Glen J Seward from Columbus, IN, age 96

Multiplexer For Sorting Multiple Signals From An Antenna
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US Patent:

6384696, May 7, 2002
Filed:

May 9, 2000
Appl. No.:

09/568211
Inventors:

Paul E. Miller - Spring Lake MI
Paul A. Bogdans - Grand Haven MI
Glen J. Seward - Cincinnati OH
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H03H 746
US Classification:

333132, 343722
Abstract:

A multiplexer circuit adapted to receive signals comprises two filter circuits. The first filter circuit presents a high impedance to signals outside a first frequency range and the second circuit presents a high impedance to signals outside a second frequency range. Isolation matching circuits enable transmission and reception of one of the signals in the first or second frequency ranges without degradation or interference with the other range. An embodiment allows transmission and reception of satellite Orbcomm frequencies over a standard AM/FM antenna without effect on the AM/FM signal.

Multiplexer For Cellular Telephone
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US Patent:

6396365, May 28, 2002
Filed:

Mar 20, 2000
Appl. No.:

09/532176
Inventors:

Paul E. Miller - Spring Lake MI
Glen J. Seward - Cincinnati OH
Paul A. Bogdans - Grand Haven MI
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H01P 1213
US Classification:

333129, 333132, 455550, 455 78
Abstract:

A multiplexer circuit adapted to receive standard cellular telephone signals and PCS signals without user intervention comprises two filter circuits. The first filter circuit presents a high impedance to signals outside the standard cellular frequency range from one antenna and the second circuit presents a high impedance to signals outside the higher PCS frequency range from a second antenna. A cell phone adapted to receive both frequency ranges will automatically detect the appropriate signal.

High Powered Multiband Antenna
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US Patent:

6985121, Jan 10, 2006
Filed:

Oct 12, 2004
Appl. No.:

10/711906
Inventors:

Paul A. Bogdans - Grand Haven MI, US
Glen J. Seward - Cincinnati OH, US
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H01Q 9/16
US Classification:

343792, 343791, 343790
Abstract:

A multiband antenna has a lower conductive tube and three or more upper conductive tubes, all spaced from each other and disposed on the same longitudinal axis. A transmission line extends within the lower conductive tube to a first feed point and a second transmission line extends within the lower conductive tube and one or more of the upper conductive tubes to a second feed point. The lower and upper conductive tubes form a dipole radiator centered on the first feed point. The upper conductive tubes form a dipole radiator centered on the second feed point. One or more isolation circuits resonate in only one frequency band for signals transmitted along one of the transmission lines.

Antenna With Graduated Isolation Circuit
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US Patent:

7053850, May 30, 2006
Filed:

Oct 12, 2004
Appl. No.:

10/711907
Inventors:

Paul A. Bogdans - Grand Haven MI, US
Glen J. Seward - Cincinnati OH, US
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H01Q 9/16
US Classification:

343792, 343790, 343793
Abstract:

A multiband antenna has a lower radiator and several upper radiators, all of which are spaced from each other and disposed on the same longitudinal axis. The lower radiator and the upper radiators form a dipole radiator that resonates in a lower frequency band. The upper radiators form a dipole radiator that resonates in a higher frequency band. Multiple isolation circuits in the upper radiators resonate at different frequencies within the lower frequency band.

Dual Dipole Antenna With Isolation Circuit
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US Patent:

7053851, May 30, 2006
Filed:

Oct 12, 2004
Appl. No.:

10/711910
Inventors:

Paul A. Bogdans - Grand Haven MI, US
Glen J. Seward - Cincinnati OH, US
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H01Q 9/16
US Classification:

343792, 790793
Abstract:

A multiband antenna has a dipole radiator that resonates in a lower frequency band, and a stacked dual dipole radiator that resonates in a higher frequency band. An isolation circuit, tuned to block signals in the higher frequency band, is connected between one end of the stacked dual dipole radiator and the lower frequency dipole radiator to isolate the higher frequency band from the lower frequency band.

Antenna With Power Matching Circuit
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US Patent:

7180460, Feb 20, 2007
Filed:

Oct 12, 2004
Appl. No.:

10/711908
Inventors:

Paul A. Bogdans - Grand Haven MI, US
Glen J. Seward - Cincinnati OH, US
John Jeremy Churchill Platt - Grand Haven MI, US
Assignee:

R. A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H01Q 9/16
US Classification:

343792, 343790, 343793, 343715
Abstract:

A mobile antenna includes a center-fed, broadband, dipole radiator, and a coupler assembly for mounting the dipole radiator to a mount. A power matching circuit is connected between the dipole radiator and the coupler assembly to maintain an effective balance of current distribution and impedance in conductive elements of the antenna.

Radio Frequency Multiplexer For Coupling Antennas To Am/Fm, Cb, And Television Apparatus
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US Patent:

7884684, Feb 8, 2011
Filed:

Aug 22, 2008
Appl. No.:

12/196852
Inventors:

Glen J. Seward - Cincinnati OH, US
Robert B. Ennenga - Grand Haven MI, US
Paul E. Miller - Spring Lake MI, US
Assignee:

R.A. Miller Industries, Inc. - Grand Haven MI
International Classification:

H03H 7/46
H03H 7/38
H04B 1/18
US Classification:

333129, 333132, 455 82, 370201, 343850, 348729
Abstract:

A multiplexer circuit for CB, AM/FM, and television splits the radio and television signals, adding impedance to the split lines, and providing an amplifier upstream of the split.

Apparatus For And Method Of Impedance Matching
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US Patent:

44853602, Nov 27, 1984
Filed:

Jul 16, 1982
Appl. No.:

6/398852
Inventors:

Glen Seward - Cincinnati OH
Assignee:

Cincinnati Electronics Corporation - Cincinnati OH
International Classification:

H03H 740
US Classification:

333 17M
Abstract:

An rf load is matched to an rf source by a matching network having series and shunt impedances connected between the source and load. A network coupled to the load derives a first rf signal responsive to rf energy reflected from the load. Another network responsive to the first rf signal derives plural rf signals, each having an amplitude that is a different function of the magnitude and phase angle of the reflected energy. In response to the amplitudes of the plural rf signals, the values of the series and shunt impedances are controlled.