Cross loop antenna

Claim 2

A cross loop antenna comprising: a. a first array having a plurality of winding cores spaced apart in parallel relation; b. a second similar array mounted in a closely adjacent plane parallel to that of said first array but the winding cores of said second array being perpendicular to the first cores, the cores of said second array being spaced from the cores of said first array; c. an antenna winding on each of said cores, the windings of each array being connected in series, alternate windings connected in mutual inductance-cancelling fashion; d. a pair of amplifiers, the input of each said amplifier connected directly to the two ends of one of the respective series combinations of windings of said arrays; e. a first electrostatic shield around said antenna and a second electrostatic shield separatiNg said amplifiers from said windings; and f. said antenna being contained in a single package.

Claim 3

A cross loop antenna comprising: a. a first array having two winding cores spaced apart in parallel relation; b. a second array of two winding cores mounted in a closely adjacent plane parallel to that of said first array but the winding cores of said second array being perpendicular to the first cores, the cores of said second array being spaced from the cores of said first array; c. an antenna winding on each of said cores, the windings of each array being connected in series, alternate windings connected in mutual inductance-cancelling fashion, each said winding being concentrated at a small central portion of its respective core; d. a pair of amplifiers located inside the square formed by said four cores, the input of each said amplifier connected directly to the two ends of one of the respective series combinations of windings of said arrays; and e. said antenna being contained in a single package.

Claim 4

A cross loop antenna comprising: a. a first array having two winding cores spaced apart in parallel relation; b. a second array of two winding cores mounted in a closely adjacent plane parallel to that of said first array but the winding cores of said second array being perpendicular to the first cores, the cores of said second array being spaced from the cores of said first array; c. an antenna winding on each of said cores, the windings of each array being connected in series, alternate windings connected in mutual inductance-cancelling fashion, each said winding being concentrated at a small central portion of its respective core; d. a pair of amplifiers located inside the square formed by said four cores, the input of each said amplifier connected directly to the two ends of one of the respective series combinations of windings of said arrays; and e. said antenna being contained in a single package.

Claim 5

An antenna assembly comprising: a. a substantially square box having a height substantially less than the length of each of its four sides; b. a first array of two parallel cores mounted between two opposite sides at substantially opposite ends thereof, and a second array of two parallel cores similarly mounted between the other two opposite sides; c. an antenna coil winding on each said core concentrated at substantially the central portion of its core; d. a lower base of said box having a pair of amplifiers mounted thereon in the central portion thereof and extending upward within the space formed in the center of the four said cores; e. the windings of each said array being connected in series and in mutual inductance-cancelling fashion, the ends of each series - connected array being connected to the input of a respective one of said amplifiers by substantially as short a length of leads as necessary; f. a cover over the top of said box; and g. an electrical connector in an opening of said base for carrying amplifier output and operating leads through said base.

Claim 6

An antenna assembly comprising: a. a substantially square box having a height substantially less than the length of each of its four sides; b. a first array of two parallel cores mounted between two opposite sides at substantially opposite ends thereof, and a second array of two parallel cores similarly mounted between the other two opposite sides; c. an antenna coil winding on each said core concentrated at substantially the central portion of its core; d. a lower base of said box having a pair of amplifiers mounted thereon in the central portion thereof and extending upward within the space formed in the center of the four said cores; e. the windings of each said array being connected in series and in mutual inductance-cancelling fashion, the ends of each series - connected array being connected to the input of a respective one of said amplifiers by substantially as short a length of leads as necessary; f. a cover over the top of said box; and g. an electrical connector in an opening of said base for carrying amplifier output and operating leads through said base.

Claim 7

Apparatus in accordance with claim 3 including a circuit board having printed circuit conductors thereon mounted over the top of said amplifiers, said conductors forming the electrical connections of paragraph (e) between said windings and said amplifier inputs.

Claim 8

Apparatus in accordance with claim 3 including shielding means between said amplifiers and said windings.

Claim 9

Apparatus in accordance with claim 3 wherein said box forms an electrostatic shield.

Claim 10

Apparatus in accordance with claim 3 including shielding means around the sides and top of said amplifiers, means defining small openings in the top of said shielding means, amplifier input leads passing through said openings, a circuit board having printed circuit conductors thereon mounted over the top of said shielding means, said conductors forming the electrical connections as recited in paragraph (e) between said windings and said amplifier input leads.