8results about How to "Reduce chip area" patented technology

This invention provides a circuit and method for sampling and transmitting telemetry data from a cochlear implant, belonging to the field of telemetry technology for cochlear implants. The method amplifies the analog signal under test using a programmable gain amplifier, converts the signal into a pulse width signal using a voltage ramp generator and comparator, and then generates a short-duration step signal on the coil via an output driver to form a ringing pattern. An external device detects the interval between the step signals to reconstruct the signal magnitude. This invention eliminates the need for an analog-to-digital converter, significantly reducing power consumption and chip area, and improving data transmission efficiency. It is suitable for telemetry systems in various implantable medical devices such as cochlear implants. This invention significantly reduces the power consumption and layout area of ​​the implanted chip and shortens the single data transmission time to 48μs, improving efficiency by approximately 10 times, making it suitable for low-power implantable devices such as cochlear implants.

The invention discloses a time-to-digital converter based on a vernier double-chain structure, and relates to the technical field of integrated circuits. The converter comprises a signal holding circuit, a vernier double-chain rough measurement module, a data selector, a special time amplifier module and a digital coding unit, the vernier double-chain rough measurement module is composed of a main delay chain and a vernier delay chain, and 10ps-level rough measurement is achieved by adjusting the width-to-length ratio of an MOS tube of a phase inverter to control the delay difference of a unit. The data selector gates a residual time difference signal to the special time amplifier module, and the special time amplifier module is matched with a transmission gate through an RC network to realize 11mV / ps high-linearity time-voltage conversion; the digital coding unit integrates the rough measurement result and the accurate measurement result, and finally the 3.0 ps system resolution is achieved. A'rough measurement-fine measurement 'two-stage measurement architecture is adopted, a single-amplifier time division multiplexing design is adopted, a measurement dead zone is effectively eliminated, the chip area and power consumption are greatly reduced, and the device is particularly suitable for high-precision time measurement application such as laser radar and quantum calculation.

A switchable combiner and / or splitter circuit comprising at least two Wilkinson elements is suggested. The switchable circuit comprises one first terminal and for each Wilkinson element one pair of second terminals associated with the corresponding Wilkinson element. Each Wilkinson element connects the first terminal with the associated pair of second terminals. Each Wilkinson element includes a switchable component enabling selectively activating the associated pair of second terminals. The proposed solution combines a Single-Pole-Double-Through switch and a Wilkinson element and, thus, reduces the chip area required for integrating the circuit.

The disclosure provides an arbitrarily bendable metasurface waveguide structure and a design method thereof. The metasurface waveguide structure comprises a plurality of bendable structure units arranged without gaps in sequence, which are obtained by conformal transformation of linear structure units. The linear structure unit comprises a first dielectric column and two second dielectric columns, which are symmetrically arranged on both sides of the first dielectric column and form a circular arc interface. The bending radius and bending angle of the metasurface waveguide structure can be arbitrarily adjusted, and the equivalent refractive index can be kept unchanged after bending. Further, by adjusting the height, length, width, major axis and minor axis of the bendable structure unit, the metasurface waveguide structure can have lower transmission loss. The disclosure can improve the degree of freedom of the metasurface waveguide and realize more complex structures and devices on a chip.

A chip having integrated thereon a circuit (100) that comprises a first port (P1), a second port (P2) and a tapped transformer (110) comprising a first winding (111) and a second winding (112). Each winding comprises a first terminal, a second terminal and a number of taps connected at different positions between the first and second terminals. The circuit (100) further comprises a first programmable capacitor (C1) connected in shunt with the first winding (111) and a second programmable capacitor (C2) connected in shunt with the second winding (112), a first set of switches (S1) connected between the number of taps on the first winding (111) and a terminal of the first port (P1), and a second set of switches (S2) connected between the number of taps on the second winding (112) and a terminal of the second port (P2).

The invention provides an in-situ light sensing probability calculation system and a photoelectric hybrid calculation method thereof.The system comprises a light signal projection front end, a photoelectric probability bit array, a driving module, a reading module and a micro-control unit which are tightly coupled, and the photoelectric probability bit array comprises a plurality of photoelectric probability bit units; the driving module comprises a decoder and a grid voltage generator, the reading module comprises a comparator group and a reference voltage source corresponding to the comparator group, and the micro-control unit is a digital logic circuit; the photoelectric sensing function and the probability calculation function are integrated in the same unit, an optical signal serves as external excitation to directly determine the initial activation probability of neurons, in-situ loading of image data is achieved, an electric signal serves as internal excitation to bear weight and bias information, the voltage of an electric control grid is adjusted, and operation updating of a neural network is achieved; the method realizes direct conversion from light intensity to random bit stream, has ultrahigh photoelectric sensitivity and true randomness, and is suitable for high sensitivity of probabilistic reasoning in a complex environment.

The application provides a level conversion circuit for converting from a high level to a low level, the level conversion circuit comprising: a voltage dividing circuit configured to divide an input voltage to output an output voltage from an output node; an acceleration circuit configured to quickly switch the output voltage when the input voltage switches by quickly switching a first transistor to be turned on through a first capacitor; and a clamping protection circuit configured to prevent the output voltage from jumping up when the input voltage switches.

The application relates to a radio frequency switch unit, a radio frequency switch circuit, an integrated circuit chip and an electronic device. The radio frequency switch unit comprises a first inductor pair, a first switch module, a second switch module and a first absorption circuit, the first inductor pair comprises a first inductor and a second inductor, a first end of the first inductor is connected with a first node, a second end of the first inductor is connected with a second end of the second inductor, a first end of the second inductor is connected with a second node; a first end of the first switch module is connected with the second end of the first inductor and the second end of the second inductor, a second end of the first switch module is grounded; a first end of the second switch module is connected with the second node, a second end of the second switch module is connected with a first end of the first absorption circuit, a second end of the first absorption circuit is grounded; and the first absorption circuit comprises a first resistor and a first capacitor in parallel. Through the embodiment of the application, the chip area occupied by the radio frequency switch unit can be small, and the chip cost can be reduced.