Abstract:
PROBLEM TO BE SOLVED: To reduce vibrations of signal processing substrates, so that a signal of a millimeter wave between the signal processing substrates is transmitted with a high speed without using any connector or cable. SOLUTION: An apparatus includes: a first signal processing substrate 101 for processing a signal of a millimeter wave; a second signal processing substrate 201, signally coupled to the first signal processing substrate 101, for receiving and processing the signal of the millimeter wave; and a viscoelastic component 107 having a certain specific dielectric constant and a certain dielectric loss tangent provided between the first signal processing substrate 101 and the second signal processing substrate 201. The viscoelastic component 107 constitutes a dielectric transmission path. With this structure, since the viscoelastic component 107 absorbs vibrations at the time when external forces are imposed to the signal processing substrates 101, 201, it is possible to reduce vibrations of the first signal processing substrate 101 and the second signal processing substrate 201, and to transmit with a high speed a signal of a millimeter wave between the signal processing substrates via the viscoelastic component 107 without using any connector or cable. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce an influence of dimensional accuracy of a short block and mounting accuracy on characteristics in a waveguide-plane line change-over system. SOLUTION: A via hole 230 is provided at a transformation substrate 200, and a region surrounded by the via hole 230 forms a waveguide. A short block 100 provided in a connected way on the upper face of the transformation substrate 200 has a multi-layer substrate 110, and a conductive pattern 120 is formed on the upper face. In the multi-layer substrate 110, a via hole 130 is provided on an extension line from the via hole 230 of the transformation substrate 200, and a region surrounded with the via hole 130 forms a waveguide. A frame body 300 provided in a connected way on the rear face of the transformation substrate 200 is a metallic frame body, and a waveguide tube 310 connected to the waveguide in the transformation substrate 200 is formed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a small-sized antenna system which can obtain a necessary antenna gain by receiving radio waves from very close satellites with good sensitivity. SOLUTION: A waveguide 146b, etc., having a conic opening part 141b, etc., is arranged corresponding to each of wave collection positions of radio waves which are sent by satellites and collected by a reflector and a part overlapping with an adjacent waveguide is cut. A partition plate is provided at this cut part to separate waveguides. The opening part 141b of the waveguide 141b can be formed to a size larger than the distance between the waveguides and radio wave interference between the adjacent waveguides is reducible. Further, a gap 144 as a reception efficiency improving member equipped with a projection part 146b, etc., inside is provided in front of the waveguide 141b, etc. The projection part 146b, etc., is arranged at each center part of the opening part 141b, etc. The directivity is improved because of the presence of the projection part 146, etc., to improve the antenna efficiency.
Abstract:
PROBLEM TO BE SOLVED: To provide a small antenna device, which can receive radio waves from plural satellites which are very close with good sensitivity and can obtain the antenna gain of a practical level. SOLUTION: Waveguides 140a and 140b are arranged in response to the respective wave collection positions of radio waves which are transmitted from two satellites and are collected by reflecting mirrors. Dielectric bars 142a and 142b are installed on the respective radio wave incident sides of the waveguides 140a and 140b. Even if the inter-center distance between the waveguides 140a and 140b is set to an optimum value corresponding to the interval of the two satellites, based on the existence of the dielectric bars 142a and 142b and the respective diameters of the waveguides 140a and 140b are formed to be small in degree such that they are not overlapped, the directivity of a primary radiator 14 can be optimized. Consequently, spillover does not occur, and the drop of an antenna gain and the drop of a satellite radio wave reception C/N ratio owing to the increase of reception noise do not occur.
Abstract:
PROBLEM TO BE SOLVED: To provide a signal transmission device capable of exchanging data between electronic apparatuses without being connected with a general-purpose cable, and capable of achieving further reduction in power consumption, wide communication range and high transmission rate.SOLUTION: The signal transmission device 10 includes a high-frequency signal waveguide 20 that transmits a high-frequency signal transmitted from an electronic apparatus 40. An electronic apparatus 30 transmits a high frequency signal through the high-frequency signal waveguide 20 when the electronic apparatus 30 is disposed in proximity to the high-frequency signal waveguide 20.
Abstract:
PROBLEM TO BE SOLVED: To structure a millimeter-wave dielectric transmission system which can be easily configured without using a connector having a number of terminals and a wiring cable having a large mounting area. SOLUTION: The millimeter-wave dielectric transmission system is comprised of: semiconductor chips 30 which enable millimeter-wave communication and are provided on one of interposer substrates 4; antenna structures 32 connected thereto; two semiconductor packages 20a, 20b having molded resins 8 covered by the semiconductor chips 30 and the antenna structures 32; and a dielectric transmission line 21 which is provided between the two semiconductor packages 20a, 20b and can transmit millimeter-wave signals. The semiconductor packages 20a, 20b are mounted so that the antenna structures 32 hold the dielectric transmission line 21 therebetween. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To transmit an electromagnetic wave based on a millimeter wave signal in a dielectric transmission path, and to eliminate communication cables, connectors and the like which connect two signal processing boards to each other as in a conventional system by devising a support structure between the two millimeter wave signal processing boards and a signal transmission method. SOLUTION: In an electronic apparatus including a plurality of circuit boards, a support member for supporting the circuit boards is used as a transmission path of a radio signal. For instance, the electronic apparatus includes: a first printed board 1 for processing a millimeter wave signal; a second printed board 2 signal-connected to the printed board 1 and receiving the millimeter wave signal to process the signal; and a waveguide 513 arranged between the printed boards 1, 2 while having a predetermined dielectric constant, wherein the waveguide 513 constitutes a dielectric transmission path, and the waveguide 513 supports the printed boards 1, 2. By this structure, an electromagnetic wave based on a millimeter wave signal radiated from one end of the waveguide 513 constituting the dielectric transmission path can be received at the other end. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To simultaneously receive plural radio waves transmitted from plural satellites while executing the simplification of wiring with a receiver, the reduction of a producing cost, the reduction of an occupying area. SOLUTION: An antenna device 205 simultaneously collects radio waves from the two satellites 201A and 201B by a reflection mirror 203. In addition, the device 205 separates the collected radio waves by each satellite to convert to electric signals and converts the converted electric signal of each satellite to intermediate frequency signals of respectively different frequency band by a receiving unit 204. The device 205 simultaneously outputs the intermediate frequency signal of each of these two satellites to a receiver 207 through a single coaxial cable 206.
Abstract:
PROBLEM TO BE SOLVED: To simultaneously receive plural radio waves transmitted from plural satellites while executing the simplification of wiring with a receiver, the reduction of a producing cost, the reduction of an occupying area. SOLUTION: An antenna device 205 simultaneously collects radio waves from the two satellites 201A and 201B by a reflection mirror 203. In addition, the device 205 converts the collected radio waves to electric signals (received signals) by a receiving unit 204. In addition, the unit 204 separates the received signal to respective polarization components and gives processing such as frequency conversion for the received signal of each separated polarized wave to convert an intermediate frequency signal in a frequency band respectively different by each satellite. The device 205 simultaneously outputs the intermediate frequency signal of each of these two satellites to a receiver 207 through a single coaxial cable 206.
Abstract:
PROBLEM TO BE SOLVED: To stably receive or transmit radio waves of linearly polarized waves or circularly polarized waves including horizontally polarized wave components and vertically polarized wave components. SOLUTION: A metal plate 303 is a planar member provided with conductivity and integrally provided in a primary radiator 13. The metal plate 303 is arranged so as to optimize directivity relating to the horizontally polarized wave component and vertically polarized wave component of the radio waves. By the action of the metal plate 303 integrally provided in the primary radiator 13, the directivity relating to horizontally polarized waves and vertically polarized waves is optimized, the antenna gain of both vertically polarized waves and horizontally polarized waves is made the same and the radio waves are stably received or transmitted. Also, in the case of using this device as an antenna for transmission, the transmission power of both horizontally polarized waves and vertically polarized waves is almost made the same and power consumption is lowered.