Peter Sand Mailandt

US Patent:

7639196, Dec 29, 2009

Filed:

Apr 6, 2006

Appl. No.:

11/399627

Inventors:

Robert Douglas Elliot - Naperville IL, US
Martin L. Zimmerman - Chicago IL, US
Kevin Eldon Linehan - Rowlett TX, US
Peter Bruce Graham - Martinborough, NZ
Peter Mailandt - Dallas TX, US
Louis John Meyer - Shady Shores TX, US
Philip Sorells - Corinth TX, US
Andrew Thomas Gray - Pullman WA, US
Ching-Shun Yang - Naperville IL, US

Assignee:

Andrew LLC - Hickory NC

International Classification:

H01Q 3/00

US Classification:

343757, 343766, 343872

Abstract:

There is provided a cellular antenna allowing mechanical azimuth adjustment in combination with adjustment of one or more other antenna attribute such as electrical down tilt, electrical beam width or electrical azimuth adjustment. An integrated control arrangement is provided which can utilise either serial, wireless or RF feed lines to convey communications. A multiband embodiment provides azimuth adjustment for both bands by utilising mechanical and electrical azimuth adjustment. Systems incorporating such antennas and methods of controlling them are also provided.

US Patent:

8421701, Apr 16, 2013

Filed:

Apr 21, 2010

Appl. No.:

12/799227

Inventors:

Peter Mailandt - Dallas TX, US

Assignee:

dcSpectra, Inc. - Lewisville TX

International Classification:

H01Q 9/16

US Classification:

343793, 343800

Abstract:

An antenna element for use in an antenna assembly is provided. The antenna element includes a cylindrical tube. The antenna element also includes a plurality of fingers, each finger having a first end that is connected to the cylindrical tube and a second end that is free. Each finger protrudes inward from a wall of the cylindrical tube. The free end of each finger has an aperture configured to allow the finger to be soldered to a pipe disposed through a generally circular opening. An antenna assembly having at least one antenna element is also provided.

US Patent:

RE44332, Jul 2, 2013

Filed:

Dec 29, 2003

Appl. No.:

10/747818

Inventors:

Peter Mailandt - Dallas TX, US
Tan Huynh - Hurst TX, US

Assignee:

Andrew LLC - Hickory NC

International Classification:

H01Q 11/10

US Classification:

3437925, 343795, 343853, 333161

Abstract:

An antenna assembly having an operating frequency and a vertical radiation pattern with a main lobe axis defining a downtilt angle with respect to the earth's surface. The antenna assembly comprises a plurality of antennas in first, second, and third antenna groups physically disposed along a backplane, the backplane having a longitudinal axis along which the antennas are disposed, and a phase adjustment mechanism disposed electrically connected between the second first and third antenna groups, such that adjustment of the phase adjustment mechanism results in variation of the vertical radiation pattern downtilt angle.

US Patent:

57397317, Apr 14, 1998

Filed:

Jan 18, 1994

Appl. No.:

8/183054

Inventors:

John R. Hicks - Lone Oak TX
David W. Allen - Carrollton TX
Peter Mailandt - Dallas TX

Assignee:

Allen Telecom Group, Inc. - Solon OH

International Classification:

H01P 706

US Classification:

333 171

Abstract:

In one form of the invention, a resonant cavity filter (50) is disclosed, comprising an input port (210) for receiving an input signal, a dielectric resonator (204) in a cavity, the dielectric resonator operable to receive an input signal from the input port and further operable to produce an output signal at a resonant frequency of the cavity, an output port (212) operable to receive the output signal and a tuning plate (308) disposed in the cavity, the tuning plate coupled to a control means operable to cause movement of the tuning plate, thereby changing dimensions of the cavity, the control means operable to determine a frequency of the input signal, retrieve an expected tuning plate position from a memory (514) based on the frequency, and move the tuning plate to the expected position. Other systems, devices and methods are disclosed.

US Patent:

56192177, Apr 8, 1997

Filed:

May 19, 1995

Appl. No.:

8/444959

Inventors:

Peter Mailandt - Dallas TX
Ricardo Vazquez - Plano TX

Assignee:

Allen Telecom Group, Inc. - Dallas TX

International Classification:

H01Q 142

US Classification:

343872

Abstract:

An antenna assembly for cellular and PCS systems for mounting on a ceiling or wall surface of a building. The assembly includes a radome covering the antenna and a base, and a concealed mounting assembly including pins having snap retainers secured to the base and snap retainers secured to a bracket fixed to the wall or ceiling.

US Patent:

48232807, Apr 18, 1989

Filed:

Mar 12, 1987

Appl. No.:

7/025216

Inventors:

Peter Mailandt - Dallas TX
John R. Hicks - Lone Oak TX

Assignee:

Decibel Products, Inc. - Dallas TX

International Classification:

G06K 1500
G01R 1900

US Classification:

364514

Abstract:

An electric power monitor system for radio communication (trunking and paging repeater base station) systems includes a plurality of input switches, power sensors, a power monitor having a display, keyboard, and microprocessor, a printer port, and communications port. The input switches facilitate alarm inputs, for example, unauthorized entry, flooding, fire, and temperature of the antenna site. The power sensors include bidirectional and unidirectional sensors connected to a communication system having tunable components for producing analog signals indicative of system component performance. The power monitor measures, determines, and reports locally and/or remotely the power output and standing wave ratio of transmitters and antennas, insertion loss of combiners and power to and SWR of antennas and alarms. Specific measurements and computations are: (1) transmitter input power forward to the combiner; (2) reflected transmitter power on the input side of the combiner; (3) reflected power from the antenna side of the combiner; (4) transmitter voltage standing wave ratio; (5) combiner insertion loss (IL) per channel; (6) time and date of most recent channel measurement; (7) antenna voltage standing wave ratio; and (8) combiner power to the antenna. The display shows either single measurements or dual measurements of any selected pair of the foregoing measurements.

US Patent:

D3216934, Nov 19, 1991

Filed:

Mar 13, 1989

Appl. No.:

7/322228

Inventors:

Peter Mailandt - Dallas TX

Assignee:

Alliance Telecommunications Corp. - Dallas TX

US Classification:

D14234

US Patent:

61604607, Dec 12, 2000

Filed:

Apr 13, 1998

Appl. No.:

9/059489

Inventors:

John R. Hicks - Lone Oak TX
David W. Allen - Plano TX
Peter Mailandt - Dallas TX

Assignee:

Allen Telecom Inc. - Beachwood OH

International Classification:

H03J 502
H04B 304
H01P 1213
H01P 706
H01P 710

US Classification:

333 171

Abstract:

In one form of the invention, a resonant cavity filter (50) is disclosed, comprising an input port (210) for receiving an input signal, a dielectric resonator (204) in a cavity, the dielectric resonator operable to receive an input signal from the input port and further operable to produce an output signal at a resonant frequency of the cavity, an output port (212) operable to receive the output signal and a tuning plate (308) disposed in the cavity, the tuning plate coupled to a control means operable to cause movement of the tuning plate, thereby changing dimensions of the cavity, the control means operable to determine a frequency of the input signal, retrieve an expected tuning plate position from a memory (514) based on the frequency, and move the tuning plate to the expected position. Other systems, devices and methods are disclosed.