摘要:
A device and method for the non-invasive measurement of blood glucose concentrations by millimeter waves. The device includes a millimeter wave generator; a TE10 mode rectangular waveguide transmitting a millimeter wave generated by the millimeter wave generator; and a plane parallel plate chosen to yield a minimal point of the power reflection coefficient of the millimeter wave incident to and reflected from the dielectric object under test via the TE10 mode rectangular waveguide and the plane parallel plate. The device also includes power detectors detecting the powers of the incident wave generated by the millimeter wave generator and the reflected wave from the dielectric object via the plane parallel plate; a temperature sensor measuring a temperature of the dielectric object; and a reader reading the minimum power reflection coefficient and a corresponding frequency from the incident and reflected wave detected by the power detectors.
摘要:
A monolithic multi-functional integrated sensor and method for making the monolithic multi-functional integrated sensor. The monolithic multi-functional integrated sensor includes: a pressure sensor including a plurality of piezoresistors having resistance values which vary with a change in external pressure, the piezoresistors being disposed in a direction so as to be subject to a piezoresistive effect produced by the external pressure at or beyond a predetermined first level; and a temperature sensor including a resistor having a resistance value which varies with a change in temperature, the resistor being disposed in a direction so as to be subject to a piezoresistive effect produced by the external pressure below a predetermined second level.
摘要:
A microwave transponder. The microwave transponder includes a conductive plate including an antenna, and a semiconductor chip disposed within a terminal gap located in a vicinity of a center of the conductive plate. A window of a predetermined shape is formed to extend from the terminal gap toward a side of the conductive plate. The perfect impedance matching is fulfilled even when the transponder is bent. Since the return loss of the electromagnetic power is reduced at least in a quarter through the impedance matching, the energy transferred to the transponder is maximized.
摘要:
An optical device module including an optical fiber for transmitting light, an optical device for receiving light transmitted through the optical fiber, and a lens member installed between the optical fiber and the optical device, for focusing the light emitted from the optical fiber to the optical device, the lens member having a flat plane facing the optical device and a semi-spherical convex plane facing an end of the optical fiber, and the lens member including a concave portion having a predetermined curvature, for transmitting incident light, formed in the center of the convex plane, a light transmitting region corresponding to the concave portion provided in the center of the flat plane, a first reflecting portion formed on the portion of the convex plane excluding the concave portion, and a second reflecting portion formed on the portion of the flat plane excluding the light transmitting region.
摘要:
An optical pickup capable of multiple track scanning, including a light source having at least two vertical cavity surface emitting lasers (VCSELs) to emit at least two or more light beams and a light controlling device for controlling the focal position of a light formed on one type of recording medium of two formats of different thicknesses, is provided. The light emitted from each VCSEL is focused on adjacent tracks of the recording medium via a polarization beam splitter, the light controlling device and an objective lens in sequence, and the light reflected from the recording medium is received by a photodetector via the objective lens, the light controlling device and the polarization beam splitter. The number of photodetectors correspond to the number of VCSELs to receive lights corresponding to each track.
摘要:
A microwave transponder. The microwave transponder includes a conductive plate including an antenna, and a semiconductor chip disposed within a terminal gap located in a vicinity of a center of the conductive plate. A window of a predetermined shape is formed to extend from the terminal gap toward a side of the conductive plate. The perfect impedance matching is fulfilled even when the transponder is bent. Since the return loss of the electromagnetic power is reduced at least in a quarter through the impedance matching, the energy transferred to the transponder is maximized.
摘要:
A digital angular velocity detection device, including a stat or formed on a substrate. A rotor operable to rotate in response to an external force is provided. The rotor has a plurality of electrodes formed at regular intervals on a curve at a predetermined radius away from a center of the rotor. A detector having detection electrodes facing the plurality of electrodes is provided. The detection electrodes are operable to detect a rotation frequency of the rotor based on a number of electrostatic capacitance variations generated between the plurality of electrodes and the detection electrodes.
摘要:
In receiving information on an item by use of electromagnetic waves propagating from the item in which a radio frequency identification (RFID) chip is embedded, a portable handset requests the information on the item that is stored in the RFID chip to the RFID chip-embedded item, receives from the item the information on the item, and, if additional information is needed other than the received information, requests the additional information to a server storing the information on the item by using the received information.
摘要:
A light emitting apparatus which has reduced power consumption is provided. The light emitting apparatus includes a light emitting device and a thermoelectric cooler which cools the light emitting device. The light emitting device and the thermoelectric cooler are driven by a single voltage source. The light emitting apparatus operates the thermoelectric cooler using a current which is normally consumed as heat energy by a bias resistor in a circuit. Accordingly, the circuit is simplified and power consumption is reduced.
摘要:
A mobile phone including a perfume spraying apparatus, the perfume spraying apparatus including a perfume storage unit capable of storing at least one perfume type and a perfume spraying unit, wherein the perfume spraying unit includes a perfume chamber coupled to the perfume storage unit by a perfume flow path, a pressure unit to pressurize the perfume chamber, and a nozzle to spray perfume outside the mobile phone. The mobile phone may include a control unit to instruct the perfume spraying apparatus to spray perfume when a button of the mobile phone is pushed and/or when the mobile phone is called and may change a type or amount of perfume sprayed according to an increase or decrease in a user's voice volume, according to a caller, according to a user customization and/or according to a noise change in a user's surroundings.