Randy Cecil Bancroft
Engineers at Perry St, Denver, CO
License number
Colorado 37667
Issued Date
Jun 3, 2003
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
2837 Perry St, Denver, CO 80212
Professional information
Randy Bancroft P.e.
Position:
Chief Engineer at Randwulf Technologies
Location:
Greater Denver Area
Industry:
Wireless
Work:
Randwulf Technologies
since Sep 2007
-
Chief Engineer
Laird Technologies
May 2005 - Aug 2007
-
Technology Fellow
Laird Technologies
Oct 1998 - May 2005
-
Senior Antenna Engineer
Education:
University of Colorado at Boulder 1991 - 1992
MSEE, Electrical Engineering California State University-Northridge 1984 - 1984
Iowa State University 1977 - 1983
BSEE, Electrical Engineering
MSEE, Electrical Engineering California State University-Northridge 1984 - 1984
Iowa State University 1977 - 1983
BSEE, Electrical Engineering
Skills:
Antenna/Microwave design/analysis using FDTD, HFSS, MoM and traditional methods
Honor & Awards:
Electronics Products Product of the Year Award Winner January 2007, Thomson Consumer Electronics Technical Excellence Award, Thomson Consumer Electronics Peer Award, Eight US Patents Awarded
Multi-Band Planar Antenna
US Patent:
6661380, Dec 9, 2003
Filed:
Apr 5, 2002
Appl. No.:
10/117963
Inventors:
Randy C. Bancroft - Denver CO
Michael D. Zinanti - Wheat Bridge CO
Shanna Carroll French - Morrison CO
Blaine R. Bateman - Louisville CO
Michael D. Zinanti - Wheat Bridge CO
Shanna Carroll French - Morrison CO
Blaine R. Bateman - Louisville CO
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 138
US Classification:
343700MS, 343846, 343702
Abstract:
A compact planar antenna is disclosed wherein a radiating element in the shape of a right triangle is formed on a substrate. A ground plane may be positioned on one or both sides of the substrate. A slot extends into the radiating element from one side thereof.
Omni-Directional Antenna Arrays And Methods Of Making The Same
US Patent:
6774855, Aug 10, 2004
Filed:
Jan 15, 2003
Appl. No.:
10/342621
Inventors:
Blaine R. Bateman - Louisville CO
Randy Bancroft - Denver CO
Gary Cumro - Alvo NE
Randy Bancroft - Denver CO
Gary Cumro - Alvo NE
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 138
US Classification:
343700MS, 343790
Abstract:
The present invention provides a support for an antenna. In particular, the present invention provides a substrate with conductive transition pads for a co-linear coaxial antenna array. The transition pads are constructed and arranged to properly provide power and phase shifting to the antenna array.
Compact Planar Antenna
US Patent:
6664926, Dec 16, 2003
Filed:
Mar 12, 2002
Appl. No.:
10/096407
Inventors:
Michael D. Zinanti - Wheat Ridge CO
Shanna Carroll French - Morrison CO
Randy C. Bancroft - Denver CO
Blaine R. Bateman - Louisville CO
Shanna Carroll French - Morrison CO
Randy C. Bancroft - Denver CO
Blaine R. Bateman - Louisville CO
Assignee:
Centurion Wireless Tech., Inc. - Lincoln NE
International Classification:
H01Q 138
US Classification:
343700MS, 343846, 343702
Abstract:
A compact planar antenna is disclosed wherein a radiating element in the shape of a right triangle is formed on a substrate. A ground plane may be positioned on one or both sides of the substrate. In one embodiment, the radiating elements are positioned on the substrate in groups of two or more in close proximity to one another. In another embodiment, the radiating elements are arranged in an array.
Broadband Microstrip Antenna Having A Microstrip Feedline Trough Formed In A Radiating Element
US Patent:
6313798, Nov 6, 2001
Filed:
Jan 21, 2000
Appl. No.:
9/488883
Inventors:
Randy Cecil Bancroft - Denver CO
Blaine Rexel Bateman - Louisville CO
Alexis Uspenski - New Middleton OH
Blaine Rexel Bateman - Louisville CO
Alexis Uspenski - New Middleton OH
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 138
US Classification:
343700MS
Abstract:
A microstrip antenna includes a ground plane element and a radiating element. An elongated trough is formed generally in the middle of the radiating element so as to divide the radiating element into two generally equally-sized portions, and in a manner to extend outward from a bottom surface of the radiating element. The trough includes a first side edge, a second side edge, and a bottom surface. A first radiating portion extends from the first side edge, and a second radiating portion extends from the second side edge. The trough provides an elongated microstrip-size element at the bottom surface of the trough. A relatively thin dielectric layer is provided between the bottom surface of the trough and a corresponding portion of the ground plane element, thereby providing that a microstrip transmission line is formed by the bottom surface of the trough, the thin dielectric layer, and the corresponding portion of the ground plane element. A first feed conductor is connected to the ground plane element, and a second feed conductor is connected to the bottom of the trough.
Antenna Arrays And Methods Of Making The Same
US Patent:
2004020, Oct 14, 2004
Filed:
Apr 2, 2004
Appl. No.:
10/817353
Inventors:
Blaine Bateman - Louisville CO, US
Randy Bancroft - Denver CO, US
Randy Bancroft - Denver CO, US
International Classification:
H01Q001/38
US Classification:
343/7000MS
Abstract:
The present invention provides an antenna array. The antenna array comprises a substrate having a first side and a second side opposite the first side. The first side has a first conductor comprising narrow elements and wide elements. The second side has a second conductor comprising narrow elements and wide elements. Such that the first conductor narrow elements are above the second conductor wide elements and the first conductor wide elements are above the second conductor narrow elements. The first conductor further has a feed element and a terminating element.
Antenna Arrays And Methods Of Making The Same
US Patent:
7518554, Apr 14, 2009
Filed:
May 8, 2006
Appl. No.:
11/382190
Inventors:
Blaine Rexel Bateman - Superior CO, US
Randy Bancroft - Denver CO, US
Randy Bancroft - Denver CO, US
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 1/38
US Classification:
343700MS
Abstract:
An omni direction antenna comprising a substrate having a first side and a second side with a first conductor coupled to the first side of the substrate and a second conductor coupled to the second side of the substrate is provided. The first and second conductors comprise wide elements substantially aligned over narrow elements. The antenna further has a terminating element shorting the first and second conductors. A feed element is coupled to the first side wide element, the feed element comprising at least one transmission line, at least one impedance matching element, and at least one ground plane substantially aligned with the at least one transmission line.
Single Feed Dual-Band Pifa Realized On Circuit Board
US Patent:
7315285, Jan 1, 2008
Filed:
Oct 28, 2005
Appl. No.:
11/163760
Inventors:
Randy Bancroft - Denver CO, US
Nathan Stutzke - Louisville CO, US
Nathan Stutzke - Louisville CO, US
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 1/24
US Classification:
343702, 340700 MS
Abstract:
A single feed multiple band planar antenna is provided. The planar antenna includes a radiating plate having a first end and a second end opposite the first end residing in spaced apart relating to a ground plane. A shorting post couples the radiating element to the ground plane and a feeding post couples the radiating plate to radio frequency power. The planar antenna further includes a second radiating plate having a first end and a second end where the first end of the second radiating plate coupled to the feeding post and substantially aligned with the first end of the first radiating plate and located between the first radiating plate and the ground plane.
Antenna Joint Connector
US Patent:
7079087, Jul 18, 2006
Filed:
Sep 27, 2004
Appl. No.:
10/952030
Inventors:
Blaine Rexel Bateman - Louisville CO, US
Richard Loffler - Surrey, GB
Randy Bancroft - Denver CO, US
Richard Loffler - Surrey, GB
Randy Bancroft - Denver CO, US
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 1/50
US Classification:
343906, 343905, 439578
Abstract:
To attain the advantages of and in accordance with the purpose of the present invention, a connector for an antenna is provided. The connector comprises a nut, insulator, contact pin, sleeve, and a captive housing. The connector is such that the housing can be positioned and angled relatively to a radio frequency device as desired and then locked in place by tightening the nut (or interface) on the device.
Dual Slot Radiator Single Feedpoint Printed Circuit Board Antenna
US Patent:
7129902, Oct 31, 2006
Filed:
Feb 7, 2005
Appl. No.:
10/906184
Inventors:
Randy Bancroft - Denver CO, US
Assignee:
Centurion Wireless Technologies, Inc. - Lincoln NE
International Classification:
H01Q 13/10, H01Q 1/38
US Classification:
343767, 343700 MS
Abstract:
A dual slot radiator is provided. The dual slot radiator comprises two slot radiating elements of different lengths having a single power feed. The power feed generally comprises a microstrip feed line connected at a first end to a power source and each of the slot radiators at a second end.