Abstract: Techniques and architectures for providing FSK signal modulation using mixing for the generation of the two output frequencies are described. In an embodiment, a frequency-shift keying (FSK) transmitter may be operative to provide transmission of wireless signals. The FSK transmitter may include a high-frequency generator to generate at least one high-frequency wave signal based on a fixed frequency signal, a low-frequency generator to generate at least one low-frequency wave signal based on the fixed frequency signal, and at least one mixer to mix the at least one high-frequency wave signal and the at least one low-frequency wave signal to generate a logic signal, the logic signal comprising one of a logic 0 signal or a logic 1 signal based on digital input data.

Abstract: Techniques and architectures for providing FSK signal modulation using mixing for the generation of the two output frequencies are described. In an embodiment, a frequency-shift keying (FSK) transmitter may be operative to provide transmission of wireless signals. The FSK transmitter may include a high-frequency generator to generate at least one high-frequency wave signal based on a fixed frequency signal, a low-frequency generator to generate at least one low-frequency wave signal based on the fixed frequency signal, and at least one mixer to mix the at least one high-frequency wave signal and the at least one low-frequency wave signal to generate a logic signal, the logic signal comprising one of a logic 0 signal or a logic 1 signal based on digital input data.

Abstract: A method for detecting a malicious circuit on an integrated circuit chip is provided, in which temperature sensors are thermally coupled to primary circuitry on the chip. Signals obtained from the temperature sensors are indicative of power dissipation by the primary circuity on the integrated circuit chip. Comparison with a baseline signal, or golden signature, can be used to determine the presence of a malicious circuit in the primary circuitry.

Abstract: An amplifier and corresponding method include a field-effect transistor (FET) amplifier and a cascode FET. Each FET may operate with a positive ratio between its third-order nonlinearity coefficient and its linear gain. An inductor added at a gate of the cascode FET, operatively coupled with other components in a circuit, results in a first equivalent impedance looking into an input of the cascode FET. The first equivalent impedance may substantially offset a distortion output of the FET amplifier based upon the added inductor. The inductor operatively coupled with the circuit may result in a second equivalent impedance looking out of the gate of the cascode FET. The second equivalent impedance may substantially offset a distortion output of the cascode FET based upon the added inductor. In addition, a programmable capacitor connected between the gate and drain of the cascode FET may further substantially offset a distortion output of each FET.

Abstract: An instrumentation amplifier that includes input capacitance cancellation is provided. The architecture includes programmable capacitors between the input stage and a current feedback loop of the instrumentation amplifier to cancel input capacitances from electrode cables and a printed circuit board at the front end. An on-chip calibration unit can be employed to calibrate the programmable capacitors and improve the input impedance.

Abstract: A method for detecting a malicious circuit on an integrated circuit chip is provided, in which temperature sensors are thermally coupled to primary circuitry on the chip. Signals obtained from the temperature sensors are indicative of power dissipation by the primary circuity on the integrated circuit chip. Comparison with a baseline signal, or golden signature, can be used to determine the presence of a malicious circuit in the primary circuitry.

Abstract: An instrumentation amplifier that includes input capacitance cancellation is provided. The architecture includes programmable capacitors between the input stage and a current feedback loop of the instrumentation amplifier to cancel input capacitances from electrode cables and a printed circuit board at the front end. An on-chip calibration unit can be employed to calibrate the programmable capacitors and improve the input impedance.