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| Number | Title | Issue Date |
| 7884775 | Multi-resonant microstrip dipole antenna A multi-band antenna for use, for example, in a wireless communications network, employs multi-resonant microstrip dipoles that resonate at multiple frequencies due to microstrip “islands.” Gaps in the microstrips create an open RF circuit except for desired fre... | 02/08/2011 |
| 7417549 | Automated antenna trim for transmitting and receiving semiconductor devices A radio frequency communication device and method for tuning an antenna attached thereto are disclosed. A radio frequency communication device is disclosed comprising internal circuitry and an antenna having a plurality of antenna segments associated therewith. Each... | 08/26/2008 |
| 7388555 | Adjustable-frequency two-element bowtie antenna An adjustable-frequency two-element bowtie antenna includes a support member on which first and second non-conductive hollow element support arms are mounted. Each support arm includes first and second opposing segments. The first and second segments of each element... | 06/17/2008 |
| 7228156 | RF-actuated MEMS switching element An RF-actuated microelectromechanical systems (MEMS) switch for use with switchable RF structures such as antennas and reflectors is disclosed. An antenna within each MEMS switch module is coupled to a circuit that provides a trigger voltage based on an RF control s... | 06/05/2007 |
| 7209096 | Low visibility dual band antenna with dual polarization A low visibility, field-diverse, dual band antenna provides cross-polarized fields enhancing signal communications. A generally flat, but helical, antenna is achieved in conjunction with a core substrate about which the antenna is wrapped, wound, or fixed. The core ... | 04/24/2007 |
| 7170461 | Conical dipole antenna and associated methods The dipole antenna includes a first antenna element assembly and a second antenna element assembly arranged in a dipole antenna configuration. The first antenna element assembly has one or more conical antenna elements, and the second antenna element assembly has a ... | 01/30/2007 |
| 7151501 | Microelectromechanical switch (MEMS) antenna A MEMS antenna is provided comprising a dielectric layer, and a conductive line radiator formed overlying the dielectric layer including at least one selectively connectable MEMS conductive section to vary the mechanical (physical) length of the radiator. The antenn... | 12/19/2006 |
| 7132778 | Surface acoustic wave modulator An acoustic wave identification transponder device, having a substrate, an electroacoustic transfer generating an acoustic wave in said substrate and a set of encoding elements disposed in a path of the acoustic wave for modifying the acoustic wave, having elements ... | 11/07/2006 |
| 6950077 | Antenna system for terrestrial broadcasting Provided is an antenna system for terrestrial broadcasting. The antenna system has a dipole antenna probe receiving a broadcast signal, a signal amplifier amplifying the received broadcast signal, an antenna matching unit matching impedances between the antenna prob... | 09/27/2005 |
| 5894287 | Polarization diversity device for reducing fading effect A polarization diversity device for reducing a fading effect. The polarization diversity device for reducing a fading effect, which has a microstrip disk type of antenna for outputting a signal received from a first position, in the form of a field dipole... | 04/13/1999 |
| 5706018 | Multi-band, variable, high-frequency antenna A multi-band, variable, high-frequency antenna comprises a pair of transmission lines for conveyance of signals from and to a transceiver, and a pair of braided copper conductor elements, each in electrical communication at a proximal end thereof with one... | 01/06/1998 |
| 5625367 | Variable capacitance antenna for multiband reception and transmission A variable capacitance antenna allows individual adjustment of linear resonators on a beam antenna. A linear resonator is associated with each dipole element on a common support boom. A variable capacitance is positioned inside the boom and created using ... | 04/29/1997 |
| 5221930 | Adjustable dipole antenna A drum is used to wind and unwind conductors that comprise the elements of an adjustable dipole antenna. The length of the elements is adjusted by rotating the drum. As the elements are unwound, they extend into tubular TEFLON guides that provide support ... | 06/22/1993 |
| 5168279 | Antenna for sensing stray RF radiation An antenna for sensing stray RF radiation, such as from electronic equipment, is positioned within a dielectric enclosure. For the case of a dipole sensing antenna, the enclosure may take the form of a clear acrylic (i.e., Plexiglas) tube. This tube assur... | 12/01/1992 |
| 5101214 | Adjustable length folded dipole antenna An antenna device includes a base, a metal band having two opposite ends, a reel disposed within the base and having one end of the band connected thereto for winding the band thereon, the opposite end of the band being received in the base, and a guide r... | 03/31/1992 |
| 4801943 | Plane antenna assembly A plane antenna assembly comprises a plurality of antenna bases and a signal composing means including amplifiers each connected to output part of each antenna base for composing respective outputs of the antenna bases amplified through the amplifiers, wh... | 01/31/1989 |
| 4663632 | Extendable directional dipole antenna The invention pertains to an extendable directionally adjusted dipole antenna particularly suitable for use with recreational vehicles. The antenna includes a vertical column having an extendable dipole arrangement at its upper end utilizing flexible actu... | 05/05/1987 |
| 4201990 | Tunable dipole antenna A radio antenna having linear radiating elements, a loading coil electrically connected to these linear radiating elements and a tuning disc located within the loading coil and rotatable about a diameter of the loading coil whereby said antenna can be eas... | 05/06/1980 |
| 4028709 | Adjustable yagi antenna A yagi antenna having a director element, a half-wave active dipole element, and a reflector element mounted on an antenna boom. All antenna elements are rods that are telescopically adjustable in length from a collapsible position to an operating length ... | 06/07/1977 |
| 3995276 | Customized antenna with insertable antenna elements An antenna primarily for receiving electromagnetic signals and for converting the same to electrical signals for input to a television, FM receiver, or the like, is readily adapted for customizing for maximum efficiency in signal reception at close, norma... | 11/30/1976 |
| 3958248 | Tunable dipole antenna for television receivers A dipole antenna adjustable in span and distance to the reflector provides higher gain reception for a television receiver. By maintaining the ratio of span to distance constant optimum tuning is possible over a given band of frequencies. Tuning adjustmen... | 05/18/1976 |
