Abstract: A memory device includes a first chip, a second chip and a processor. The second chip is coupled to the first chip at a first node. The second chip includes a first capacitor and a first variable resistor. The first capacitor is coupled to the first node. The first variable resistor is coupled in series with the first capacitor. The processor is coupled to the first node, and is configured to perform a first read operation to the first chip via the first node. A method for operating a memory device is also disclosed herein.

Abstract: The disclosure provides a system to simulate a simulated noise on the power zone block of a substrate. The system comprises a signal trace and a signal generating circuit. The signal trace is disposed adjacent to the power zone block. The signal generating circuit is electrically coupled to the signal trace, configured to transmit an alternating current signal over the signal trace. The alternating current signal transmitted over the signal trace is configured to induce a simulated noise on the power zone block, and a waveform of the simulated noise is determined by a frequency of the alternating current signal.

Abstract: A memory device includes a first chip, a second chip and a processor. The second chip is coupled to the first chip at a first node. The second chip includes a first capacitor and a first variable resistor. The first capacitor is coupled to the first node. The first variable resistor is coupled in series with the first capacitor. The processor is coupled to the first node, and is configured to perform a first read operation to the first chip via the first node. A method for operating a memory device is also disclosed herein.

Abstract: A memory device includes a first chip, a second chip and a processor. The second chip is coupled to the first chip at a first node. The second chip includes a first capacitor and a first variable resistor. The first capacitor is coupled to the first node. The first variable resistor is coupled in series with the first capacitor. The processor is coupled to the first node, and is configured to perform a first read operation to the first chip via the first node. A method for operating a memory device is also disclosed herein.

Abstract: The disclosure provides a system to simulate a simulated noise on the power zone block of a substrate. The system comprises a signal trace and a signal generating circuit. The signal trace is disposed adjacent to the power zone block. The signal generating circuit is electrically coupled to the signal trace, configured to transmit an alternating current signal over the signal trace. The alternating current signal transmitted over the signal trace is configured to induce a simulated noise on the power zone block, and a waveform of the simulated noise is determined by a frequency of the alternating current signal.

Abstract: An electronic device including a first casing, a second casing, at least one first connecting unit and at least one feeding unit is provided. The first casing includes a conductive material. The second casing includes a conductive material. The first casing and the second casing are conducted with each other through the first connecting unit. The feeding unit is electrically connected to the first casing and the second casing, wherein the electronic device forms an antenna structure with the first casing, the second casing, the first connecting unit and the feeding unit and transmits an electromagnetic signal via the feeding unit.

Abstract: An electronic device and an antenna reception tuning method thereof are provided. The electronic device includes a first main body, a second main body, a sensing unit, and a processing unit. The second main body, including an antenna and a matching unit, is disposed on the first main body through a hinge and adapted for being opened or closed relative to the first main body. The sensing unit is disposed on the electronic device, adapted for detecting a distance between the first main body and the second main body, and generates a control signal according to the distance, wherein the distance includes an angle and an open/close state between the first and the second main bodies. The processing unit is electrically connected to the sensing unit and the matching unit, and adjusts the matching unit according to the received control signal.

Abstract: An electronic device and an antenna reception tuning method thereof are provided. The electronic device includes a first main body, a second main body, a sensing unit, and a processing unit. The second main body, including an antenna and a matching unit, is disposed on the first main body through a hinge and adapted for being opened or closed relative to the first main body. The sensing unit is disposed on the electronic device, adapted for detecting a distance between the first main body and the second main body, and generates a control signal according to the distance, wherein the distance includes an angle and an open/close state between the first and the second main bodies. The processing unit is electrically connected to the sensing unit and the matching unit, and adjusts the matching unit according to the received control signal.

Abstract: An electronic device including a first casing, a second casing, at least one first connecting unit and at least one feeding unit is provided. The first casing includes a conductive material. The second casing includes a conductive material. The first casing and the second casing are conducted with each other through the first connecting unit. The feeding unit is electrically connected to the first casing and the second casing, wherein the electronic device forms an antenna structure with the first casing, the second casing, the first connecting unit and the feeding unit and transmits an electromagnetic signal via the feeding unit.

Abstract: An electronic device including a first shell, a second shell, a connecting unit, an antenna unit and an isolating unit is provided. A material of the first shell includes a conductive material. A material of the second shell includes a conductive material. The connecting unit includes two connecting portions connected to the first shell and the second shell. The antenna unit includes a first antenna and a second antenna. The first antenna and the second antenna correspond to the two connecting portions respectively and are disposed on the first shell or the second shell. The isolating unit is disposed between the first antenna and the second antenna and includes at least one isolating conductor. The isolating conductor is connected to the first shell and extends toward the second shell, such that the first shell and the second shell form a conducting circuit through the isolating conductor.

Abstract: Provided is a wide band filter structure including two coupling units and one bridge unit. Each of the coupling units has a joint. The joint is concentrically encircled by a spiral with two ends. One of the ends of the spiral is positioned at the joint. The bridge unit is connected to between the two spirals by the other ends thereof, respectively. The wide band filter structure achieves high impedance, prevents wide band Delta-I noise, improves electromagnetic interference (EMI) and electromagnetic compatibility (EMC), and reduces cost when used in related layout of printed circuit boards and IC package substrates.