Seunghwan H Yoon

US Patent:

7557772, Jul 7, 2009

Filed:

Mar 21, 2006

Appl. No.:

11/386247

Inventors:

Franco De Flaviis - Irvine CA, US
Seunghwan Yoon - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01Q 1/36

US Classification:

343895, 343700 MS, 340 101

Abstract:

An antenna includes a substantially planer substrate and a helical winding. The substantially planer substrate includes a first surface and a second surface. The helical winding includes a first pattern, a second pattern, and a plurality of interconnections. The first pattern is affixed to the first surface and the second pattern is affixed to the second surface. Connection nodes of the first pattern are coupled to associated connection nodes of the second pattern by the plurality of interconnections.

US Patent:

7657243, Feb 2, 2010

Filed:

May 30, 2006

Appl. No.:

11/443777

Inventors:

Seunghwan Yoon - Irvine CA, US
Franco De Flaviis - Irvine CA, US
Ahmadreza (Reza) Rofougaran - Newport Coast CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/06
H04B 7/00

US Classification:

4552761, 455275, 343824

Abstract:

An RF transceiver front-end includes receiver and transmitter front-ends. The receiver front-end includes 1and 2antennas, a ninety degree phase shift module and an LNA module. The 1and 2antennas receive inbound RF signals and provide a first directional circular polarization. The ninety degree phase shift module phase shifts the RF signals received by the 2antenna. The LNA module amplifies the RF signals received by the 1antenna and the shifted RF signals. The transmitter front-end includes a PA module and 3and 4antennas, which provide a second directional circular polarization. The PA module amplifies outbound RF signals to produce amplified outbound RF signals and amplified orthogonal outbound RF signals. The 3antenna transmits the amplified outbound RF signals and the 4antenna transmits the amplified orthogonal outbound RF signals.

US Patent:

7750787, Jul 6, 2010

Filed:

Jun 22, 2006

Appl. No.:

11/473810

Inventors:

Seunghwan Yoon - Irvine CA, US
Jesus Alfonso Castaneda - Los Angeles CA, US
Franco De Flaviis - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01F 27/28

US Classification:

336223

Abstract:

An impedance transformer includes a first winding and a second winding. The first winding includes a first plurality of winding components, wherein each of the first plurality of winding components is on a corresponding layer of a first set of layers of a supporting substrate. The second winding includes a second plurality of winding components, wherein each of the second plurality of winding components is on a corresponding layer of a second set of layers of the supporting substrate and the first and second sets of layers are interleaved. The first winding has a first impedance within a desired frequency range and the second winding has a second impedance within the desired frequency range, where the first and second impedances are based on at least one of spacing, trace width, and trace length of the first and second plurality of winding components.

US Patent:

7973636, Jul 5, 2011

Filed:

May 28, 2010

Appl. No.:

12/789677

Inventors:

Seunghwan Yoon - Costa Mesa CA, US
Jesus Alfonso Castaneda - Los Angeles CA, US
Franco De Flaviis - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01F 27/28

US Classification:

336223, 336200, 336232

Abstract:

An impedance transformer includes a first winding and a second winding. The first winding includes a first plurality of winding components, wherein each of the first plurality of winding components is on a corresponding layer of a first set of layers of a supporting substrate. The second winding includes a second plurality of winding components, wherein each of the second plurality of winding components is on a corresponding layer of a second set of layers of the supporting substrate and the first and second sets of layers are interleaved. The first winding has a first impedance within a desired frequency range and the second winding has a second impedance within the desired frequency range, where the first and second impedances are based on at least one of spacing, trace width, and trace length of the first and second plurality of winding components.

US Patent:

8049676, Nov 1, 2011

Filed:

Nov 26, 2008

Appl. No.:

12/323829

Inventors:

Seunghwan Yoon - Irvine CA, US
Franco De Flaviis - Irvine CA, US
Ahmadreza (Reza) Rofougaran - Newport Coast CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01Q 1/36

US Classification:

343895, 343700 MS

Abstract:

A planer antenna structure includes a first planer antenna and a second planer antenna. The first planer antenna has a first axial orientation and a conductive antenna pattern on a first surface of a supporting substrate. The second planer antenna has a second axial orientation and the conductive antenna pattern on the first surface of the supporting substrate.

US Patent:

8306497, Nov 6, 2012

Filed:

Nov 17, 2009

Appl. No.:

12/620053

Inventors:

Seunghwan Yoon - Irvine CA, US
Franco De Flaviis - Irvine CA, US
Ahmadreza (Reza) Rofougaran - Newport Coast CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04B 1/06
H04B 7/00

US Classification:

455273, 455129, 343824

Abstract:

An RF transceiver front-end includes receiver and transmitter front-ends. The receiver front-end includes 1and 2antennas, a ninety degree phase shift module and an LNA module. The 1and 2antennas receive inbound RF signals and provide a first directional circular polarization. The ninety degree phase shift module phase shifts the RF signals received by the 2antenna. The LNA module amplifies the RF signals received by the 1antenna and the shifted RF signals. The transmitter front-end includes a PA module and 3and 4antennas, which provide a second directional circular polarization. The PA module amplifies outbound RF signals to produce amplified outbound RF signals and amplified orthogonal outbound RF signals. The 3antenna transmits the amplified outbound RF signals and the 4antenna transmits the amplified orthogonal outbound RF signals.

US Patent:

8570222, Oct 29, 2013

Filed:

Dec 18, 2009

Appl. No.:

12/642360

Inventors:

Nicolaos G. Alexopoulos - Irvine CA, US
Yunhong Liu - San Juan Capistrano CA, US
Seunghwan Yoon - Costa Mesa CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01Q 1/38
H01Q 9/28

US Classification:

343700MS, 343795

Abstract:

An antenna apparatus includes a substrate and an antenna structure. The antenna structure includes a metal trace and a terminal. The metal trace has a modified Polya curve shape that is confined in a polygonal shape. The terminal is coupled to the metal trace.

US Patent:

8570229, Oct 29, 2013

Filed:

Apr 30, 2010

Appl. No.:

12/772129

Inventors:

Seunghwan Yoon - Costa Mesa CA, US
Nicolaos G. Alexopoulos - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H01Q 1/38
H01Q 1/24
H01Q 21/24

US Classification:

343727, 343795, 343893

Abstract:

A multiple antenna apparatus includes a substrate, a first antenna structure, and a second antenna structure. The first antenna structure includes a first metal trace that has a first pattern confined in a first geometric shape and has a near-zero electric field plane. The second antenna structure includes a second metal trace that has a first pattern confined to a second geometric shape. The second antenna structure is positioned on the substrate in substantial alignment with the near-zero electric field plane of the first antenna structure.