Patents by Inventor Peder M. Hansen
Peder M. Hansen 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).
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Patent number: 8311752Abstract: A method for quantifying the effective loss of a mast-clamp-current-probe (MCCP) antenna comprising the following steps: providing a vector network analyzer (VNA) having first and second ports (Ports 1 and 2 respectively); coupling a transmit monopole antenna to Port 1 via a first transmission line; coupling a receive antenna to Port 2 via a second transmission line; determining the S-parameters of the two coupled antennas; calculating the power at the receive antenna (Pr); converting the transmit antenna to the MCCP antenna by shorting the transmit antenna to ground and clamping a current probe around the transmit antenna; determining the S?-parameters of the MCCP antenna and the receive antenna; calculating the power at the receive antenna (Pr?) when coupled to the MCCP antenna; and quantifying the effective loss of the MCCP antenna as the difference Pr?Pr?.Type: GrantFiled: October 21, 2010Date of Patent: November 13, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventors: Daniel W. Tam, Peder M. Hansen, Daniel R. Gaytan
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Patent number: 6951987Abstract: A high voltage bushing includes an electrically conductive coupling having an aperture; first and second dielectric tubes mounted to the coupling so that they are coaxially aligned and have first and second ends, respectively, first and second end plates mounted in a fluid tight manner to the first and second ends of the first and second tubes, respectively; an electrically conductive ground shield mounted in the aperture, and having an inwardly profiled end for moderating an electric field along the bushing, and having second and third apertures; and a center conductor that extends through the second and third apertures of the ground shield, and is mounted to the first and second end plates.Type: GrantFiled: January 31, 2003Date of Patent: October 4, 2005Assignee: United States of America as represented by the Secretary of the NavyInventors: Peder M. Hansen, David B. Phillips, Jose L. Chavez
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Patent number: 6054964Abstract: In an umbrella top-loaded monopole (UTLM) antenna, the charge distribution n top-load radials increases approximately linearly from the top of the antenna because the activated top-load wires are separating from the tower and each other at the same time they are getting closer to ground. The UTLM antenna of the invention incorporates a top-load configuration in which top-load elements, whether they be radiating or receiving, are arranged in sections of rhombic-shaped frames that originate at the top of the antenna and that extend away from the antenna towards the antenna's base where, at those points of the configuration furthest from the antenna tower and closest to ground at least two top-load elements converge to shield each other and hence reduce charge density. The top-load sections are disposed between the vertical guy wire planes of an antenna to ease their installation, repair and maintenance. The self-shielding effect of the invention permits an antenna to operate at considerably higher voltage.Type: GrantFiled: May 30, 1997Date of Patent: April 25, 2000Assignee: The United States of America as represented by the Secretary of the NavyInventors: Peder M. Hansen, James H. Schukantz, Robert D. Prince
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Patent number: 5739738Abstract: An inflatable high Q toroidal inductor is fabricated from an inflatable tidal-shaped shell made from a flexible material provided with a fitting adapted to receive and vent pressurized gas. A pair of flexible strips are disposed on opposite sides of the inflatable toroidal-shaped shell to hold litz windings in a predetermined toroidal configuration to thereby provide a suitable inductor of high Q and low loss. The inductor may be compactly carried to a remote instrumentation site, inflated and used and then deflated, folded and taken to the next site for reuse.Type: GrantFiled: July 18, 1994Date of Patent: April 14, 1998Assignee: The United States of America as represented by the Secretary of the NavyInventors: Peder M. Hansen, Eldred M. Smith
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Patent number: 5673055Abstract: In an umbrella top-loaded monopole (UTLM) antenna, the charge distribution on top-load radials increases approximately linearly from the top of the antenna because the activated wires are separating from the tower and each other at the same time they are getting closer to ground. The UTLM antenna of the invention incorporates a top-load configuration in which top-load elements, whether they be radiating or receiving, are arranged in the shape of frames that originate at the top of the antenna and that extend away from the antenna towards the antenna's base where, at those points of the configuration furthest from the antenna tower and closest to ground at least two top-load elements converge to shield each other and hence reduce charge density. The top-load frames may be arranged contiguously such as in a rosette configuration. The self-shielding effect of the invention permits an antenna to operate at considerably higher voltage.Type: GrantFiled: April 21, 1994Date of Patent: September 30, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventor: Peder M. Hansen
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Patent number: 4492962Abstract: A low-power adaptive array for transmitting a signal may be used by itself in low-power applications or in high-power applications in conjunction with a commercial radio transmitter to optimize the radiation field of the transmitter used. The adaptive system comprises a continuous-wave (C-W) signal source having a certain amount of power. A power divider hybrid circuit, whose input is connected to the output of the C-W generator, divides its output power into N+1 parts. N quadrature hybrid circuits, one in each of N channels, whose inputs are connected to the output of the power divider hybrid circuit, divide their input signals into two quadrature components. One channel, a reference channel, does not require a quadrature circuit. A plurality of attenuators, each having inputs from the power divider hybrid circuit and the quadrature hybrid circuits, attenuates the power received from the quadrature hybrid circuit.Type: GrantFiled: August 31, 1981Date of Patent: January 8, 1985Inventor: Peder M. Hansen
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Patent number: 4393350Abstract: Method and apparatus for detecting tunnels, voids or other anomalies bene an area of the earth's surface wherein an oscillator couples a current into two conductors laid parallel to each other to generate two magnetic fields in the earth beneath the area. The magnetic field is measured along a line midway between the two horizontal conductors to detect for an increase in the measured field which is an indication of the presence of an anomaly.Type: GrantFiled: May 18, 1981Date of Patent: July 12, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventors: Peder M. Hansen, John G. Hoffman, Elwin W. Seeley, Wesley A. Andrew
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Method and apparatus for detecting subterranean anomalies by generating two parallel magnetic fields
Patent number: 4290020Abstract: Improved method and apparatus for detecting anomalies beneath an area of earth's surface wherein an oscillator couples a current into two conductors laid parallel to each other to generate two magnetic fields in the earth beneath the area. The magnetic field is measured along a line midway between the two horizontal conductors to detect for an increase in the measured field which is an indication of the presence of an anomaly.Type: GrantFiled: April 20, 1979Date of Patent: September 15, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Peder M. Hansen, John G. Hoffman, Elwin W. Seeley, Wesley A. Andrew -
Patent number: 4227249Abstract: A coded signal is added in the transmitting channel of a communications sem to provide, at the receiver site, an adaptive processor with a reference signal for adaption. At the receiver site, the reference signal is removed to provide an error signal which is fed to the adaptive array processor. The error signal is also fed directly to the communications receiver without further processing.Type: GrantFiled: August 9, 1976Date of Patent: October 7, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventor: Peder M. Hansen
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Patent number: H1571Abstract: A compact transmitting and receiving antenna has dual feeds permitting magnetic and electric dipole radiation. The antenna includes a loop antenna disposed within a loop shield and a mast. The loop shield is insulated from ground and a feed is provided to it and the mast to excite these as an electric monopole. The shield becomes part of the monopole antenna and provides the benefits of top-loading. An isolation transformer permits the simultaneous transmission of monopole and dipole radiation. The transformer converts an unbalanced coaxial feed line to the balanced loop antenna and isolates the monopole feed voltage from the loop antenna feed. To eliminate the affect of the monopole feed on the loop feed, and vice versa, the components on the high side of the monopole feed (the loop shield and mast) are driven in common mode (voltage) by the monopole feed, and will not couple the loop antenna feed through the transformer windings.Type: GrantFiled: June 29, 1994Date of Patent: August 6, 1996Inventors: Peder M. Hansen, James H. Schukantz