摘要:
A multi-frequency antenna (1) comprises a dielectric substrate (100), an antenna element (110), a shunt inductor (120), a capacitor conductor (130), a series inductor (140), a grounded part (150) and a feeding point (160). The antenna element (110) is arranged on the substrate (100), and is electrically connected to the grounded part (150) through the shunt inductor (120). Moreover, the antenna element (110) is electrically connected to the feeding point (160) through a series capacitor formed by a part where the antenna element (110) faces the capacitor conductor (130) and the substrate (100) therebetween, and through the series inductor (140).
摘要:
A multi-frequency circularly polarized antenna (100) comprises a substrate and multi-frequency antennas (900, 901). The multi-frequency antennas (900, 901) comprise antenna elements (120, 220, 30, 420), shunt-inductor conductors (170, 270, 370, 470), series-capacitor conductors (160a, 160b, 260a, 260b, 360a, 360b, 460a, 460b), series-inductor capacitors (140, 240, 340, 440), a center point (199) and input/output terminals (1q0, 210, 310, 410). The multi-frequency circularly polarized antenna (100) is constructed by connecting the shunt-inductor conductors (170, 270, 370, 470) of the multi-frequency antennas (900, 901) at the center point (199) in a substantially perpendicular manner.
摘要:
One of the objects of this invention is to realize an antenna having low reflection loss over an extremely wideband. The antenna of the present invention is provided with a dielectric substrate, a plurality of antenna conductors formed on one surface of the dielectric substrate that are pseudo self-complementary on the surface, and a plurality of feed conductors symmetrical with respect to symmetrical surfaces of the antenna conductors, wherein a gap for a wavelength of 1/10 or less that of the wavelength of a usage frequency in a vacuum is provided at a center of rotational symmetry between the plurality of antenna conductors.
摘要:
There is provided a bandpass filter for a differential signal applicable to a device having a wide passband, being a device for transmitting a signal using a differential signal. Respective lines 1 and 2 and lines 3 and 4 are provide on two surfaces P1 and P2 at an inner layer of a dielectric body 9. Each two lines are arranged symmetrically about the same plane of symmetry C, and the length of each line is a quarter wavelength at the center frequency of a used band. Reference numerals 5 and 6 are input/output ends of the lines 1 and 2, and 7 and 8 are input output ends of lines 3 and 4. Opposite ends to the input output ends are open. If a differential signal is input to terminals 5, 6, a differential output appears at the terminals 7, 8. This device works as a bandpass filter.
摘要:
There is provided a bandpass filter for a differential signal applicable to a device having a wide passband, being a device for transmitting a signal using a differential signal. Respective lines 1 and 2 and lines 3 and 4 are provide on two surfaces P1 and P2 at an inner layer of a dielectric body 9. Each two lines are arranged symmetrically about the same plane of symmetry C, and the length of each line is a quarter wavelength at the center frequency of a used band. Reference numerals 5 and 6 are input/output ends of the lines 1 and 2, and 7 and 8 are input output ends of lines 3 and 4. Opposite ends to the input output ends are open. If a differential signal is input to terminals 5, 6, a differential output appears at the terminals 7, 8. This device works as a bandpass filter.
摘要:
There is provided a bandpass filter for a differential signal applicable to a device having a wide passband, being a device for transmitting a signal using a differential signal. Respective lines 1 and 2 and lines 3 and 4 are provide on two surfaces P1 and P2 at an inner layer of a dielectric body 9. Each two lines are arranged symmetrically about the same plane of symmetry C, and the length of each line is a quarter wavelength at the center frequency of a used band. Reference numerals 5 and 6 are input/output ends of the lines 1 and 2, and 7 and 8 are input output ends of lines 3 and 4. Opposite ends to the input output ends are open. If a differential signal is input to terminals 5, 6, a differential output appears at the terminals 7, 8. This device works as a bandpass filter.
摘要:
A semiconductor integrated circuit has a parallel conductor transmission line including a plurality of signal paths branching at a node. The signal paths have phase compensation sections for creating a phase constant of the transfer constant thereof, where the phase constant is inversely proportional to the length of the signal paths. The phase compensation sections are implemented by covering a microstrip line by a layer having a high dielectric constant or implemented by a second ground conductor disposed opposite to the microstrip conductor with a thin layer of a high dielectric constant. The integrated circuit comprises a plurality of square gate blocks having a plurality of logic gates arranged in an array. A signal source node is connected via respective input signal nodes of the gate blocks to the logic gates in the gate blocks through the respective signal paths having the phase compensation sections.
摘要:
A hybrid semiconductor device according to the present invention is implemented by an unipolar compound semiconductor transistor and a heterojunction bipolar transistor respectively formed in first and second multiple-level structures formed on a semi-insulating substrate, and the uppermost level of the first multiple-level structure is formed in a common layer which further provides the lowest level of the second multiple-level structure, wherein an isolation is given between the unipolar compound semiconductor transistor and the heterojunction bipolar transistor and penetrates from the common layer into the semi-insulating substrate, so that the first and second multiple-level structures are formed through a uniform epitaxial growth advantageous in the controllability.
摘要:
For reduction in occupation area, there is disclosed a microwave device fabricated on a semi-insulating substrate and comprising a passive component area where a plurality of passive component elements are formed and an active component area where at least one active element is formed, the passive component area having a film overlain by a dielectric film and a strip conductor extending on the dielectric film, wherein the film and the strip conductor are formed by a superconductive material, so that the dielectric material is decreased in thickness by virtue of the strip conductor of the superconductive material.
摘要:
Disclosed is a process for forming an electrostatic latent image on a recording element having a dielectric layer superposed on a conductive electrode. In the first step of this process, the recording element and a xerographic sensitive element having a photoconductive layer also superposed on a conductive electrode are charged with the same polarity. In the second step, the photosensitive element is brought into virtual contact with the recording element so that the charged surface of the photoconductive layer in the photosensitive element is in face-to-face relationship with the charged surface of the dielectric layer in the recording element. In the third step, an external voltage is imposed between the two conductive electrodes, said voltage being of at least a magnitude for producing an electric field causing breakdown of minute air-gaps present between the contacted surfaces of the photosensitive element and the recording element and, before the completion of the external voltage imposition, an optical image is projected onto the photoconductive layer in the photosensitive element.