Patent application number | Description | Published |
20080198939 | Transmitter circuit and radio transmission apparatus for transmitting data via radio by using impulses - A transmitter circuit, which transmits data by using an impulse, has a variable delay circuit and a logic circuit. The variable delay circuit takes a clock as an input, and delays the clock in accordance with the data. The logic circuit takes the clock and an output of the variable delay circuit as inputs, and outputs an impulse by performing a logic operation between the clock and the output of the variable delay circuit. | 08-21-2008 |
20080203825 | IMPULSE GENERATOR UTILIZING NONLINEAR TRANSMISSION LINE - The impulse generator comprises a nonlinear transmission line capable of obtaining an impulse with a small half value width and a large amplitude, in which a plurality of transmission line units having a unit line unit and a diode are connected in series, a pulse generator connected to the transmission terminal of the nonlinear transmission line, and a bias-dependent element connected to the reception terminal of the nonlinear line, wherein the anode of the diode of the transmission line unit is connected to the transmission line and the cathode is connected to the ground, and one end of the bias-dependent element is connected to the reception terminal of the transmission line and the other end is biased to a negative potential. | 08-28-2008 |
20080204089 | Dynamic frequency dividing circuit operating within limited frequency range - A frequency dividing circuit has a master circuit and a slave circuit, and a load section in at least either one of the master and slave circuits is constructed to provide an impedance that decreases with increasing frequency. | 08-28-2008 |
20090009384 | Radar Device and Processing Method of the Same - A radar device has a clock generator ( | 01-08-2009 |
20090129460 | Pulse Transmission Method, Pulse Transmission System, Transmitter, and Receiver - A pulse transmission method for transmitting data by using pulse signals, each having a predetermined pulse width; defining a symbol time at least N times the predetermined pulse width, N being at least 2; defining a basic delay time calculated by dividing the predetermined pulse width by a predetermined integer; placing the pulse signals in the symbol time by delaying the pulse signals by an integral multiple of the basic delay time from start of the symbol time, the number of the pulse signals being k and 0≦k≦N being satisfied; and transmitting the pulse signals. | 05-21-2009 |
20100061483 | PULSE RADIO TRANSMISSION APPARATUS AND TRANSCEIVER - A radio transmission apparatus has a first duty adjustment circuit which changes a duty of a clock signal, a second duty adjustment circuit which changes the duty of the clock signal to a duty different from the duty of the clock signal changed by the first duty adjustment circuit, a first AND circuit which takes a logical product between a data signal and the clock signal having passed through the first duty adjustment circuit, and a second AND circuit which takes a logical product between an output signal of the first AND circuit and the clock signal having passed through inversion of the output of the second duty adjustment circuit to generate a pulse signal. | 03-11-2010 |
20100091833 | TRANSMISSION DEVICE - A transmission device including a pulse generating section configured to generate a plurality of pulses using a signal of data and a signal obtained by delaying the signal of data, and to adjust the pulse width such that each of the plurality of pulses has a pulse width conforming to a sequence of the data; a band-pass filter filtering the plurality of pulses; and a transmission amplifier amplifying the filtered plurality of pulses and outputting the filtered plurality of pulses as a transmission signal. | 04-15-2010 |
20110135028 | IMPULSE RADIO COMMUNICATION DEVICE - An impulse radio communication device includes a short pulse generator configured to change a shape of an impulse to be output; a bandpass filter configured to receive the impulse and output the impulse as a wave packet; an amplifier configured to amplify an output from the bandpass filter; and an antenna configured to output the wave packet, output from the amplifier, as a wireless signal, the short pulse generator includes a control section configured to change the shape of the impulse to be output, in response to an environmental condition of a transmission path for wireless communication. | 06-09-2011 |
20110234443 | COMMUNICATION DEVICE AND IMAGING APPARATUS - A communication device includes an oscillator to generate an oscillation signal; a harmonic generator to generate a higher harmonic wave from the oscillation signal; a first filter to take out a first high frequency signal; a second filter to take out a second high frequency signal; a down conversion mixer to use the second high frequency signal to perform down conversion of a signal obtained by receiving a reflected signal of the first high frequency signal; a hybrid coupler to generate a first intermediate frequency signal and a second intermediate frequency signal, which are orthogonal with each other; a first mixer to take out a first baseband signal by mixing an output from the down conversion mixer with the first intermediate frequency signal; and a second mixer to take out a second baseband signal by mixing an output from the down conversion mixer with the first intermediate frequency signal. | 09-29-2011 |
20110235741 | RADIO COMMUNICATION APPARATUS - A radio communication apparatus includes a baseband signal generator to generate digital data; a clock generator to generate 2 | 09-29-2011 |
20120027057 | IMAGING APPARATUS, AND TRANSMISSION AND RECEPTION APPARATUS - A transmission and reception apparatus includes: a transmitter circuit to transmit to an object a transmission signal including a comb-shaped wave in which a first plurality of pulses are arranged in a comb shape; and a receiver circuit to receive a reflection signal based on the transmission signal. | 02-02-2012 |
Patent application number | Description | Published |
20130034131 | COMMUNICATION APPARATUS - a communication apparatus includes: a pulse generation unit configured to alternately generate a positive pulse and a negative pulse indicating presence or absence of a pulse in accordance with a value of a data signal; a band-pass filter configured to filter the pulse generated by the pulse generator; and a transmission amplifier configured to amplify a signal filtered by the band-pass filter, and to output the signal as a transmission signal. | 02-07-2013 |
20130195216 | COMMUNICATION DEVICE - A communication device includes: a converting part converting a data signal from a non-return-to-zero signal to a return-to-zero signal; a trigger flip-flop inverting an output signal every time the return-to-zero signal changes in one cycle; a first filter outputting a positive pulse and a negative pulse alternately, which indicate existence and absence of the pulse corresponding to a value of the data signal, by removing a low frequency component of an output signal of the trigger flip-flop. | 08-01-2013 |
20130243045 | RADIO COMMUNICATION APPARATUS AND PULSE SIGNAL TRANSMISSION METHOD IN RADIO COMMUNICATION APPARATUS - A radio communication apparatus for generating a pulse signal corresponding to a data signal, amplifying the generated pulse signal, and transmitting the amplified pulse signal as a radio signal, the apparatus including: a reference pulse signal generation unit which generates a reference pulse signal of opposite phase to the pulse signal and amplifies the reference pulse signal; and a combining unit which combines the amplified pulse signal and the amplified reference pulse signal, wherein a combined pulse signal output from the combining unit is transmitted as the radio signal. | 09-19-2013 |