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4155091 |
Compact omnidirectional antenna array
An omnidirectional antenna array comprising a ferrite antenna inductively coupled to one leg of a loop antenna that lies in a plane parallel to the long axis of the ferrite antenna. The output...
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4080603 |
Transmitting and receiving loop antenna with reactive loading
The disclosure relates to an antenna system for C.B. radio use which is mounted upon a metallic base, such as the roof of an automobile, the antenna having the S-shape or Greek-key design...
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3993998 |
Directional loop antenna with plural dielectric coverings
A directional loop antenna, particularly for television signals, comprising a conductive member shaped into a folded dipole configuration is disclosed. Covering the conductive member is a plastic...
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3973263 |
Sensitivity improvement of spaced-loop antenna by capacitive gap loading
An improved antenna system having a plurality of loop antennas surrounded coaxial shields which have dual electrostatic shield gaps therein. A shunt capacitance is placed across each of the shield...
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3971030 |
Antenna window
A combined window or windshield and antenna for an automotive vehicle includes an antenna comprising a generally T-shaped conductor and a generally U-shaped conductor, the two conductors being...
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3971031 |
Loaded quad antenna
A driven quad antenna unit includes four perpendicularly arranged antenna elements, each element containing therein a high Q load coil in order to reduce the overall size of the antenna structure....
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3956751 |
Miniaturized tunable antenna for general electromagnetic radiation and sensing with particular application to TV and FM
A miniaturized thin-wire multi-turn series-connected helical loop antenna, the volutes of which are concentric turns, closely spaced so as to exhibit strong mutual coupling effects. A lumped...
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3918063 |
Antenna having combined elements for VHF and UHF signals
A composite antenna apparatus having a combination of a first element for a VHF signal formed in a modified loaded loop antenna and a second element for a UHF signal formed in a modified arraying...
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3906507 |
Combination glideslope/localizer antenna for aircraft
A combination glideslope/localizer antenna suitable for mounting on the forward bulkhead in the radome area of an aircraft provides two suitably isolated connectors for receiving glideslope and...
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3823403 |
MULTITURN LOOP ANTENNA
The invention is a multiturn loop antenna of an efficient design suitable for use singly, in arrays, or for inductively exciting radiating currents on a structure -- the surface and the elements...
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3761933 |
LOOP ANTENNA WITH DISTRIBUTED IMPEDANCE NEAR THE TERMINATING GAP
A low cost, physically small loop antenna is provided. The loop antenna is characterized by a metal band arranged in a loop having a pair of separated gaps, one of which is a feed gap and the other...
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3737907 |
MULTIBAND QUAD AND LOOP ANTENNA
An antenna which incorporates a single four-sided radiating element or loop in conjunction with series or parallel connected loading units to cover a multiple of operating frequencies.
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3721990 |
PHYSICALLY SMALL COMBINED LOOP AND DIPOLE ALL CHANNEL TELEVISION ANTENNA SYSTEM
A low cost, physically small, all channel television antenna system is provided for reception in high signal strength areas. The antenna is characterized by a loop having a pair of separated gaps,...
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3683389 |
OMNIDIRECTIONAL LOOP ANTENNA ARRAY
An antenna array for use with a system for receiving signals from a radio capsule disposed within a patient's gastrointestinal tract. The array of antennas comprises three mutually perpendicular...
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3680134 |
LOOP ANTENNA WITH SPACED IMPEDANCE ELEMENTS
A directional antenna comprises a pair of semi-circular antenna members arranged to form a loop, each of the antenna members includes arcuate upper and lower wire-like conductive elements which are...
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3671970 |
SWITCHED RHOMBIC AUTOMATIC DIRECTION FINDING ANTENNA SYSTEM AND APPARATUS
An antenna system which includes a four-element structure composed of inductances wound on high Q ferrite material and arranged in the form of a rhombus in combination with switching and tuning...
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3665479 |
OMNIDIRECTIONAL TOWER SUPPORTED ANTENNA
A combined dipole-loop antenna for bipolarized radio frequency signals. A dipole-loop is mounted on each face of an electrically large multi-faceted tower such as a triangular tower with the plane...
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3641576 |
PRINTED CIRCUIT INDUCTIVE LOOP ANTENNA
A relatively high-impedance FM radio antenna is provided consisting essentially of a circular loop of conductive foil having a discontinuity therein and deposited on one side of a substantially...
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3631499 |
ELECTRICALLY SMALL DOUBLE-LOOP ANTENNA WITH DISTRIBUTED LOADING AND IMPEDANCE MATCHING
Relatively uniform impedance and broad bandwidth is obtained in a double-loop electrically small antenna by transformer coupling in phase opposition the ends of the loops. For receiving,...
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3626420 |
MAST-MOUNTED LOOP ANTENNA
An antenna assembly including separate antennas for receiving UHF and VHF signals disposed along spaced points on an antenna mast. The UHF antenna forms a closed configuration aligned in a plane at...
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3587102 |
HELICOPTER SKID ANTENNA
The struts which are disposed perpendicular to the roll axis of a helicop for supporting the landing skids thereof are insulated from the helicopter fuselage. One of the struts has an antenna feed...
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3582951 |
HELMET ANTENNA
An antenna having a configuration which may be positioned entirely within a conventional helmet formed of a dielectric material. The antenna is comprised of a loop-type, conductive member having a...
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3576567 |
CIRCULARLY POLARIZED BROADCAST ANTENNA
A circularly polarized broadcast antenna comprising a pair of conducting arms having portions forming an interrupted loop polarized in a first plane and terminating in ends diverging in different...
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3550137 |
CONSTANT IMPEDANCE LOOP ANTENNA
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3487463 |
MARKER BEACON ANTENNA
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3474452 |
OMNIDIRECTIONAL CIRCULARLY POLARIZED ANTENNA
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3441935 |
LOOP ANTENNA WITH NEGATIVE RESISTANCE ELEMENT AT TERMINATING GAP
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3299428 |
Horizontal semienclosed loop with conductive ground plane, having vertical whip extening from within loop enclosure
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3284801 |
Large loop antenna
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3281847 |
Antenna systems
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3247515 |
Low profile antenna
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3176299 |
Circular-type antenna with symmet-rically movable arms providing capacitive and inductive variation for tuning
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3151328 |
Open ring antenna
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3139619 |
Missile mounted loop antenna with vibration resistant series capacitors
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3103011 |
Inductively loaded folded antenna
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3078462 |
One-turn loop antenna
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2950479 |
Loop antenna utilizing conductive cabinet
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2888676 |
Folded television antenna
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2881429 |
Indoor television antenna
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2798217 |
Slotted ring antenna
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3560983 |
Title is not available
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