Patents involving antenna and aerials, mainly for transmitting...

[the_big_m_in_ok]

#5,574,411
Fig. 6 is the most pertinent.  A balun circuit that essentially tunes a antenna input:

http://www.google.com/patents?id=qLkbAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#3,440,542
Four RF receiving coils that appear to be on ferite cores, two of which appear to be counter-wound:

http://www.google.com/patents?id=vjxWAAAAEBAJ&pg=PA1&dq=loop+array&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#3,357,023
Fig. 4 shows how one type of RF balun works.  A counterwound bifilar with one crossover coil at the input:

http://www.google.com/patents?id=FqxhAAAAEBAJ&pg=PA3&dq=antenna+loop&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#2,636,122
Antenna system that's also a transformer---which can be modified to include a long monopole antenna.
Figs. 2 & 4 are most pertinent:

http://www.google.com/patents?id=5otbAAAAEBAJ&pg=PA1&dq=antenna+loop&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=antenna%20loop&f=false

--Lee

[the_big_m_in_ok]

#4,999,642
Wow.  Figs. 2 & 8 are like Tesla flat pancake coils combined with counterwound bifilar coils:

http://www.google.com/patents?id=XCgfAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,816,766
This one may have application for 3-dimensional plasma confinement or possibly new spacecraft propulsion concepts.  Fig. 5 is the one:

http://www.google.com/patents?id=4GstAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,095,168
A system for nuclear Magnetic Resonant Imaging.  These are generally the pickup coils with associated electronics:

http://www.google.com/patents?id=E_Q0AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,088,998
This one detects EMP radiation from nuclear blasts.  Cables are suspended 2-4 km. down an oil well borehole.  Obviously a large system:

http://www.google.com/patents?id=Yr44AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#3,946,397
Inductor with "resonating" capacitors(Fig. 3):

http://www.google.com/patents?id=XrwsAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#3,795,855
A similar system to #4,095,168.  Two sets of coils, mounted 90 degs. in axis, but all the coil's turns are running in the same direction with respect to the two sets.  Both sets are electrically disconnected:

http://www.google.com/patents?id=2cwwAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#3,783,448
Here's one that can be used with a wire(Fig. 7A), or a spiral coil of foil(Fig. 5):

http://www.google.com/patents?id=KFkyAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#2,910,695
Figs. 2 & 2A use a crossover square arrangement to find a direction of transmission:

http://www.google.com/patents?id=A_RoAAAAEBAJ&pg=PA1&dq=loop+antenna&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=loop%20antenna&f=false





#2,292,325
This is really an underground HAARP-style radio transmission system that has applications on a very large scale:

http://www.google.com/patents?id=uohcAAAAEBAJ&pg=PA1&dq=antenna+loop&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=antenna%20loop&f=false





#2,291,450
Unusual toroids opposite in orientation.  A broad spectrum receiving antenna:

http://www.google.com/patents?id=z21VAAAAEBAJ&pg=PA1&dq=antenna+loop&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=antenna%20loop&f=false





#2,109,219
Coupling arrangement for 5-meter receivers.  Unusual:

http://www.google.com/patents?id=HiJWAAAAEBAJ&pg=PA1&dq=loop+antenna&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=loop%20antenna&f=false

--Lee

[the_big_m_in_ok]

#6,317,099
Similar to #2,750,589 but uses metallic tape material like a Lakhovsky radiator coil:

http://www.google.com/patents?id=_XcIAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,649,348
A 3-dimensional system, generally for a pole mounted application(Fig. 3).  Originall designed for Nuclear Magnetic Resonance:

http://www.google.com/patents?id=ymQ5AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,638,253
Similar to #2,567,235(Fig.3):

http://www.google.com/patents?id=VmI5AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,442,590
One-pole network involving a receiving array that's ideal for the purpose of this forum:

http://www.google.com/patents?id=h5Q-AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,439,733
Rather like a 3-dimensional Caduceus coil:

http://www.google.com/patents?id=Rcc6AAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#3,287,630
Good for plasma confinement or possibly nuclear fusion(Fig. 4):

http://www.google.com/patents?id=37JnAAAAEBAJ&pg=PA1&dq=patent:3287630&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#2,293,136
High frequency broadcast antenna.  Planar loops with capacitors at the corners:

I could only retrieve the patent on www.pat2pdf.org (413 KB, 5pp)




#2,750,589
Folded pole mounted antenna that can be mounted horizontally:

http://www.google.com/patents?id=WUhSAAAAEBAJ&pg=PA1&dq=patent:2750589&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#2,567,235
Uses various lengths of wire & angles to account for impedence matching:

I could only retrieve the patent on www.pat2pdf.org (about 835 KB, 13pp)



#2,311,872
Three sections in a 1/3 pie-shaped antenna, with crossover:

http://www.google.com/patents?id=2shlAAAAEBAJ&pg=PA21&dq=patent:2311872&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false





#2,124,424
Simple vertical system.  One wire like a car ignition coil with 2 lengths connected at bottom in a 'C' shape:

http://www.google.com/patents/about?id=pxFNAAAAEBAJ&dq=patent:2124424&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=

--Lee

[the_big_m_in_ok]

#6,452,568
This is way different.  Think of a spiral snowflake in series with coil turns opposite and then alternating:

http://www.google.com/patents?id=fGALAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#6,011,524
Cone shaped Caduceus coil(Fig. 1):

http://www.google.com/patents?id=ifUAAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#5,053,719
This was designed as an RF amplifier, but can be experimented with by replacing the RF imput with a very long wire, and the coax cables be lengthened to half a mile or more.

http://www.google.com/patents?id=yQUiAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#1,812,695
Fig. 6 is most relevant, and should have the coil turns wired in series and enlarged in size:

http://www.google.com/patents?id=7B9JAAAAEBAJ&pg=PA1&dq=loop+aerial&as_drrb_ap=q&as_minm_ap=0&as_miny_ap=&as_maxm_ap=0&as_maxy_ap=&as_drrb_is=q&as_minm_is=0&as_miny_is=&as_maxm_is=0&as_maxy_is=&num=100&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false

--Lee

[the_big_m_in_ok]

#5,559,524
A complicated system that uses different configurations of wires to bring in radio signals:

http://www.google.com/patents?id=w-QiAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false





#4,994,755
This one has many co-ax cables going in several directions so a to be functional:

http://www.google.com/patents?id=BxIpAAAAEBAJ&printsec=abstract&zoom=4#v=onepage&q=&f=false

--Lee