Reza Azadegan

US Patent:

20050231434, Oct 20, 2005

Filed:

May 1, 2002

Appl. No.:

10/511858

Inventors:

Reza Azadegan - Ann Arbor MI, US
Kamal Sarabandi - Ann Arbor MI, US

Assignee:

The Regents of the University of Michigan - Ann Arbor MI

International Classification:

H01Q013/10

US Classification:

343767000, 343795000

Abstract:

The present invention disclosed design aspects and the measured results of a miniaturized resonant narrow slot antenna. The resonant narrow slot radiating elements have a planar geometry and are capable of transmitting vertical polarization when placed nearly horizontal. A resonant narrow slot antenna according to the present invention simplifies impedance matching. Slot dipoles can be excited by a microstrip line and can be matched to arbitrary line impedances by moving the feed point along the slot. Antenna miniaturization can be achieved by using a high permittivity or permeability substrate and superstrate materials and/or using an appropriate antenna topology. Miniaturization is achieved through providing a unique geometry for a resonant narrow slot antenna. A very efficient radiating element is provided. With the virtual enforcement of the required boundary condition at the end of a slot antenna, the area occupied by the resonant antenna can be reduced. To achieve the required virtual boundary conditions, the two short-circuit at the end of resonant slot are replaced by some reactive boundary conditions, including inductive or capacitive boundary conditions, including inductive or capacitive loadings.

US Patent:

20190237860, Aug 1, 2019

Filed:

Jan 29, 2019

Appl. No.:

16/261356

Inventors:

- Chesterfield MO, US
Ayman DUZDAR - Holly MI, US
Reza AZADEGAN - Troy MI, US
Curtis W. BEAULIEU - Fenton MI, US
Hasan YASIN - Grand Blanc MI, US
Thomas W. HOWAY - Metamora MI, US

International Classification:

H01Q 1/32
H01Q 5/50
H01Q 15/14
H01Q 21/06

Abstract:

According to various aspects, disclosed are exemplary embodiments of vehicular antenna assemblies. In an exemplary embodiment, a vehicular antenna assembly generally includes a first satellite antenna configured to be operable for receiving first satellite signals, and a second satellite antenna configured to be operable for receiving second satellite signals different than the first satellite signals received by the first satellite antenna. A reflector is positioned generally between the first and second satellite antennas. The reflector is configured to be operable for reflecting the first satellite signals generally towards the first satellite antenna.