Patent application number | Description | Published |
20140266345 | ELECTRONIC CIRCUIT, RADAR APPARATUS, AND METHOD OF PERFORMING SELF-DIAGNOSIS ON RADAR APPARATUS - An electronic circuit includes a first PLL circuit including a first frequency divider whose frequency-division ratio is variably controlled, a second frequency divider configured to divide a frequency of a signal input into the first frequency divider, a delay circuit configured to delay an output signal of the second frequency divider, a second PLL circuit configured to receive an output signal of the delay circuit as a reference signal, and a mixer circuit configured to receive as inputs an oscillating signal of the first PLL circuit and an oscillating signal of the second PLL circuit. | 09-18-2014 |
20140285238 | PLL CIRCUIT AND PHASE COMPARISON METHOD IN PLL CIRCUIT - A PLL circuit includes a divider configured to generate a divided signal having a cycle of T/M (where M is an integer greater than or equal to two) by dividing an oscillation signal; a phase comparator configured to generate a phase comparison result by calculating an exclusive logical OR of M reference signals and the divided signal, the M reference signals having the cycle of T and respective time intervals shifted sequentially by T/2M; a loop filter configured to generate a voltage signal using the phase comparison result as input; and a voltage-controlled oscillator configured to generate the oscillation signal by oscillating at a frequency depending on the voltage signal. | 09-25-2014 |
20150028957 | PLL DEVICE - A PLL device includes a variable frequency oscillator and a frequency divider section. The variable frequency oscillator varies an oscillation frequency in response to a control signal including information on a phase difference between a reference signal and a frequency division signal and oscillates an output signal obtained by multiplying a frequency of the reference signal. The frequency divider section frequency-divides the output signal to generate the frequency division signal. An injection locked frequency divider is arranged in the frequency divider section, the control signal is input to the injection locked frequency divider, and the operation frequency of the injection locked frequency divider is controlled by the control signal. | 01-29-2015 |
20150072630 | HIGH-FREQUENCY SIGNAL GENERATION CIRCUIT, TRANSMITTER, AND RECEIVER - A voltage controlled oscillator outputs an output signal whose frequency corresponds to inputted control voltage. A distributor distributes the output signal outputted from the voltage controlled oscillator. A plurality of injection-locked oscillators regulate self-oscillation frequencies according to the above frequency and output signals obtained by frequency-multiplying signals distributed by the distributor. A combiner combines and outputs the signals outputted from the plurality of injection-locked oscillators. This makes it possible to increase output power while preventing an operating band from narrowing. | 03-12-2015 |
20150276919 | PHASED-ARRAY TRANSMITTER, TRANSCEIVER, AND RADAR APPARATUS - A phased-array transmitter includes a first PLL for transmission, a control circuit, a plurality of transmission units, a delay circuit, and a second PLL for self-test. The first PLL is configured to generate a reference transmission signal, and the control circuit is configured to control the first PLL. The transmission units are configured to receive the reference transmission signal, and perform amplification and phase control to output unit transmission waves, respectively. The delay circuit is configured to delay a signal based on the reference transmission signal, and the second PLL is configured to receive an output signal of the delay circuit, and generate a self-test signal for performing self-test. | 10-01-2015 |
20160006131 | HIGH-FREQUENCY MODULE AND METHOD FOR MANUFACTURING THE SAME - A high-frequency module includes an integrated body including a semiconductor chip and a reflector, the semiconductor and the reflector being integrated by a resin; an antenna provided with a space from the reflector; and a rewiring layer provided on the surface of the integrated body, the rewiring layer including a rewiring line electrically coupling the semiconductor chip to the antenna. Further, a method for manufacturing a high-frequency module, the method includes forming an integrated body by integrating a semiconductor chip with a reflector by a resin; and forming a rewiring layer on the surface of the integrated body, the rewiring layer including a rewiring line electrically coupling the semiconductor chip to an antenna provided with a space from the reflector. | 01-07-2016 |
20160065226 | PLL CIRCUIT, METHOD, AND ELECTRONIC APPARATUS - A PLL circuit includes a frequency divider dividing an oscillation signal to generate a divided signal having a cycle of T/M (M: an integer greater than one); a phase comparator generating M reference signals by sequentially delaying a reference signal having a cycle of T one after another by a predetermined delay time and generating an Exclusive OR calculation result of the M reference signals and the divided signal; a loop filter generating a voltage signal based on the Exclusive OR calculation result input thereto; a voltage-controlled oscillator generating the oscillation signal by oscillating at a frequency in accordance with the voltage signal; and a control circuit adjusting the predetermined delay time to be equal to T/2M based on an Exclusive OR calculation result of at least two of the M reference signals. | 03-03-2016 |