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8081130 |
Broadband whip antenna
A shortened multi-band antenna includes in-line dipoles, selected elements of which having shielded meanderline chokes to be able to switch from an extended dipole at the lower VHF frequencies to a...
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8023890 |
Communication system, communication apparatus, and electric-field-coupling antenna
A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an EFC antenna configured...
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8013799 |
Dual-band monopole antenna with antenna signal fed through short-circuit terminal of transmission line
Disclosed is a dual-band monopole antenna with antenna signal fed through a short-circuit terminal of a transmission line load. The dual-band monopole antenna includes an antenna extension section...
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7894770 |
Communication system and communication apparatus
A communication system includes the following elements: a transmitter including a transmission circuit unit configured to generate an RF signal for transmitting data and an electric-field-coupling...
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7890053 |
Communication system
A communication system includes a transmitter including a transmission circuit unit that generates an RF signal for transmitting data and an electric-field-coupling antenna that transmits the RF...
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7872611 |
Leaky coaxial antenna
The invention relates to a leaky coaxial antenna (10) comprising an inner conductor (1), a dielectric (2) around the inner conductor (1), and a first shield conductor (4) disposed around the...
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7855693 |
Wide band biconical antenna with a helical feed system
A wide band biconical antenna with a helical feed system comprises a printed circuit board (PCB) that maintains a plurality of antenna elements having an entry conic and a termination conic...
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7804459 |
Transmission line loaded dual-band monopole antenna
Disclosed is a transmission line loaded dual-band monopole antenna, which realizes operation in dual bands with a single antenna. The dual-band monopole antenna includes a monopole antenna and a...
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7733284 |
Broadband land mobile antenna
There is provided a monopole antenna including a helical radiating element including a first longitudinal portion having a first winding pitch and a second longitudinal portion having a second...
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7348933 |
Compact multi-polarized antenna for portable devices
A compact multi-polarized antenna for transmitting and/or receiving radio frequency (RF) signals, and a method for constructing same, is disclosed. The antenna comprises at least two radiative...
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7289080 |
Ultra broadband linear antenna
An antenna of dipole and monopole antenna elements with filtering to achieve a greater bandwidth. The multiple antenna elements are isolated or combined in order to provide a self adjusting...
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7256750 |
E-plane omni-directional antenna
E-plane omni-directional antenna is described. In an embodiment, a transmission signal connection system includes a center conductive rod to communicate a radio frequency transmission signal, and...
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7239286 |
Antenna with dipole connector
An antenna assembly has a lower break assembly and an upper break assembly. Both have a center fed transmission line within a conductive tube, and both are mutually connectable for connecting the...
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7236139 |
Low backscatter polymer antenna with graded conductivity
Polymer antenna structures having low reflectivity and high efficiency are disclosed. Wire antennas can be configured from coaxial cable having center conductors and outer conductors made from...
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7205952 |
Broad band slot style television broadcast antenna
A broad band slot style broadcast antenna utilizing coaxial hollow tubes, the inner tube discontinuous at its longitudinal center in order to provide two high power antennas at a single location....
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7193582 |
Digital receiving antenna device for a digital television
A digital receiving antenna device is connected to a digital television through a coaxial cable and has a casing, a flat antenna, a coaxial cable connector and a coaxial transmission line. The flat...
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7158087 |
Dual-band dipole antenna
A dual-band antenna (1) includes a first antenna (2) and a second antenna (3). The first antenna includes a first dipole half (11) and a second dipole half (12). The first dipole half is disposed...
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7154445 |
Omni-directional collinear antenna
An antenna includes a differential transmission line and a center conductor, where the center conductor is at least partially contained within the differential transmission line and at least...
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7136026 |
Cable antenna structure
The antenna apparatus, comprises a coaxial cable having a core conductive wire for feeding signal, a radiation unit coupled to the coaxial cable, wherein the material and character of the radiation...
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7064728 |
Ultra-wideband dipole antenna
Provided is an ultra-wideband dipole antenna. In one embodiment, the antenna comprises a first outer sleeve, an intermediate sleeve surrounded by the first outer sleeve, a second outer sleeve above...
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7027004 |
Omnidirectional broadband antenna
A broadband omnidirectional antenna includes an antenna element projecting from a base plate or counterweight surface. The antenna element has an outer surface which extends away from the base...
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7006050 |
Low cost antennas manufactured from conductive loaded resin-based materials having a conducting wire center core
Low cost moldable antennas and methods of forming the antennas are described. Elements of the antennas are conductive loaded resin-based material having a conducting wire center. The conducting...
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6985121 |
High powered multiband antenna
A multiband antenna has a lower conductive tube and three or more upper conductive tubes, all spaced from each other and disposed on the same longitudinal axis. A transmission line extends within...
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6980172 |
Multi-band cable antenna
The present invention is directed to a multi-band cable antenna. A multi-band cable antenna according to the present invention comprises: a dielectric substrate, as a nonconductive dielectric...
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6963313 |
Dual band sleeve antenna
A cost efficient multi-band antenna, for use with non-harmonically related frequency bands, for example dual Wi-Fi frequency bands. An antenna element extends away from a ground plane. A sleeve...
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6961027 |
Feed system and method for interleaving a branch feed antenna with an existing series feed antenna within the same aperture centerline
An antenna system for an interleaved branch fed antenna is provided, wherein the interleaved branch fed antenna shares the same centerline as a series fed antenna. The antenna systems are easily...
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6947006 |
Colinear antenna of the alternating coaxial type
The invention relates to an antenna of colinear type. It comprises a radiating portion comprising: three substantially rectilinear conductive wire elements that are mutually parallel, comprising a...
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6842155 |
Low-cost coaxial cable fed inverted-L antenna
The present invention discloses a low-cost coaxial cable fed inverted-L antenna with a structure using only one coaxial cable and extending an internal conductor outside one end of the coaxial...
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6828943 |
Radiating method and radiating apparatus of wave motion for giving reducing properties
A conventional method for giving reducing properties uses medication or medium and thus, a range in which the method can be utilized is limited, and there is apprehension that the method adversely...
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6806841 |
Tri-element antenna with dish
A three element antenna utilizes a truncated parabolic reflector dish of diameter “d” and focal point “f” and a director plate for receiving and transmitting high frequency signals in conjunc...
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6717554 |
Dual-band dual-polarization antenna
A substance structure of a dual-band dipole antenna, it consists of: an internal conductor, which is formed by a lead coated with an internal insulation layer; an external conductor, which is...
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6686892 |
Switchable length whip antenna
A whip antenna with switchable operative length provides seven band coverage from 30 to 90 MHZ. A coaxial choke section below a fixed upper antenna element is used for the highest frequency band. A...
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6657601 |
Metrology antenna system utilizing two-port, sleeve dipole and non-radiating balancing network
The present invention provides a metrology antenna system that combines a sleeve dipole antenna having two coaxial input ports with a balancing network. This combination (1) minimizes or eliminates...
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6650300 |
Common aperture UHF/horizontally polarized low-and mid-band VHF antenna
A common aperture UHF/horizontally polarized low- and mid-band VHF antenna is disclosed that includes a coaxial antenna that has an inner conductor, an outer conductor, a batwing assembly mounted...
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6646612 |
Non-directivity antenna for wireless LAN
An antenna device for wireless LAN of the present invention includes a base module and an antenna case that receives a built-in antenna therein. A metal reflector plate is held in a base element of...
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6642902 |
Low loss loading, compact antenna and antenna loading method
A low loss, compact radio antenna and antenna loading method. For a monople antenna a tubular, conductive radiating element provided whose length is less than one-quarter the wavelength of the...
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6606064 |
Systems and methods for using a closed field antenna for air interface testing
A tester comprises a first antenna that includes a cylinder formed from a dielectric material, a ground plane covering at least a portion of the outer surface of the cylinder, and a conductor...
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6577283 |
Dual frequency coaxial feed with suppressed sidelobes and equal beamwidths
An antenna feed in a satellite system that provides substantially equal E-plane and H-plane patterns. The feed includes outer and inner conductive walls that are coaxial, and define an outer...
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6552692 |
Dual band sleeve dipole antenna
An antenna comprising a center-fed coaxial dipole having a first element, configured as a whip and a second element having a first and second portion for transmitting/receiving in dual frequency...
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6509815 |
Feeding or decoupling device for a coaxial line, especially for a multiple coaxial line
A feed or output-coupling apparatus for coaxial lines has a spur line which is short-circuited at the end. In order, at least in the case of a single coaxial line, to allow a broadband connection...
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6377226 |
Dual band antenna
A dual band antenna for a mobile communication system which includes: a metal tube having an open end; a coaxial feed line having inner and outer conductors, with one portion of the coaxial line...
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6377225 |
Antenna for portable wireless devices
An enhanced antenna apparatus suitable for use with portable wireless devices. The antenna of the present invention comprises a conductive sleeve having an inner core that can accommodate one or...
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6320555 |
Internally branch fed slotted coaxial antenna
A slotted coaxial antenna design that accomplishes four-way branch feeding without the use of feedlines, is disclosed. In a preferred embodiment, the antenna design is based on a number of layered...
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6281856 |
Method for making antenna of coaxial cable and the antenna so made
A cable antenna includes a circuit board to which first ends of two antenna cables and a coupling cable are soldered. A second end of the coupling cable forms a connector for connection with a...
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6266026 |
Multiple band antenna
An antenna system characterized by decoupling the antenna mast for multiple bands by use of a quarter wave decoupling stub or by the use of a frequency relative trap. As a result the antenna has...
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6229495 |
Dual-point-feed broadband whip antenna
A dual-radiator whip antenna to operate over a 30 to 450 MHz frequency band includes a high frequency dipole above a low frequency monopole. The outer conductor (30) of a coaxial line is configured...
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6201509 |
Coaxial continuous transverse stub element device antenna array and filter
A continuous transverse stub element array structure which forms a coaxial geometry formed from a plurality of cylindrical segments, wherein each of the cylindrical segments has a rim at a top end...
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6177911 |
Mobile radio antenna
A narrow and light mobile radio antenna that requires convenient supporting metal fittings provided in a base station is provided. An inner conductor of a coaxial feed line extends upward by a...
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6078295 |
Tri-band antenna
An antenna for use with low-band, mid-band and high-band signals, including a coaxial member, a low-band and mid-band signal input connected between one end of the coaxial member outside conductor...
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6034648 |
Broad band antenna
An antenna (1) comprises a first elongate antenna element (3) for connection, in use, to a signal carrying element of an apparatus with which the antenna is used, and a shorter second antenna...
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