Hossein The H Zarei

US Patent:

8264392, Sep 11, 2012

Filed:

Dec 8, 2010

Appl. No.:

12/963347

Inventors:

Hossein Zarei - Irvine CA, US
Chieh-Yu Hsieh - Irvine CA, US

Assignee:

Marvell International Ltd.

International Classification:

H03M 1/12

US Classification:

341156, 341155, 341159

Abstract:

An analog-to-digital converter (ADC) and a receiver that includes the ADC is disclosed. The ADC includes a first filter configured to receive a signal in an I-signal path of the receiver and a second filter configured to receive a signal in a Q-signal path of the receiver. The ADC further includes a quantizer alternatingly in connection with the first and second filters, and at least one DAC alternatingly in connection with the first and second filters. Switches in the ADC are configured to alternate connection between an input of the quantizer and outputs of the first and second filters, and are also configured to alternate connection between an output of the at least one DAC and inputs of the first and second filters.

US Patent:

20090279642, Nov 12, 2009

Filed:

May 9, 2008

Appl. No.:

12/118108

Inventors:

Hossein Zarei - Irvine CA, US

International Classification:

H04L 27/22
H03H 11/16
H03L 7/06

US Classification:

375327, 327255, 327156

Abstract:

An integrated receiver circuit includes aphase locked loop circuit () with a voltage controlled oscillator (VCO) () and a quadrature generator circuit () which uses hybrid-branch line coupler circuits () coupled to buffered VCO outputs, where the hybrid-branch line coupler circuits () are tuned by same control voltage (a) that controls the VCO (). By replicating the VCO core circuitry in each hybrid-branch line coupler circuit () under common control of a control voltage, calibrated quadrature signals are generated that have the same frequency as the phase locked loop circuit ().

US Patent:

20130259158, Oct 3, 2013

Filed:

Apr 2, 2013

Appl. No.:

13/855646

Inventors:

- St. Michael, BB
Hossein ZAREI - Irvine CA, US

International Classification:

H04L 25/03

US Classification:

375296

Abstract:

A transmitter includes: a digital modulator configured to modulate a base-band signal in a digital domain into a modulated signal; a synchronization module configured to synchronize the modulated signal with a clock signal; and an analog output stage configured to convert the modulated signal into an analog signal for transmission.