Li Yi Lin

US Patent:

7126428, Oct 24, 2006

Filed:

Apr 5, 2005

Appl. No.:

11/100143

Inventors:

Li Lin - Saratoga CA, US
Arya Reza Behzad - Poway CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H03F 3/04

US Classification:

330311, 330261, 330278

Abstract:

A multi-stage, variable gain amplifier whose linearity is relatively insensitive to variations in gain control is disclosed. The amplifier includes a primary cascoded pair of transistors for producing a primary output current from an input voltage as a function of a primary cascode control voltage. The amplifier further includes one or more secondary cascoded pairs of transistors coupled to the primary cascoded pair of transistors for producing one or more secondary output currents from the input voltage as a function of one or more secondary cascode control voltages. The output current of the RF circuit is a sum of the primary output current and the one or more secondary output currents.

US Patent:

8564471, Oct 22, 2013

Filed:

Dec 21, 2011

Appl. No.:

13/333058

Inventors:

Xiang Gao - San Jose CA, US
Chih-Wei Yao - Milpitas CA, US
Chi-Hung Lin - Fremont CA, US
Li Lin - Saratoga CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H03M 1/50

US Classification:

341166, 341155

Abstract:

Disclosed is a time-to-digital (TDC) converter comprising an analog voltage source. An analog-to-digital converter quantizes two voltage samples in response to receiving a first input signal at a first time tand a second input signal at a second time t. The first and second digital signals are combined to produce a digital signal that represents the difference (t−t).

US Patent:

8570887, Oct 29, 2013

Filed:

Nov 11, 2010

Appl. No.:

12/944031

Inventors:

Thomas B. Cho - Fremont CA, US
Li Lin - Saratoga CA, US
Mao Yu - San Jose CA, US
Atul Salhotra - Sunnyvale CA, US

Assignee:

Marvell World Trade Ltd. - St. Michael

International Classification:

G01R 31/08

US Classification:

370252, 455208

Abstract:

Apparatus having corresponding methods and non-transitory computer-readable media comprise an amplifier configured to amplify signals according to a bias current, wherein the signals represent packets of data; a packet module configured to recover the packets of data from the signals amplified by the amplifier; and a control module configured to control the bias current according to one or more characteristics of the packets of data.

US Patent:

8571497, Oct 29, 2013

Filed:

Nov 16, 2011

Appl. No.:

13/297420

Inventors:

Li Lin - Saratoga CA, US
Arnab Kumar Mitra - Sunnyvale CA, US
Harish Ramamurthy - Sunnyvale CA, US
Sergey Timofeev - Santa Clara CA, US
Lance Nagamine - Fremont CA, US
Brian Bosso - Santa Clara CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H01Q 11/12
H04B 1/04

US Classification:

4551272, 455118, 455126

Abstract:

A radio frequency transmitting system includes a programmable amplifier, a power amplifier, a power detector, and a calibration module. The programmable amplifier is configured to amplify an input signal to generate an amplified signal. The power amplifier is configured to output a transmit signal in response to the amplified signal. The transmit signal has a transmit power. The power detector is configured to generate a power measurement in response to the transmit power. The calibration module is configured to implement a plurality of feedback loops to adjust a gain of the programmable amplifier in response to a difference between the power measurement and a desired transmit power. The calibration module is configured to select one of the plurality of feedback loops in response to the desired transmit power.

US Patent:

8624673, Jan 7, 2014

Filed:

Jan 11, 2012

Appl. No.:

13/348397

Inventors:

Jinho Park - San Jose CA, US
Yuan Lu - Sunnyvale CA, US
Li Lin - Saratoga CA, US

Assignee:

Marvell World Trade Ltd. - Hamilton

International Classification:

H03F 3/26

US Classification:

330267, 330264

Abstract:

The present disclosure describes self-biasing radio frequency circuitry. In some aspects a radio frequency (RF) signal is amplified via a circuit having a first transistor configured to source current to an output of the circuit and a second transistor configured to sink current from the output of the circuit, and another signal is provided, without active circuitry, from the output of the circuit to a gate of the first transistor effective to bias a voltage at the output of the circuit. By so doing, the output of the circuit can be biased without active circuitry which can reduce design complexity of and substrate area consumed by the circuit.

US Patent:

8638168, Jan 28, 2014

Filed:

Jun 7, 2012

Appl. No.:

13/490901

Inventors:

David M. Signoff - Mountain View CA, US
Li Lin - Saratoga CA, US
Renaldi Winoto - Danville CA, US
Wayne A. Loeb - San Francisco CA, US
Shu-Hsien Liao - Sunnyvale CA, US
Ming He - Fremont CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H03F 3/68

US Classification:

330124R, 330295

Abstract:

Systems and methods for power amplification using multiple digital amplifiers are provided. A power amplifier includes a first digital amplifier configured to process a digital input signal to generate a first analog output signal. The first analog output signal is configured to have a magnitude corresponding to amplitude information of the digital input signal. The power amplifier further includes a second digital amplifier configured to process an adjusted digital input signal to generate a second analog output signal. The second analog output signal is configured to have a magnitude corresponding to amplitude information of the adjusted digital input signal. An adjustment module configured to adjust amplitude information and phase information of the digital input signal generates the adjusted digital input signal. The digital input signal is adjusted to control a relationship between the first analog output signal and the second analog output signal.

US Patent:

7362192, Apr 22, 2008

Filed:

Nov 18, 2005

Appl. No.:

11/282342

Inventors:

Li Lin - Saratoga CA, US
Thomas B. Cho - Fremont CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H03B 5/12

US Classification:

331117FE, 331117 R, 331 36 C, 331177 V

Abstract:

Oscillator circuits for reducing phase noise are described in this disclosure. In one embodiment, an oscillator circuit includes a pair of cross-coupled transistors, including a first transistor and a second transistor, a first inductor in communication with a control terminal of the first transistor and an output terminal of the second transistor, a second inductor in communication with a control terminal of the second transistor and an output terminal of the first transistor, and a tank circuit in communication with the first inductor and the second inductor, where the tank circuit comprises a tank inductor and a variable capacitor.

US Patent:

20110285475, Nov 24, 2011

Filed:

May 13, 2011

Appl. No.:

13/107729

Inventors:

Yuan Lu - Sunnyvale CA, US
Renaldi Winoto - Danville CA, US
Jinho Park - San Jose CA, US
Li Lin - Saratoga CA, US
Xinhua Chen - Santa Clara CA, US
Ming He - Fremont CA, US
David Signoff - Mountain View CA, US
Wayne Loeb - San Francisco CA, US

International Classification:

H01P 1/15

US Classification:

333104

Abstract:

Disclosed is a transmit/receive circuit arrangement wherein a transceiver circuit including a transmit/receive switch is fabricated on an integrated circuit chip. A matching network is wholly disposed off-chip relative to the integrated circuit chip. In embodiments, at least a portion of the matching network is formed off-chip and a portion of the matching network is formed on-chip.