
the
requirements
as for
ground
and
current.
to
the
poorer
and
SWR
remain
between
has a value
or
CW
and
reflections
connection
into
well
known
one
of
600
half
the
the
system,
transmissions.
dissipate
from
5
is
the
earth
in
antenna
for a good
in
the
surrounding
other
types
of
wave
monopole
plane,
has a
ground
This
antenna
ground
ground
antennas
very
nearby
must
has a higher
so
that
much
connections
here.
end
of
the
6
between
terminal
having
types
connector
locations
such
has
inverted V wire,
is
connected.
10.
The
800
an
of
to
receive
as a
practically
Its
secondary
the
antenna
secondary
ohms.
The
impedance
coaxial
cable,
the
transmission
where
no
rooftop,
or
no
conductivity,
communica
non-resonant
has
disturb
many
antennas,
terminating
the
ends
of
over a wide
that
it
is
diffi
net
over a 3:1
almost
DRAWINGS
antenna.
and
is
part
OF
THE
is
shown
portion
of
the
1
and
fre
17
to
1
windings
of
the
with
3.
In
inverted
found
a
2,
or
an
compromise
and
for
reason
portion
3
The
not
should
inverted
precisely
V
in
affecting
and
height
of
the
proportionally
loss
in
radiation
the
same.
end of a sloping
to
800
ohms
output
for
intermittent
The
antenna
the
to
be
or
some
art.
ground,
ground
and
power
purpose
currents
end
of
the
made
by
other
It
should
and
are
requiring
mounted
low
above
impedance,
conduct
rela
impe
smaller
and
wire 1 and
has
low
of 50
is
ground
where
cur
conduc
radiofre
wind
an
an
impe
impedance
ohms
to
connected
line
connec
the
sur
such
as a desert,
late a ground.
In
transformer 6 are
a
laminated
glued
proof
strips
and
core.
first,
var
bent
The
the
mary
the
entire
of
No.
Note
in
the
The
routine,
material,
the
frequencies.
appears
nent,
believed
to
the
Another
feedpoint
sion
to
the
not
joined
outer
rf
potentials
antenna
antenna,
the
VSWR
ally.
VSWR
from
munications
change
ing
matching
matic
The
tant
has
more,
proportions
proving
Other
ter',
a
counterpoise
FIG. 2 the
together
seal.
five
one
eighth
The
made
insulated
to
emerge
secondary
primary
consists
length
14
AWG
that
the
same
details
but
core
success
resistive
and
to
feedline.
impedance
line
independently
outer
conductor
system.
the
With
remains
l.8
to
frequencies
details
shown.
ferrite
core
and
sealed
The
laminations
inches
long,
of an
secondary
up
wound
inch
winding 7 is
of
23
turns
copper
wire.
from
the
is
coverd
on
of
two
coils
of
the
secondary
heavy
two
coils
direction
of
it
is
fed
around
the
rif
believed
geometry,
of
the
antenna,
Below
approximately
with a capacitive
the
leakage
assist
significant
reactance
in
matching
factor
is
braid
of
the
to
the
secondary
of
the
at
different
cable
If
the
coaxial
impedance
as
seen
by
the
the
antenna
below
30
MHz.
It
systems
may
so
without
networks,
equipment
antenna
to
accomplish
system
of
parts: a terminated
been
well
known
and a particular
were
the
impedance
transformers
or
more
ideal
and
transformer
developed
have
transformer
3
4,511,898
wire
11
may
be
used
to
simu
of
the
construction
The
transformer
12
which
has
by
covering with a moisture
are
Q-1
three
thick.
ferrite
quarters
Six
strips
wound
of
No.
14
The
transformer
with
top
in
AWG
secondary
at
insulating
of
the
secondary.
parallel,
coil.
Formvar
transformer
insulated
from
wire
the
core.
that
this
and
configuration
windings
lead
may
particularly
4
MHz
reactance
of
the
and
balancing
in
the
of
coaxial
frequencies
of
system
2:1
that
or
non-resonant
characteristics
preserving
grounding
the
antenna.
cable
at
and
antenna
is
believed
of
cable
is
the
antenna
transmitter
over
be
unskilled
changing
without
this
invention
used
for
been
increases
as
disclosed
the
included
frequency
antennas
the
such
changes.
for a half
whose
but
one
tested,
characteristics,
of
the
is
wound
the
laminations
material,
of an
inch
wide,
comprise
on
the
core
heavy
Form
leads
13
the
same
material
end.
and
The
spaced
out
Each
copper
15
appear
over
has 7 turns
wire.
are
wound
to
of core
contributes
at
the
lower
the
antenna
compo
transformer
the
antenna
a
constant
of
the
transmis
The
connection
connector 9 is
ground
to
10.
be
at
varying
The
operation of
grounded
is
at
changed
and
materi
here,
range
in a radio
operators
expense
has
or
of
two
impor
com
may
tun
auto
inverted V that
century
structure
and
purpose,
of
that
some
antenna.
with
“bet
that
rif
on
in
one
10
are
15
pri
be
to
25
is
30
35
this
the
the
said
approximately
said
45
said
ing
or
impedance
50
im
turns
parallel
coil.
did
55
4.
not
approach
disclosed.
age
is
gral
part.
I
claim:
1. A wideband
continuous
quency
inverted
sloping
portion
between
electrical
transformer
bar
core of
impedance
a
coaxial
secondary
inverted V antenna
minated
2. A wideband
continuous
quency
inverted V configuration
sloping
portion
located
horizontally
tenna
wire, a terminating
one
end
terpoise
longitudinally
rectangular
winding
mission
connected
wire
remote
said
counterpoise
3.
An
inverted
long,
and
4.
An
terminating
800
ohms.
5.
An
radiofrequency
of 23
each
the
effectiveness
The
realized
antenna's
only with
coaxial
coverage
spectrum
V
configuration
generally
of
said
one
end
ground
of
comprising
downward
antenna,
a
of
said
inverted V antenna
connection,
of
the
remarkable
the
rf
transformer
cable
fed
the
having
antenna system
l.8
MHz
an
antenna
two
from an
terminating
and a radiofrequency
having a longitudinally
generally
primary
cable
winding
end
and
coverage of
spectrum
generally
of
said
beneath
between
of
said
wire, a radiofrequency
laminated
cross-section,
adapted
line,
and a high
between
from
rectangular
winding
transmission
connected
wire
remote
an
electrical
coaxial
cable
the
comprising
having
downward
antenna,
said
inverted V antenna
at
antenna
the
ends
cross-section,
adapted
line,
and a high
between
from
ground
fed
antenna
l.8
MHz
an
antenna
two
from
least
resistor
an
one
counterpoise
wire
extending
of
said
connected
wire
transformer
ferrite
bar
a
low
impedance
for
connection
the
end
said
to a coaxial
impedance
resistance
secondary
of
said
inverted V antenna
terminated
wire.
antenna
antenna
antenna
with
system
V
antenna
the
height
30
according
wire
of
said
feet.
system
according
resistor
system
has a value
according
transformer
turns
wound
primary
connected
each
about
winding
electrically
other
and
e
s k ck
to
is
approximately
elevated
to
to
has a secondary
said
core,
comprises
and
wound
over
transformer
frequency
cover
as
an
here
inte
for
to
30
MHz
wire
wire
elevated
resistor
wire
laminated
for
connection
fre
in
an
segments
middle
connected
and
an
ferrite
a
low
to
impedance
the
end
of
said
said
resistor
ter
connection.
system
to
30
wire
wire
elevated
for
MHz
fre
in
an
segments
middle
wire
generally
inverted V an
between
and
said
coun
core
of
cable
having
generally
a
primary
trans
winding
end
and
claim 1 in
middle
claim
of
approximately
claim 1 in
which
110
feet
portion
1 in
is
which
which
wind
and
said
two
magnetically
said
low
coils
of
7
in
secondary
60
65
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