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Jajoo
Abhishek Jajoo, Pittsburgh, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20090233568 | HIGH-LINEARITY RECEIVER WITH TRANSMIT LEAKAGE CANCELLATION - Techniques for performing transmit (TX) leakage cancellation are described. A receiver includes a low noise amplifier (LNA) and a TX leakage canceller. The LNA amplifies a receiver input signal and provides an amplified signal. The TX leakage canceller includes a downconverter, a notch filter, and an upconverter. The downconverter downconverts a canceller input signal (e.g., obtained from the LNA output) with a first LO signal at a transmit frequency and provides a downconverted signal. The notch filter filters the downconverted signal to pass an undesired signal (e.g., a TX leakage signal) and attenuate a jammer and a desired signal in the canceller input signal. The upconverter upconverts the filtered signal with a second LO signal at the transmit frequency and provides a feedback signal. The feedback signal is subtracted at the input or output of the LNA to cancel the undesired signal. | 09-17-2009 |
| 20090256601 | PHASE TO DIGITAL CONVERTER IN ALL DIGITAL PHASE LOCKED LOOP - A phase to digital converter, all digital phase locked loop, and apparatus having an all digital phase locked loop are described herein. The phase to digital converter includes a phase to frequency converter driving a time to digital converter. The time to digital converter determines a magnitude and sign of the phase differences output by the phase to frequency converter. The time to digital converter utilizes tapped delay lines and looped feedback counters to enable measurement of small timing differences typical of a loop tracking process and large timing differences typical of an loop acquisition process. The tapped delay lines permit the measurement of fractions of a reference period and enable lower power operation of the phase to digital converter by reducing requirements on the speed of the reference clock. | 10-15-2009 |
Hemant Kumar Jajoo, Uttar Pradesh IN
| Patent application number | Description | Published |
|---|---|---|
| 20080293682 | Novel Betulinic Acid Derivatives - The invention relates to novel betulinic acid derivatives of formula (I), wherein R is C(═CH | 11-27-2008 |
Pramod Jajoo, Bangalore IN
| Patent application number | Description | Published |
|---|---|---|
| 20080269978 | Method and apparatus for vehicle performance tracking - Method and apparatus for vehicle performance tracking is described. In one example, a wireless interface is configured to receive operation data generated by a plurality of sensors in a vehicle. A time stamping module is configured to track time-of-day. A location module is configured to locate the vehicle. An engine tracking client is configured to produce instance performance data that relates the operation data, time-of-day information from the time stamping module, and location information from the location module. A cellular transceiver is configured to transmit the instance performance data to a server via a wireless mobile network. | 10-30-2008 |
Vishnu Jajoo, Ujjain IN
| Patent application number | Description | Published |
|---|---|---|
| 20100313527 | Child-resistant Cap - A child resistant cap assembly for a bottle is disclosed comprising an inner cap and outer cap. When an external pressure is applied to the outer cap, the teeth on the outer cap engage with the inner cap. While engaged, the cap assembly is rotated in a counter clockwise direction to unfasten or unscrew the cap assembly from the bottle. | 12-16-2010 |