Abstract: Disclosed is a multi-reference correlated double sampling detection method including generating, by a plurality of unit reference cells, reference signals, receiving, by a plurality of unit active cells having absorbed an infrared signal, sensing signals, and detecting a pure infrared signal on a basis of the sensing signals and active cell values processed using the reference signals, wherein the unit reference cells do not react to the infrared signal and are configured of blind cells having identical electrical and thermal characteristics to the unit active cells. Accordingly, a self-heating effect of an active cell may be accurately cancelled out, the method is robust to common noise such as power supply noise, and fixed pattern noise occurring in a sensing circuit and including incoherence between skimming cells may be removed. Furthermore, the method may improve efficiency and greatly reduce complexity of analog and digital correction, and remove a thermo-electro cooler and shutter.

Abstract: An infrared detector may be provided that includes: a micro-bolometer active cell which detects infrared and outputs a current signal; and a reference cell which includes a plurality of connected warm cells having the same structure and electrical characteristics as those of the micro-bolometer active cell, has the same electrical resistance value and average self-heating amount as those of the micro-bolometer active cell, and generates a reference current signal for the micro-bolometer active cell.

Abstract: An infrared detector may be provided that includes: a micro-bolometer active cell which detects infrared and outputs a current signal; and a reference cell which includes a plurality of connected warm cells having the same structure and electrical characteristics as those of the micro-bolometer active cell, has the same electrical resistance value and average self-heating amount as those of the micro-bolometer active cell, and generates a reference current signal for the micro-bolometer active cell.

Abstract: Provided are a method of manufacturing a flexible device and a flexible device manufactured thereby. The method of manufacturing a flexible device according to the present disclosure includes: fabricating a device on an upper silicon layer of a silicon-on-insulator (SOI) substrate comprising a lower silicon layer, an insulation layer and the upper silicon layer stacked sequentially; adhering a second silicon substrate to the upper silicon layer; removing the lower silicon layer; transferring the upper silicon layer with the device fabricated to a flexible substrate using the second silicon substrate; and stacking a passivation layer on the flexible substrate, wherein the device is located at a position of a neutral mechanical plane of the entire device as the passivation layer is stacked.

Abstract: The present invention relates to a differential amplifier and a mixer for improving the linearity. The differential amplifier circuit according to this present invention, includes first and second load stages each having a predetermined voltage value, a main differential amplifier unit having a first differential stage that forms a differential pair in such a way as to amplify a difference between a first input voltage and a second input voltage, and a constant current source, which has a predetermined current driving capability and is connected serially between a power source voltage terminal and a ground terminal, and a auxiliary differential amplifier unit having a second differential stage that forms a differential pair in such a way as to amplify a difference between a third input voltage and a fourth input voltage connected between the first load stage and a second load stage, and the ground, respectively.

Abstract: The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

Abstract: The present invention relates to a filter, and more particularly, to a tracking filter for selecting a channel of a wideband frequency. The tracking filter for selecting a channel of a wideband frequency, which is for increasing the selectivity of a wideband frequency, includes: a first tracking portion for filtering and amplifying a specific frequency band while converting a low input impedance of the input terminal of the tracking filter into a high impedance; a second tracking portion for maintaining the high impedance of the first tracking portion, and for filtering and amplifying the specific frequency band while increasing the selectivity Q of a frequency outputted from the first tracking portion; and a third tracking portion for filtering the specific band wherein has low input impedance and high output impedance.

Abstract: The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

Abstract: The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

Abstract: The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

Abstract: Disclosed is a high linearity programmable gain amplifier using a switch, including an attenuating portion for controlling a gain of a signal and an amplifying portion having a first amplifying part and a second amplifying part, for amplifying an input signal and outputting a signal amplified, wherein the first amplifying part has a first amplifier for amplifying an input signal and a first switch for activating the first amplifier and the second amplifying part has a second amplifier for amplifying an input signal and a second switch for activating the second amplifier.

Abstract: The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

Abstract: An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transistor bias unit, and an auxiliary transistor bias unit. The main transistor bias unit comprises a first bias resistor. The auxiliary transistor bias unit comprises a second bias resistor. The feedback block comprises first and second feedback resistors, and the output block comprises an output resistor and an output transistor.

Abstract: Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor and an auxiliary transistor, an attenuation unit including inductors respectively connected to the source of the main transistor and the source of the auxiliary transistor, a capacitor connected at one end thereof to the sources of the main transistor and auxiliary transistor and connected at the other end thereof to the gates of the main transistor and auxiliary transistor, and an output unit connected to the drains of the main transistor and auxiliary transistor.

Abstract: An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transistor bias unit, and an auxiliary transistor bias unit. The main transistor bias unit comprises a first bias resistor. The auxiliary transistor bias unit comprises a second bias resistor. The feedback block comprises first and second feedback resistors, and the output block comprises an output resistor and an output transistor.

Abstract: Disclosed are in-vivo interstitial antennas (IVIAs) for thermal treatment and deactivation of tumors by means of microwaves. An IVIA comprises a microwave monopole antenna (MMA) and a medical catheter, and the MMA is inserted into the medical catheter to form the IVIA. The MMA comprises coaxial cable and three types of capacitors. The coaxial cable consists of first and second conductors and a first insulator, and only the first conductor extends less than a quarter wavelength. The first capacitor is located around the end of the extended first conductor and includes the second insulator and the third conductor. The second and third capacitors are located between the first capacitor and the apertures of the MMAs and have about same function. Because of arbitrarily changed input impedance of the first capacitor, almost perfect matching can be achieved and desirable temperature distributions can be obtained due to the second and third capacitors.

Abstract: A mixer circuit with improving characteristic of image rejection by compensating mismatch in a spurious rejection mixer circuit (SRM) used in a transmitter is provided. The mixer circuit according to the present invention comprises an up conversion unit for modulating a base-band input signal to a RF signal, a down conversion unit for converting an output signal from the up conversion unit to a base-band output signal, mismatch estimating means for determining a mismatch compensation value by which spurious component in an output signal from the down conversion unit is minimized, wherein the spurious component results from mismatch in the up conversion unit, and mismatch compensating means for compensating the mismatch in the up conversion unit by using the mismatch compensation value determined by the mismatch estimating means.

Abstract: The present invention relates to a filter, and more particularly, to a tracking filter for selecting a channel of a wideband frequency. The tracking filter for selecting a channel of a wideband frequency, which is for increasing the selectivity of a wideband frequency, includes: a first tracking portion for filtering and amplifying a specific frequency band while converting a low input impedance of the input terminal of the tracking filter into a high impedance; a second tracking portion for maintaining the high impedance of the first tracking portion, and for filtering and amplifying the specific frequency band while increasing the selectivity Q of a frequency outputted from the first tracking portion; and a third tracking portion for filtering the specific band wherein has low input impedance and high output impedance.

Abstract: This invention is about the direct conversion receiver. It is excellent the receiving sensitivity that DC off-set, matching characteristics of the relationship of I/Q circuits and noise characteristics are improved. In order to achieve this purpose, the direct conversion receiver uses vertical bipolar junction transistor available in standard triple-well CMOS technology in the switching element of mixer and base-band analog circuits. Furthermore, as using the passive mixer in the other practical example of this invention, this invention controls the occurrence of l/f noise. As using the vertical bipolar junction transistor available in standard triple-well CMOS in the base-band analog circuits, this invention realizes the direct conversion receiver that DC off-set, matching characteristics of the relationship of I/Q circuit and noise characteristics are improved.

Abstract: Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor and an auxiliary transistor, an attenuation unit including inductors respectively connected to the source of the main transistor and the source of the auxiliary transistor, a capacitor connected at one end thereof to the sources of the main transistor and auxiliary transistor and connected at the other end thereof to the gates of the main transistor and-auxiliary transistor, and an output unit connected to the drains of the main transistor and auxiliary transistor.