Om Prakash Gupta

US Patent:

7496329, Feb 24, 2009

Filed:

May 17, 2004

Appl. No.:

10/716147

Inventors:

Jay Patel - Columbia MD, US
Om Gupta - Dayton MD, US
Shuguan Chen - Ellicott City MD, US
James S. Finn - Washington DC, US

Assignee:

Paratek Microwave, Inc. - Columbia MD

International Classification:

H04B 5/00
H04Q 5/22

US Classification:

455 412, 340 1052

Abstract:

An RF ID tag system and method that utilizes an RF ID tag and an RF ID tag reader which incorporates a dynamically reconfigurable wireless antenna and/or an array antenna and/or a switched polarization antenna. The dynamically reconfigurable wireless antenna embodiment comprises at least one multi-layered RF module, said at least one RF module further comprising at least one RF connector for receipt of at least one RF signal and at least one layer of tunable dielectric material and one layer of metal fabricated into said RF module; an RF motherboard for acceptance of RF signals and distribution of the transmit energy to said RF module at the appropriate phases to generate a beam in the commanded direction and width; and a controller for determining the correct voltage signal to send to said at least one multi-layered RF module.

US Patent:

8204438, Jun 19, 2012

Filed:

Nov 17, 2008

Appl. No.:

12/313128

Inventors:

Jay Patel - Columbia MD, US
Om Gupta - Dayton MD, US
Shuguang Chen - Ellicott City MD, US
James S. Finn - Washington DC, US

Assignee:

Paratek Microwave, Inc. - Nashua NH

International Classification:

H04B 7/00
G08B 13/14

US Classification:

455 412, 3405727, 340 101

Abstract:

An embodiment of the present invention provides an RF ID card reader, comprising RF ID circuitry to generate an RF ID signal, a transceiver in communication with said RF ID circuitry and an array antenna associated with said transceiver for scanning an area for at least one tag and establishing communication with at least one tag.

US Patent:

20040185795, Sep 23, 2004

Filed:

Dec 30, 2003

Appl. No.:

10/748709

Inventors:

Khosro Shamsaifar - Ellicott City MD, US
Om Gupta - Dayton MD, US

International Classification:

H04B001/46
H04B001/44

US Classification:

455/083000, 455/552100, 455/082000

Abstract:

An electronically tunable RF Front End Module, comprising a first tunable bandpass filter, said first tunable bandpass filter capable of being tuned to receive a plurality of distinct frequency bands, a first lowpass filter capable of transmitting predetermined frequency bands, a first switch in communication with said first lowpass filter and said first tunable bandpass filter for switching between said first tunable bandpass filter and said first low pass filter to enable switching between transmitting and reception of RF signals, a second tunable bandpass filter, said second tunable bandpass filter capable of being tuned to receive a plurality of distinct frequency bands, a second lowpass filter capable of transmitting predetermined frequency bands, a second switch in communication with said second lowpass filter and said second tunable bandpass filter for switching between said second tunable bandpass filter and said second low pass filter to enable switching between transmitting and reception of RF signals, and an antenna in communication with a third switch, said third switch enabling switching between said first and said second switch. More specifically, first tunable bandpass filter that is capable of being tuned to receive a plurality of distinct frequency bands can be tuned to receive frequencies in the DCS and PCS bands. Also, the first lowpass filter capable of transmitting predetermined frequency bands, can transmit signals in the DCS and PCS frequency bands; and the second tunable bandpass filter is capable of being tuned to receive frequencies in the GSM 800 and GSM 900 bands.

US Patent:

20050113138, May 26, 2005

Filed:

Jun 1, 2004

Appl. No.:

10/858016

Inventors:

Greg Mendolia - Hollis NH, US
Om Gupta - Dayton MD, US
Cornelis du Toit - Ellicott City MD, US

International Classification:

H04M001/00
H04B001/38
G08B013/14

US Classification:

455558000

Abstract:

An RF ID card reader, comprising, RF ID circuitry to generate an RF ID signal, a transceiver in communication with the RF ID circuitry, and an antenna associated with the transceiver for scanning an area for at least one tag and establishing communication with the at least one tag, the antenna capable of creating a plurality of field focuses. Further, the RF ID card reader of the present invention may provide that the plurality of field focuses may be a near field focus and a far field focuse. Also, the field focuses may be created by a scanning antenna array. An embodiment of the present invention may also include at least one conducting curtain associated with the card reader, wherein the at least one conducting curtain may be capable of enhancing reception of the RF signals by reflecting RF signals in the area. An embodiment may also provide for at least one element and at least one phase shifter in the scanning antenna array be capable of being used as a multiple input and multiple output (MIMO) system to maximize information extracted from the RF signals.

US Patent:

61605859, Dec 12, 2000

Filed:

Dec 15, 1997

Appl. No.:

8/990394

Inventors:

William George Schmidt - Sun Lakes AZ
Om Prakash Gupta - Phoenix AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04N 718

US Classification:

348423

Abstract:

A transmitting unit (10) transmits a video digital signal. The transmitting unit (10) is the delivery system associated with a source that can provide digital video signals, including but not necessarily limited to a satellite television system, a local television station or a cable television provider. A receiving unit (100) receives the broadcasted signal and demultiplexes the signal into a multicasting segment (52) and a baseline video bitstream (54). A portion of the multicasting segment (52) is stored in memory until such time that it is displayed on a television monitor (110). The baseline video bitstream (54) usually comprises a television show which is displayed on the television monitor (110) unless the multicasting segment (52) (e. g. , commercial) is being displayed.