|
Match
|
Document |
Document Title |
|
|
7599714 |
Increasing the range of access point cells for a given throughput in a downlink of a wireless local area network
The present invention provides a method and an apparatus may increase or extend the range of wireless communication cells for a given throughput in a downlink of a wireless communication system....
|
|
|
7580000 |
Folding dipole antenna and tag using the same
In a folded dipole antenna, both ends of a first dipole portion with a feeding portion are connected to both ends of a second dipole portion so that a slot portion may be formed, and the first and...
|
|
|
7561112 |
Composite antenna device
A composite antenna device includes a ground board, an unbalanced antenna, a balanced antenna. The unbalanced antenna includes a first feeding point coupled with the ground board, a first radiator...
|
|
|
7339542 |
Ultra-broadband antenna system combining an asymmetrical dipole and a biconical dipole to form a monopole
An ultra-broadband antenna system is disclosed. The antenna system is a single tubular antenna structure comprising an asymmetrical dipole fed with a biconical dipole. The biconical dipole covers...
|
|
|
7170449 |
Antenna system for georadar
An antenna system for ground penetrating radar, comprising at least two orthogonally mounted transmitter antenna elements ( 1, 2 ) and at least two orthogonally mounted receiver antenna elements (...
|
|
|
6859176 |
Dual-band omnidirectional antenna for wireless local area network
The present invention relates to a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar...
|
|
|
6515628 |
Dual polarization patch antenna
A dual polarization patch antenna comprising a patch, first and second pairs of orthogonally disposed probes feeding said patch, and a first feed network for feeding said first pair of probes from...
|
|
|
6154184 |
Antenna apparatus for portable phones
An antenna apparatus for a portable telephone which is capable of having a better gain characteristic and also capable of achieving a better circularly polarized characteristic over a wide range is...
|
|
|
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...
|
|
|
5793336 |
Conformal antenna assemblies
A conformal antenna assembly disclosed has a first antenna portion sensitive to a UHF band of frequencies. A thin, flat, low-profile, weather-resistant housing encloses the first antenna portion....
|
|
|
5543808 |
Dual band EHF, VHF vehicular whip antenna
A dual-band antenna in which EHF signals are connected to one end of a wauide and radiated from the other and wherein a half-dipole for VHF signals is connected to the radiating end of the...
|
|
|
5465099 |
Detectable device and movable item detecting system
A detectable device attachable to a movable item for detecting movement. Radio waves having a predetermined frequency are received by the detectable device, and radio waves having a harmonic...
|
|
|
5457469 |
System including spiral antenna and dipole or monopole antenna
A broadband antenna system includes a frequency-dependent antenna and a frequency-independent antenna rotatably coupled to the frequency-dependent antenna. The antenna system may be arranged such...
|
|
|
5289198 |
Double-folded monopole
A double-folded monopole is used on a linear antenna to produce a traveling-wave distribution of current. The double fold is positioned one-quarter wavelength from the end of the antenna. The...
|
|
|
5257032 |
Antenna system including spiral antenna and dipole or monopole antenna
A broadband antenna system including a frequency-dependent antenna and a frequency-independent antenna coupled to the frequency-dependent antenna. The antenna system can be arranged so that a...
|
|
|
5166697 |
Complementary bowtie dipole-slot antenna
The antenna system includes a complementary "bowtie" dipole-slot antenna, the antenna having symmetrical halves about a plane of symmetry. The two halves of the antenna are slanted at the plane of...
|
|
|
5136303 |
Wrist watch type receiver
A pair of bands are each secured at one end to one side of a case wherein a radio receiver is housed, and a monopole antenna having a length of 0.005λ has one end connected to the feeding point of...
|
|
|
4658260 |
Telescoping multiband antenna
A plural band telescopic antenna, including a band for frequencies much higher than the frequencies of the AM/FM band, is realized by making one telescopic section into a dipole high frequency...
|
|
|
4598296 |
Dipole antenna system with overhead coverage having equidirectional-linear polarization
A vertically oriented dipole antenna system for filling in overhead radiation or reception coverage with equidirectional-linear polarization (a linearly polarized field vector which lies in the...
|
|
|
4451829 |
Circularly polarized antenna formed of a slotted cylindrical dipole
An antenna, particularly suitable for two-way communication between a communication satellite and an aircraft in flight, having a circular polarization response, comprising a T-matched dipole...
|
|
|
4382260 |
Two channel transmit only antenna
The two channel transmit only antenna includes a balanced antenna and a ground plane disposed between the two radiators of the balanced antenna. The two radiators are fed by a three wire...
|
|
|
4340891 |
Dual polarized base station receive antenna
A communication system for receiving signals from both relatively low power level portable transmitters and relatively high power mobile transmitters wherein the receiving antenna utilizes...
|
|
|
4032921 |
Broad-band spiral-slot antenna
A broad-band antenna device comprising a variable aperture element which radiates or receives signals in the high frequency portion of the band and a pair of fixed aperture elements which radiate...
|
|
|
3952310 |
Crossed dipole and slot antenna in pyramid form
Crossed dipole antenna apparatus configured so that the ends of adjacent dipoles are connected together to form a version of folded dipole antennas wherein there are slot antennas between adjacent...
|
|
|
3877014 |
Wide scan angle antenna utilizing surface wave and multiple element array modes of operation
An antenna capable of 180° scan with improved gain characteristics at end-fire is realized by combining multiple element array and surface wave antenna structures. An end-fire feed element is...
|
|
|
3813674 |
CAVITY BACKED DIPOLE-SLOT ANTENNA FOR CIRCULAR POLARIZATION
Aerial for receiving or transmitting circularly polarized electromagnetic radiation includes a dipole mounted substantially within the aperture of a slot and means for coupling the slot to the...
|
|
|
3803617 |
HIGH EFFICIENCY MULTIFREQUENCY FEED
The apparatus of the present invention relates to antenna systems and particularly to compact and simple antenna feeds which can transmit and receive simultaneously in at least three frequency...
|
|
|
3789412 |
AIRCRAFT ANTENNA BALANCE TECHNIQUES
Antenna balance and coupling circuitry for providing rejection of radio fuency signals produced by airframe currents flowing in a vertically polarized dipole antenna installed on an airborne...
|
|
|
3745581 |
DUAL BAND FOLDING ANTENNA
A dual band folding antenna is provided which includes first and second elongated booms disposed in adjacent, parallel relationship and means coupling the booms together for relative sliding...
|
|
|
3742510 |
MULTIMODE DISCONE ANTENNA
A turnstile antenna includes four arms disposed concentric of a vertical axis and orthogonally related to each other so that diagonally related arms form a dipole. The four arms are physically and...
|
|
|
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.
|
|
|
3735413 |
MULTIFREQUENCY ANTENNA SYSTEM INCLUDING AN ISOLATION SECTION OPEN CIRCUITED AT BOTH ENDS
A multifrequency antenna system including a center fed dipole element one-half wavelength long at the lowest frequency of operation is described. This dipole element has circuit elements at...
|
|
|
3611389 |
VOR ANTENNA
A VOR antenna construction using printed circuit techniques for the radiators as well as for the balun transformers. The rotating cardioid pattern is generated by the combination of a turnstile and...
|
|
|
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...
|
|
|
3522608 |
TELESCOPING VHF-UHF ANTENNA FOR A TELEVISION RECEIVER
|
|
|
3521286 |
ORTHOGONAL ARRAY ANTENNA SYSTEM
|
|
|
3518684 |
DUPLEX ANTENNA SYSTEMS FOR AIRCRAFT TRANSCEIVERS
|
|
|
3478361 |
INDOOR TELEVISION ANTENNA WITH ROTATABLE RINGS
|
|
|
3426351 |
DUAL BEAM ANTENNA FOR SATELLITES
|
|
|
3205499 |
Dual polarized horn antenna
|
|
|
3172111 |
Multi-polarized single element radiator
|
|
|
3150376 |
Multi-band log periodic antenna
|
|
|
3141169 |
Omnidirectional beacon antenna having dipole radiator and parasitically fed horn radiator
|
|
|
3139620 |
Coaxial multiband antenna
|
|
|
2982959 |
Antenna for both horizontally and vertically polarized waves
|