Cheng Fong Tan from 5201 E Dakota Ave, Denver, CO 80246, age 51, Phone: (303)9554518

Name / Title

Company / Classification

Phones & Addresses

Cheng I. Tan
Branch Manager

City of Boston
Executive Office · Membership Organization · Regulation Misc Commercial Sector · Public Finance/Taxation/Monetary Policy · Trust Office · Urban/Community Development · Executive Offices, Nsk · State Credit Unions, Nsk

(617)6353911, (617)6353245, (617)6354170, (617)6353414

Cheng Tan
Principal

Tan Bonaventure
Misc Personal Services

309 Ln Salle Dr, Richardson, TX 75081

Resumes

Engineer At Qualcomm

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Location:

Greater Denver Area

Industry:

Telecommunications

Us Patents

System And Method For Reducing The Effects Of Clock Harmonic Frequencies
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US Patent:

6999723, Feb 14, 2006
Filed:

Nov 29, 2001
Appl. No.:

09/998458
Inventors:

Patrick Kusbel - Longmont CO, US
Cheng Tan - Boulder CO, US
Troy Curtiss - Erie CO, US
Assignee:

Kyocera Wireless Corp. - San Diego CA
International Classification:

H04B 1/10
H04B 15/00
US Classification:

455 631, 455296, 455310, 375346
Abstract:

A system and a method are provided for reducing the effects of spurious frequencies in a wireless communications device. The system comprises a processor having a reference frequency input and a clock having an output connected to the processor input. The clock supplies a clock frequency, or reference frequency, to the processor. The reference frequency is the frequency at which the processor operates. The clock also has an input for selecting a reference frequency to provide to the processor. The system also includes a transceiver having a plurality of selectable communications passbands. If the wireless communications device is a telephone, for example, the transceiver frequency (passband) may change as a function of the mode in which the phone is operating (AMPS, PCS, GSM, CDMA, or W-CDMA). In response to changing operating modes (transceiver passband), the clock frequency is adjusted. The clock frequency is selected so that harmonic frequencies associated with the clock frequency do not substantially interfere with the transceiver passband.

System And Method For Reducing The Effects Of Clock Harmonic Frequencies
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US Patent:

7103342, Sep 5, 2006
Filed:

Aug 17, 2005
Appl. No.:

11/205625
Inventors:

Patrick Kusbel - Longmont CO, US
Cheng Tan - Boulder CO, US
Troy Curtiss - Erie CO, US
Assignee:

Kyocera Wireless Corp. - San Diego CA
International Classification:

H04B 1/00
H04B 15/00
H04B 1/10
US Classification:

455296, 455 631, 4551832, 455310, 375346
Abstract:

A system and a method are provided for reducing the effects of spurious frequencies in a wireless communications device. The system comprises a processor having a reference frequency input and a clock having an output connected to the processor input. The clock supplies a clock frequency, or reference frequency, to the processor. The reference frequency is the frequency at which the processor operates. The clock also has an input for selecting a reference frequency to provide to the processor. The system also includes a transceiver having a plurality of selectable communications passbands. If the wireless communications device is a telephone, for example, the transceiver frequency (passband) may change as a function of the mode in which the phone is operating (AMPS, PCS, GSM, CDMA, or W-CDMA). In response to changing operating modes (transceiver passband), the clock frequency is adjusted. The clock frequency is selected so that harmonic frequencies associated with the clock frequency do not substantially interfere with the transceiver passband.

Forward Link Signaling Within A Wireless Power System
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US Patent:

8559873, Oct 15, 2013
Filed:

Oct 29, 2010
Appl. No.:

12/916352
Inventors:

William H Von Novak - San Diego CA, US
Stanley Slavko Toncich - San Diego CA, US
Cheng F Tan - Denver CO, US
Kevin D Lee - San Diego CA, US
Linda S Irish - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

H04B 5/00
H04B 1/02
H01F 27/42
H01F 37/00
H01F 38/00
US Classification:

455 411, 455108, 307104
Abstract:

Exemplary embodiments are directed to forward link signaling. A method may include modulating an input bias signal of a power amplifier according to data to be transmitted on a wireless power transmit signal. The method may further include modulating an amplitude of the wireless power transmit signal generated by the power amplifier in response to the modulated input bias signal.

Forward Link Signaling Within A Wireless Power System
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US Patent:

20140038522, Feb 6, 2014
Filed:

Oct 11, 2013
Appl. No.:

14/052498
Inventors:

Stanley Slavko Toncich - San Diego CA, US
Cheng F. Tan - Denver CO, US
Kevin Douglas Lee - San Diego CA, US
Linda Stacey Irish - San Diego CA, US
Assignee:

QUALCOMM Incorporated - San Diego CA
International Classification:

H04B 5/00
US Classification:

455 411
Abstract:

Exemplary embodiments are directed to forward link signaling. A method may include modulating an input bias signal of a power amplifier according to data to be transmitted on a wireless power transmit signal. The method may further include modulating an amplitude of the wireless power transmit signal generated by the power amplifier in response to the modulated input bias signal.

Transmit Diversity Power Leakage Detection And Filtering In Antenna Compensator Power Detector
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US Patent:

20230076071, Mar 9, 2023
Filed:

Sep 9, 2021
Appl. No.:

17/471095
Inventors:

- San Diego CA, US
Sean Vincent Maschue - Encinitas CA, US
Cheng Tan - Denver CO, US
Brian French - Boulder CO, US
International Classification:

H04B 1/525
H04B 1/12
H04B 17/10
Abstract:

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.

Low Cost Power Efficient Antenna Switch Diversity And Cyclic Delay Diversity Transceiver
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US Patent:

20210159956, May 27, 2021
Filed:

Nov 19, 2020
Appl. No.:

16/953173
Inventors:

- San Diego CA, US
Cheng Tan - Denver CO, US
In Hyuck Yeo - San Diego CA, US
Cheol Hee Park - San Diego CA, US
Jungsik Park - San Diego CA, US
International Classification:

H04B 7/06
Abstract:

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to operate in an antenna switch diversity mode to transmit an uplink signal according to an antenna switching pattern, the antenna switching pattern comprising switching between a first transmit chain coupled to a first antenna and a second transmit chain coupled to a second antenna. The UE may transmit at least a first portion of the uplink signal using the first transmit chain coupled to the first antenna, the first transmit chain coupled to the first antenna. The UE may transmit at least a second portion of the uplink signal using the second transmit chain coupled to the second antenna, the second transmit chain coupled to the second antenna.

Cellular Vehicle-To-Everything Out Of Coverage Synchronization
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US Patent:

20200120625, Apr 16, 2020
Filed:

Oct 8, 2019
Appl. No.:

16/596619
Inventors:

- San Diego CA, US
Feng LU - Santa Clara CA, US
Arvind Vardarajan SANTHANAM - San Diego CA, US
Subramanya RAO - Sunnyvale CA, US
Sivaramakrishna VEEREPALLI - San Diego CA, US
Cheng TAN - Denver CO, US
Sean Vincent MASCHUE - Encinitas CA, US
Ashish Shankar IYER - San Diego CA, US
Giridhar RAMAKRISHNAN - San Diego CA, US
Yax PATEL - San Diego CA, US
Srinivasan RAJAGOPALAN - San Diego CA, US
International Classification:

H04W 56/00
H04W 4/40
Abstract:

Aspects directed towards synchronizing out of coverage (OOC) vehicle-to-everything (V2X) communications are disclosed. In one example, a scheduled entity detects a loss of a synchronization signal associated with a V2X communication by detecting when a timing uncertainty value or error value is greater than a threshold value. Packet timing information is then received in response to the loss of the synchronization signal from at least one user equipment (UE) synchronized with the synchronization signal. The scheduled entity then maintains the V2X communication by performing a timing adjustment based on the packet timing information.

System And Method For Vehicle-To-Everything (V2X) Communication
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US Patent:

20200037128, Jan 30, 2020
Filed:

Jul 18, 2019
Appl. No.:

16/515899
Inventors:

- San Diego CA, US
Cheol Hee PARK - San Diego CA, US
Cheng TAN - Denver CO, US
Edmund Victor SIMMONS - Boulder CO, US
Sean Vincent MASCHUE - Encinitas CA, US
Sivaramakrishna VEEREPALLI - San Diego CA, US
Arvind Vardarajan SANTHANAM - San Diego CA, US
Subramanya RAO - Sunnyvale CA, US
International Classification:

H04W 4/40
H04L 27/26
H04B 7/06
H04W 72/12
H04L 1/18
Abstract:

This disclosure discloses various vehicle-to-everything (V2X) wireless communication processes that use switching diversity to improve coverage over that of a single transmit antenna. Switching diversity may be implemented by alternating the transmit antennas according to a certain switching pattern. A V2X device determines a pattern for alternating a plurality of antennas for transmitting data packets. The V2X device selects, based on the pattern, a first antenna of the plurality of antennas, and transmit a first packet of the data packets using the first antenna. The V2X device further select, based on the pattern, a second antenna of the plurality of antennas, and transmit a second packet of the data packets using the second antenna.