Malcolm C Smith

US Patent:

8258875, Sep 4, 2012

Filed:

Sep 29, 2010

Appl. No.:

12/893193

Inventors:

Malcolm Smith - San Jose CA, US
Matthew Anthony Mow - Cupertino CA, US

Assignee:

Amalfi Semiconductor, Inc. - Los Gatos CA

International Classification:

H03F 3/04

US Classification:

330297, 330127, 330129, 330136, 330296

Abstract:

A power amplifier system is provided that includes a power amplifier configured to receive an RF input. A DC-DC converter is coupled to the power amplifier. Clocking circuits drive the DC-DC converter. The clocking circuits use the RF input to generate a clock. The clock acts with the DC-DC converter to provide an output voltage used in the power amplifier.

US Patent:

8274336, Sep 25, 2012

Filed:

Sep 29, 2010

Appl. No.:

12/893201

Inventors:

Malcolm Smith - San Jose CA, US
Chu Shiung Ho - Milpitas CA, US
Caesar See-Hoi Wang - Fremont CA, US
Baker Scott - San Jose CA, US

Assignee:

Amalfi Semiconductor, Inc. - Los Gatos CA

International Classification:

H03F 3/04
H03G 3/20

US Classification:

330311, 330136

Abstract:

A saturated power amplifier system has a saturated power amplifier that receives an input signal. The saturated power amplifier has one or more stages, including one or more output stages. Each output stage produces multiple signals which are combined. Each output stage has one or more levels of cascoding including one or more thick oxide devices and one or more thin oxide devices.

US Patent:

20120139645, Jun 7, 2012

Filed:

Dec 2, 2011

Appl. No.:

13/310593

Inventors:

Daniel Ho - Palo Alto CA, US
Malcolm Smith - San Jose CA, US

Assignee:

AMALFI SEMICONDUCTOR, INC. - Los Gatos CA

International Classification:

H03F 3/16

US Classification:

330307

Abstract:

The apparatus and method thereof accurately sense and convert a radio frequency (RF) current signal to direct current (DC) independent of process variation and temperature, and without requiring high speed, high voltage amplifiers for its operation. The apparatus comprises an AC coupled circuit that couples the RF signal from the main device to a sense device with an N:M ratio, a low pass filter system that extracts the DC content of the RF current signal, and a negative feedback loop that forces the DC content of the main device and the sensed device to be equal. Exemplary embodiments include a current sensor that provides feedback to protect an RF power amplifier from over-current condition, and a RF power detection and control in a RF power amplifier (PA) that multiplies the sensed output current by the sensed output voltage to be used as a feedback to control the PA's bias.

US Patent:

20120196594, Aug 2, 2012

Filed:

Jan 28, 2011

Appl. No.:

13/016920

Inventors:

Rajesh Pazhyannur - Sunnyvale CA, US
Mark Grayson - Berkshire, GB
Daniel Wee - Garland TX, US
Santhalingam Balasekar - Plano TX, US
Hang Jin - Plano TX, US
Malcolm Smith - Richardson TX, US

Assignee:

CISCO TECHNOLOGY, INC. - San Jose CA

International Classification:

H04W 60/00
H04W 4/06
H04W 36/00

US Classification:

4554351

Abstract:

A method and apparatus are provided for managing radio access point (RAP) devices and enterprise controller devices in a wireless communication network. An enterprise controller device registers with a gateway device, and the enterprise controller device receives a registration request from multiple RAP devices that are serviced by the enterprise controller device. As the RAP devices register with the enterprise controller device, the enterprise controller device generates a list of the RAP devices registered with the enterprise controller. As the enterprise controller receives additional registration requests from additional RAP devices, the enterprise controller updates the list. The enterprise controller sends the list to the gateway device with which it registers so that the gateway device is aware of RAP devices serviced by the enterprise controller device. In this way, aggregated messages may be sent from the gateway device to the enterprise controller.

US Patent:

20140009208, Jan 9, 2014

Filed:

Jul 9, 2012

Appl. No.:

13/544541

Inventors:

Malcolm Smith - San Jose CA, US

Assignee:

AMALFI SEMICONDUCTOR, INC. - Los Gatos CA

International Classification:

H03K 17/16

US Classification:

327391

Abstract:

Transmit modules typically constitute passive matching circuitry, harmonic trap filters and an antenna switch to provide isolation between the transmit bands as well as between transmit and receive functions. In complementary metal-oxide semiconductor (CMOS) processes the switch function is difficult to implement as a large voltage swing may result in breakdown of the MOS oxide, drain diode, source diode as well as substrate diodes. Therefore a switching function is provided at a node that has low impedance during transmit that limits the voltage swing that the MOS switches experience. The approach is particularly useful, but not limited to, half duplex transmissions such as those used in global system for mobile (GSM) communication, enhanced data for GSM Evolution (EDGE), and time division synchronous code division multiple access (TDSCDMA).

US Patent:

D4405420, Apr 17, 2001

Filed:

Nov 4, 1996

Appl. No.:

D/061939

Inventors:

Jeffrey C. Hawkins - Redwood City CA
Robert Yuji Haitani - San Jose CA
Malcolm Sloan Smith - Palo Alto CA
Gisela Schmoll - San Francisco CA

Assignee:

Palm Computing, Inc. - Mountain View CA

International Classification:

1402

US Classification:

D14100

US Patent:

61898422, Feb 20, 2001

Filed:

Jun 21, 1999

Appl. No.:

9/336918

Inventors:

Kathleen A. Bergeron Gull - San Jose CA
Gregory Allen Springer - Sunnyvale CA
Malcolm Sloan Smith - Palo Alto CA

Assignee:

Palo Alto Design Group - Palo Alto CA

International Classification:

A47F 500

US Classification:

2481251

Abstract:

Tilt and swivel adjustment of a flat panel display including detents for landscape and portrait positions and a kickout feature for preventing contact between the flat panel display and its base. A stand for the display includes a neck member coupled to the base member and a riser member which is slidable with respect to the neck member. The display is mounted to an upper portion of the riser member via a swivel apparatus which allows a user to pivot the display between landscape and portrait orientations. The swivel apparatus includes a cam and corresponding ramp. When the display is pivoted between the portrait and landscape orientations, the cam and ramp cause the display to be tilted with respect to the stand such that a lower portion of the display is tilted away from the base member, thereby preventing contact therebetween. The swivel apparatus includes a bearing member which is mounted between the display and a portion of the swivel apparatus which is pivotable with respect to the display. The bearing member includes a bearing surface providing a wear-resistant and smooth frictional pivot coupling.

US Patent:

D3459683, Apr 12, 1994

Filed:

Apr 3, 1992

Appl. No.:

7/862285

Inventors:

Richard H. Bruce - Los Altos CA
Scott A. Elrod - Redwood City CA
Thomas P. Moran - Palo Alto CA
Frank G. Halasz - Santa Cruz CA
Malcolm S. Smith - Palo Alto CA
Dallas R. Grove - Mountain View CA
Richard J. Goldstein - San Francisco CA

Assignee:

Xerox Corporation - Stamford CT

US Classification:

D14113