Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8144064 | Physically small tunable narrow band antenna A narrow band, tunable antenna uses a series of small inductors wired in series to produce different resonant frequencies from a single antenna across a wide frequency spectrum. Radio Frequency (RF) switches are positioned in parallel with the inductors and are capa... | 03/27/2012 |
| 7286100 | Adjustable antenna apparatus and method An adjustable antenna apparatus and method includes an antenna wire control device for controlling the release and retrieval of antenna wire. Antenna wire is attached to the antenna wire control device and an antenna wire tensioning device is attached to the antenna... | 10/23/2007 |
| 7277739 | Communication device A communication device. The communication device comprises a body, a circuit board, an antenna unit and a cap. The body is host receiving the circuit board therein, and the antenna unit electronically connected to the circuit board is located at one side of the body... | 10/02/2007 |
| 6940471 | Helical antenna This invention relates to antennae and in particular to antennae of the multi-element helically wound type. An helical antenna according to the invention has at least one conductive helix having a vertically orientated central longitudinal axis wherein the helix is ... | 09/06/2005 |
| 6906684 | Controlling a telescopic antenna mast A receiver receives an electromagnetic signal via an antenna mounted on an antenna mast. A signal evaluator determines or measures a signal quality level associated with the received electromagnetic signal. The signal quality compares the determined signal quality l... | 06/14/2005 |
| 6665543 | Antenna extraction on removal of stylus for handheld device An antenna configuration for storing and deploying an antenna used with a hand-held wireless device, and method thereof. The device housing has a molded opening for holding a stylus element used with the device. The antenna is also stored in the housing w... | 12/16/2003 |
| 6201511 | Composite antenna for duplexer-free duplex operation terminals and method An antenna assembly includes a receiving antenna and a separate transmitting antenna with an isolation circuit disposed in between to thereby isolate the Tx and Rx signals and provide a sufficient amount of attenuation outside the desired frequency band. ... | 03/13/2001 |
| 5748146 | Parallax induced polarization loss to reduce sidelobe levels A sidelobe reduction benefit in a two-way pattern is accomplished when each attern (transmit or receive) has the same character as traditionally designed, but they differ in polarization. When polarization mismatch is included in the antenna pattern charac... | 05/05/1998 |
| 5694140 | Non-squinting mast antenna and closed loop control thereof A non-squinting helical antenna is divided into segments separated by a coupler. This coupler is preferably a four port coupler which serves as a summation and difference power divider. Such a four port coupler allows the formation of a closed loop for co... | 12/02/1997 |
| 5436633 | Adjustable antenna assembly for a portable telephone An adjustable antenna assembly for a portable telephone includes a tubular base removably attached to a portable telephone, a socket securely received in the tubular base and having an outer periphery which is threaded in an upper end thereof, a coil rece... | 07/25/1995 |
| 5274393 | Adjustable helical antenna for a VHF radio A VHF radio (10) which includes an adjustable antenna (20) formed from a component (28) shaped like an open helical compression spring which engages and can be screwed into a metal supporting collar (40) for tuning the antenna (20). An elongated plastic o... | 12/28/1993 |
| 5028932 | Inverted delta high efficiency loop antenna for all high frequencies A flexible antenna which operates to control both the reactance as well as the resistance of the antenna. A motorized pulley system attached between two supports is utilized to control the effectrive length of the wire as well as the height of the antenna... | 07/02/1991 |
| 4803493 | Mobile antenna circuit with variable line length A mobile antenna circuit for resonant transmitting from an RF signal source may comprise: an antenna having a base and at least first and second conductive sections one of which is extendable and retractable to lengthen and shorten the antenna; a motor op... | 02/07/1989 |
| 4259672 | Multi-band vertical antenna A vertical antenna which is omnidirectional and includes completely automatic band switching for the amateur radio frequencies of, eighty/seventy-five meters, forty meters, twenty meters, fifteen meters, and ten meters. The vertical antenna has a low angl... | 03/31/1981 |
| 4222053 | Multi-band vertical antenna A vertical antenna which is omnidirectional and includes completely automatic band switching for the amateur radio frequencies of one hundred and sixty meters, eighty-seventyfive meters, forty meters, twenty meters, fifteen meters, and ten meters. The ver... | 09/09/1980 |
| 4117495 | Self-tuning deployable antenna An extensible antenna assembly defined by a strip wound into a coil and extensible out of the coil through a guide for forming the strip into an elongated tubular length. In two embodiments the strip is made of a metal whereby the tubular length establish... | 09/26/1978 |
| 4104639 | Antenna formed of two closely coupled linear conductors with helical top loading A radio frequency antenna comprising a shaft fabricated from dielectric material, and first and second conducting means disposed on the exterior surface of the shaft, the conducting means including linear conductors located on opposite sides of one portio... | 08/01/1978 |
