Patents by Inventor John Richard Sanford

John Richard Sanford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20040072551
    Abstract: Integrated RF components in the radio frequency (RF) front end of a communication device where the RF front-end components perform the RF front-end functions 3-1, 3-2, . . . , 3-k, 3-k+1), 3-k+2) . . . , 3-K that represent any K number of RF functions useful in a communication device. Groups of the K functions, for example the functions 3-k, 3-k+1), 3-k+2)′, are integrated into a common integrated component. An antenna function for converting between radiated and electronic signals is integrated with a filter function for limiting signals within operating frequency bands to form a filtenna.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Inventor: John Richard Sanford
  • Publication number: 20040072542
    Abstract: Integrated RF components in the radio frequency (RF) front end of a communication device. The RF front end includes an antenna function for converting between radiated and electronic signals, includes a filter function for limiting signals within operating frequency bands, an amplifier function for boosting signal power and a mixer function for shifting frequencies between RF and lower frequencies. The receive antenna function is separate from the transmit antenna function where two different integrated filters/antennas (filtennas) are employed, a filtenna for the receive path and a filtenna for the transmit path.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Inventor: John Richard Sanford
  • Publication number: 20040072549
    Abstract: Integrated RF components in the radio frequency (RF) front end of a communication device. The RF front end includes an antenna function for converting between radiated and electronic signals, includes a filter function for limiting signals within operating frequency bands, an amplifier function for boosting signal power and a mixer function for shifting frequencies between RF and lower frequencies. The receive antenna function is separate from the transmit antenna function where a common integrated filter/antenna (filtenna) is employed for both the receive path and the transmit path.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Inventor: John Richard Sanford
  • Patent number: 6556811
    Abstract: An air cooled transceiver enclosure which includes multiple cooling posts about the enclosure. The transmitter and receiver antennas are planar mounted above the cooling posts and the cooling posts are selected so as not to interfere with the radiation and form part of the ground plane. The cooling posts are, in general, of a height which is less than one-quarter the wave length of the frequencies to be used. In accordance with another feature of the present invention, the transceiver base unit with cooling posts and mounted antennas has an easily attachable cover which is removably engaged to the transceiver base unit and offset from the planar antennas which lie above the base unit. In accordance with another feature of the invention, the transceiver base unit with cooling posts and mounted antennas has an easily attachable cover which is removably engaged to the transceiver base unit and offset from the planer antennas which lie above the base unit.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 29, 2003
    Assignee: Cisco Technology Inc.
    Inventors: Ian Leslie Sayers, John Richard Sanford