5 results about "Artificial transmission line" patented technology

The application relates to the technical field of wireless communication, and provides a hybrid distributed power amplifier, which comprises a first amplifier module and a second amplifier module, the first amplifier module comprises at least two first stacked units, a first artificial transmission line and a second artificial transmission line, the output ends of the two first stacked units are electrically connected through the second artificial transmission line, the output end of the second first stacked unit serves as the output end of the first amplifier module, the sizes of the two first stacked units are sequentially decreased to form a non-uniform distribution arrangement, the second amplifier module comprises at least two second stacked units, a third artificial transmission line and a fourth artificial transmission line, the input end of the second stacked unit is connected with the input end of the first stacked unit, the second stacked unit is used for improving power synthesis and reducing loss, and the sizes of the two second stacked units are the same to form a uniform distribution arrangement. The application can improve the gain and efficiency of the distributed amplifier.

A distributed driver for an optic signal generator comprising amplifier cells having an amplifier cell input configured to receive the input signal and amplifiers configured to amplify the received signal to create an amplified signal, and an amplifier cell output. The distributed driver also includes an input path connected to the amplifier cell input to receive the input signal and distribute the input signal to the two or more amplifier cells. The input path includes one or more buffers configured to introduce a delay into the input signal. An output path is provided and connects to the amplifier cell outputs of the two or more amplifier cells. The output path is configured to receive the amplified signal and the output path includes one or more inductors that incorporated with the parasitic capacitance from the two or more amplifier cells form the LC segments of an artificial transmission line.

The invention discloses an ultra-bandwidth impedance matching circuit structure, and relates to the technical field of radio frequency microwave integrated circuits, the ultra-bandwidth impedance matching circuit structure comprises a first transmission line, a second transmission line, a third transmission line and a fourth transmission line, the initial ends of the first transmission line and the third transmission line are connected with a signal source input end, and the termination ends are connected with a load end; the termination end of the second transmission line and the termination end of the fourth transmission line are connected with the input end of a signal source and connected with the starting end of the first transmission line and the starting end of the third transmission line, and the starting end of the second transmission line and the starting end of the fourth transmission line are connected with the signal ground. 4-13GHz broadband matching is achieved, a multi-stage LC element is not needed, energy loss is reduced, the antenna is suitable for MMIC integration and can be directly integrated with a power amplifier, an additional choke inductor is not needed, the center frequency is changed by adjusting the wire length, or the impedance conversion ratio is adjusted by changing the wire width and the winding form.

The invention discloses a superconducting Josephson traveling wave parameter amplifier chip with distributed phase correction and a preparation method, and relates to the technical field of low-temperature microwave amplifier design and manufacturing, and the superconducting Josephson traveling wave parameter amplifier chip comprises an input / output port, an artificial transmission line formed by a superconducting Josephson series array, and an LC resonator unit array distributed along the artificial transmission line. The artificial transmission line is formed by connecting interdigital electrodes and superconductive Josephson junctions in series, wherein the interdigital electrodes are uniformly distributed along the line. The LC resonator unit is composed of a plate capacitor and a plane inductor, a lower electrode of the plate capacitor is divided into two parts, a polar plate of one part is a complete rectangular metal plate, and a polar plate of the other part is of an interdigital structure and is meshed with the interdigital structure of the superconducting Josephson series array artificial transmission line. Non-linear frequency mixing of input signals can be achieved through an artificial transmission line composed of a superconductive Josephson series array, distributed phase correction is provided for signal transmission along the line through interdigital coupling of an LC resonator array and the artificial transmission line, and gain improvement of the device is achieved.

The invention belongs to the technical field of microwave and millimeter wave integrated circuits, and relates to an ultra-wideband distributed low-noise amplifier, which comprises an input port, an output port and a signal amplification path connected between the input port and the output port, the signal amplification path comprises N cascaded Cascode amplification units; the grid electrodes of the Cascode amplification units are connected in series through a section of grid electrode artificial transmission line; the drain electrodes of the Cascode amplification units are connected in series through a section of drain electrode artificial transmission line; the length of the drain electrode artificial transmission line is gradually reduced, and the length of the grid electrode artificial transmission line is gradually increased; the length of the drain electrode artificial transmission line is gradually reduced from the input side to the output side, the overall gain and the flatness of the overall gain in the broadband range are improved, the length and the gate width of the gate electrode artificial transmission line are synchronously and gradually increased from the input side to the output side, the noise coefficient is reduced, the output power and the linearity are improved, and meanwhile the gain is improved. And the stability and the signal transmission integrity of the gate artificial transmission line in a broadband are ensured.