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Jerng
Albert Jerng, Los Gatos, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100248669 | DUAL-BAND TRANSCEIVER - A dual-band transceiver is disclosed. In one embodiment, the system includes a first mixer circuit that generates a first signal having a first frequency that is within a first predefined frequency range. The system also includes a second mixer circuit that generates a second signal having one of a second frequency that is within a second predefined frequency range and a third frequency that is within a third predefined frequency range, and wherein each of the first mixer circuit and the second mixer circuit are used for at least two frequency bands. | 09-30-2010 |
| 20110007848 | METHOD FOR CALIBRATING IQ MATCHING OF RECEIVER - A method and system for calibrating the mismatch between I data and Q data of a receiver is disclosed. The receiver includes an amplifier, first and second mixers coupled to the amplifier, an oscillator for driving the first and second mixers; and first and second filters coupled to the first and second mixers. The method comprises turning off the amplifier; and injecting a signal into the first and second mixers. The method also requires measuring the amplitude and phase information of the I and Q data from the first and second mixers based upon the injected signal to provide mismatch information and utilizing the mismatch information to compensate the I data and the Q data during normal operating mode. In a method and system in accordance with an embodiment, the IQ mismatch of a receiver can be measured and compensated. This allows direct-conversion architecture, which is known to have IQ mismatch problem, to be used. Furthermore, if this calibration method is applied to other receiver architectures, the yield loss due to IQ mismatch can be minimized. | 01-13-2011 |
Albert Chia-Wen Jerng, Los Gatos, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110143690 | METHOD AND SYSTEM FOR INTEGRATING TRANSMIT SWITCH FUNCTIONALITY IN A WLAN RADIO TRANSCEIVER - A radio transceiver is disclosed. The transceiver comprises an integrated circuit. The integrated circuit comprises a transmit path; a first switch coupled in series with the output of the transmit path; a receive path; and a second switch coupled as a shunt with the input of the receive path. The transceiver further comprises a plurality of external matching networks coupled to the transmit and receive paths of the integrated circuit to ensure minimal loading from one path to the other. The transceiver also comprises a shared balun for converting differential signals from the plurality of external matching networks to single ended signals; and an antenna to interface with the single ended signals. A method and system in accordance with an embodiment enables tying together the transmit path and the receive paths of a radio transceiver without the need for an external T/R switch. A method and system in accordance with an embodiment minimizes the loading effects between the transmit path and the receive path such that output power and NF noise figure are not degraded after tying the transmit path and the receive path together. | 06-16-2011 |
Dong-Wook Jerng, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100281954 | TEST APPARATUS AND METHOD FOR SAFETY VALVE - An apparatus and method for testing the performance of a safety valve. The apparatus includes an accumulator including at least one electric heater for heating a predetermined amount of water in the accumulator, and storing steam produced by the electric heater, a test vessel storing the steam supplied from the accumulator, and providing steam at a test pressure to a safety valve, the steam being supplied after controlling flow rate and pressure, a condensing tank storing demineralized water to be supplied to the accumulator, and condensing and collecting the steam discharged from the safety valve, and a water-supply pump supplying the water stored in the condensing tank to the accumulator. | 11-11-2010 |
Yih Ming Jerng, Taipei TW
| Patent application number | Description | Published |
|---|---|---|
| 20110017244 | DRY CLEANING AND SURFACE TREATMENT EQUIPMENT USED FOR BIOCHIP OR MEDICAL APPARATUS - A dry cleaning and surface treatment equipment used for a biochip or a medical tools includes a sealable chamber provided for putting a biochip, an ozone generator for supplying ozone to the sealable chamber, and a fluid transmission device filled with a chemical reactant. The sealable chamber includes a heater, a gas outlet, and a gas inlet interconnected with the ozone generator. The fluid transmission device is disposed outside the sealable chamber and includes a trace transmission pipe extended to the fluid transmission device. The sealable chamber further includes an evaporation container, and the trace transmission pipe of the fluid transmission device is extended to a corresponding position of the evaporation container for injecting the chemical reactant into the evaporation container. | 01-27-2011 |