Abstract: A signal transmission medium for transmitting EHF band signals from a first point to a second point, including: a first end at which a signal exchange with the first point takes place; a second end at which a signal exchange with the second point takes place; and a transmission line portion which is flexible and connects the first end and the second end. The transmission line portion includes: strip conductors which are formed substantially down a center of a flexible printed circuit board to establish electrical connection between a signal line at the first end and a signal line at the second end; and a pair of grounding sheets which are arranged in parallel to each other at a substantially constant gap from the flexible printed circuit board in 180-degree opposite directions. The cavities are formed between the pair of grounding sheets and the strip conductors.

Abstract: Provided is a wide band antenna having ultra-wide band and high performance at a low cost. An antenna element constituting a part of an opening cross section structure of a double cylinder ridge waveguide is spread on a plane. The antenna element has a ridge element portion (21) for adjusting antenna characteristic corresponding to a ridge portion and a radiation element portion (22) for electromagnetic wave radiation. Substantially at a leading end portion of the ridge element portion (21), a feeder terminal (24) is formed. Ground portions (23a and 23b) are maintained at a ground potential and the feeder terminal (24) is guided to an outside as a coplanar waveguide.

Abstract: An input device is provided which can input operations corresponding to play techniques used in stringed instruments. A guitar controller (10), which comprises a body part (31), a neck part (32) extending from the body part (31) and a head part (33) provided at the front end of the neck part (32), has, in the head part (33), a triaxial acceleration sensor (40) that can detect accelerations.

Abstract: An input device is provided which can input operations corresponding to play techniques used in stringed instruments. A guitar controller (10), which comprises a body part (31), a neck part (32) extending from the body part (31) and a head part (33) provided at the front end of the neck part (32), has, in the head part (33), a triaxial acceleration sensor (40) that can detect accelerations.

Abstract: Provided is an electromagnetic wave transmission medium which is suited for mass production and does not affect a transmission mode. The electromagnetic wave transmission medium includes, as a main element, a flexible cylindrical tube (1) molded so that a cross-sectional shape of the cylindrical tube in a direction orthogonal to a tube axis is uniform in a direction of the tube axis. The cylindrical tube (1) includes an inner wall formed of a conductive layer having a thickness equal to or more than a skin depth. The cross-sectional shape is a circular ridge waveguide shape having a ridge (1b) which is oriented to a cylindrical axis and is symmetric with respect to a center, and the ridge (1b) has a structure to be fed with electricity.

Abstract: To provide a smaller radar system having a simple structure with as small number of component parts as possible at a lower cost as compared to conventional ones. A radar system 1 including a 3 dB coupler 5 having four terminals, and a pulse generator 8. A first terminal 51 of the 3 dB coupler 5 is supplied with an output signal from a high frequency oscillator 2 while a second terminal 52 of the 3 dB coupler 5 is connected to a transmitting and receiving antenna 4. Third and fourth terminals 53 and 54 of the 3 dB coupler 5 are connected to two-state devices 6, 7, respectively, which are in impedance mismatched only for a predetermined period of time to totally reflect the signal from the 3 dB coupler 5 and are in impedance matched during the time period other than the predetermined time to direct a signal from the 3 dB coupler 5 to a subsequent electronic circuit.

Abstract: Provided is a wide band antenna having ultra-wide band and high performance at a low cost. An antenna element constituting a part of an opening cross section structure of a double cylinder ridge waveguide is spread on a plane. The antenna element has a ridge element portion (21) for adjusting antenna characteristic corresponding to a ridge portion and a radiation element portion (22) for electromagnetic wave radiation. Substantially at a leading end portion of the ridge element portion (21), a feeder terminal (24) is formed. Ground portions (23a and 23b) are maintained at a ground potential and the feeder terminal (24) is guided to an outside as a coplanar waveguide.

Abstract: To provide a smaller radar system having a simple structure with as small number of component parts as possible at a lower cost as compared to conventional ones. A radar system 1 including a 3 dB coupler 5 having four terminals, and a pulse generator 8. A first terminal 51 of the 3 dB coupler 5 is supplied with an output signal from a high frequency oscillator 2 while a second terminal 52 of the 3 dB coupler 5 is connected to a transmitting and receiving antenna 4. Third and fourth terminals 53 and 54 of the 3 dB coupler 5 are connected to two-state devices 6, 7, respectively, which are in impedance mismatched only for a predetermined period of time to totally reflect the signal from the 3 dB coupler 5 and are in impedance matched during the time period other than the predetermined time to direct a signal from the 3 dB coupler 5 to a subsequent electronic circuit.

Abstract: Provided is an electromagnetic wave transmission medium which is suited for mass production and does not affect a transmission mode. The electromagnetic wave transmission medium includes, as a main element, a flexible cylindrical tube (1) molded so that a cross-sectional shape of the cylindrical tube in a direction orthogonal to a tube axis is uniform in a direction of the tube axis. The cylindrical tube (1) includes an inner wall formed of a conductive layer having a thickness equal to or more than a skin depth. The cross-sectional shape is a circular ridge waveguide shape having a ridge (1b) which is oriented to a cylindrical axis and is symmetric with respect to a center, and the ridge (1b) has a structure to be fed with electricity.

Abstract: A ground electrode is provided on a first surface of a dielectric body. A radiation electrode has a first end which is left open and a second end which is connected to the ground electrode. A feeding terminal is provided on the first surface. A feeding electrode has a first end which is connected to the feeding terminal and a second end which is connected to the ground electrode. At least a part of the feeding electrode is extended in parallel with an elongated direction of the radiation electrode, so as to excite the radiation electrode with an induction coupling in a non-contact manner.

Abstract: A plurality of probes such as a signal probe (3) and a power supply probe (4) are provided into a metal block (1) so as to penetrate. Each of the probes has a movable pin (11). A tip of the movable pin is projecting from one surface of the metal block (1). And a projection length of the tip is variable. A DUT 20 is pressed onto the surface of the metal block (1) to contact between electrode terminals (21 to 24) and tips of the probes to test characteristics of the DUT. At least one of the probes is capacity loaded probe having a capacitor by providing a dielectric layer and a metal film to peripheral of the probe. As a result, noise can be removed reliably. Additionally, when the capacity loaded probe is used as the power supply probe, a voltage drop is reduced at the power supply terminal in a case of change of the output.

Abstract: At least one filter block (25, 35, 45) is formed in a thin and flat dielectric multilayer structure (21) and fixed with radiation elements (2, 3). Each filter block includes at least one of a low-pass filter, a high-pass filter and a band-eliminating filter. On the surface (one major surface) side and/or the side face of the multilayer structure, at least one radiation element (2, 3) being connected with the filter block is provided and feeding parts (28, 38, 48) for supplying signal to the radiation elements are provided on the rear surface of the multilayer structure. Consequently, the antenna and the filter block are integrated and a small surface mountable antenna with a built-in filter of a structure such that signals are not mixed each other even when signals of a plurality of frequency bands are transmitted/received can be obtained.

Abstract: A ground electrode is provided on a first surface of a dielectric body. A radiation electrode has a first end which is left open and a second end which is connected to the ground electrode. A feeding terminal is provided on the first surface. A feeding electrode has a first end which is connected to the feeding terminal and a second end which is connected to the ground electrode. At least a part of the feeding electrode is extended in parallel with an elongated direction of the radiation electrode, so as to excite the radiation electrode with an induction coupling in a non-contact manner.

Abstract: An approximately rectangular plate-shaped radiation member (2) is provided and support portions (4,6) are attached to lower surface end portions adjacent to a pair of parallel shorter sides of the radiation member (2). The support portion (4) is composed of a laminated circuit member including a laminated demultiplexer and a laminated band pass filter of the reception side and the transmission side respectively connected to the laminated demultiplexer. The radiation member (2) has a power supply terminal (2c) and a ground terminal (2d) at the end portion where the support portion (4) is mounted. The power supply terminal (2c) and the ground terminal (2d) are connected to an antenna terminal (4a) and the ground terminal (4b) of the laminated circuit, respectively. The radiation member (2) has a radiation electrode (2a) where a slot (2b) is formed. The shape of the slot is set so that the radiation electrode (2a) causes resonance in a plurality of frequency bands.

Abstract: A plurality of probes such as a signal probe (3) and a power supply probe (4) are provided into a metal block (1) so as to penetrate. Each of the probes has a movable pin (11). A tip of the movable pin is projecting from one surface of the metal block (1). And a projection length of the tip is variable. A DUT 20 is pressed onto the surface of the metal block (1) to contact between electrode terminals (21 to 24) and tips of the probes to test characteristics of the DUT. At least one of the probes is capacity loaded probe having a capacitor by providing a dielectric layer and a metal film to peripheral of the probe. As a result, noise can be removed reliably. Additionally, when the capacity loaded probe is used as the power supply probe, a voltage drop is reduced at the power supply terminal in a case of change of the output.

Abstract: A receiving antenna system includes an antenna unit, a receiver unit, a down converter and a DC power/control supply. The antenna unit includes a parabolic reflector, a feed horn and an orthomode transducer, which are configured to capture, isolate, and output respective first and second polarized RF signals. The receiver unit is coupled to the antenna unit and is configured to amplify the respective RF signals and output a selected one of the respective amplified RF signals in response to a DC control signal. The down converter is coupled to the receiver unit via a transmission line and is configured to further amplify, down convert and output the selected amplified RF signal as an intermediate signal. The DC power/control supply is coupled to the receiver unit via the same transmission and is configured to produce a power/control signal that is transmitted over the same transmission line in which the selected amplified RF signal is transmitted, thereby providing power and control to the receiver unit.

Abstract: At least one filter block (25, 35, 45) is formed in a thin and flat dielectric multilayer structure (21) and fixed with radiation elements (2, 3). Each filter block includes at least one of a low-pass filter, a high-pass filter and a band-eliminating filter. On the surface (one major surface) side and/or the side face of the multilayer structure, at least one radiation element (2, 3) being connected with the filter block is provided and feeding parts (28, 38, 48) for supplying signal to the radiation elements are provided on the rear surface of the multilayer structure. Consequently, the antenna and the filter block are integrated and a small surface mountable antenna with a built-in filter of a structure such that signals are not mixed each other even when signals of a plurality of frequency bands are transmitted/received can be obtained.

Abstract: An approximately rectangular plate-shaped radiation member (2) is provided and support portions (4,6) are attached to lower surface end portions adjacent to a pair of parallel shorter sides of the radiation member (2). The support portion (4) is composed of a laminated circuit member including a laminated demultiplexer and a laminated band pass filter of the reception side and the transmission side respectively connected to the laminated demultiplexer. The radiation member (2) has a power supply terminal (2c) and a ground terminal (2d) at the end portion where the support portion (4) is mounted. The power supply terminal (2c) and the ground terminal (2d) are connected to an antenna terminal (4a) and the ground terminal (4b) of the laminated circuit, respectively. The radiation member (2) has a radiation electrode (2a) where a slot (2b) is formed. The shape of the slot is set so that the radiation electrode (2a) causes resonance in a plurality of frequency bands.

Abstract: A receiving antenna system includes an antenna unit, a receiver unit, a down converter and a DC power/control supply. The antenna unit includes a parabolic reflector, a feed horn and an orthomode transducer, which are configured to capture, isolate, and output respective first and second polarized RF signals. The receiver unit is coupled to the antenna unit and is configured to amplify the respective RF signals and output a selected one of the respective amplified RF signals in response to a DC control signal. The down converter is coupled to the receiver unit via a transmission line and is configured to further amplify, down convert and output the selected amplified RF signal as an intermediate signal. The DC power/control supply is coupled to the receiver unit via the same transmission and is configured to produce a power/control signal that is transmitted over the same transmission line in which the selected amplified RF signal is transmitted, thereby providing power and control to the receiver unit.

Abstract: A receiving antenna system includes an antenna unit, a receiver unit, a down converter and a DC power/control supply. The antenna unit includes a parabolic reflector, a feed horn and an orthomode transducer, which are configured to capture, isolate, and output respective first and second polarized RF signals. The receiver unit is coupled to the antenna unit and is configured to amplify the respective RF signals and output a selected one of the respective amplified RF signals in response to a DC control signals. The down converter is coupled to the receiver unit via a transmission line and is configured to further amplify, down convert and output the selected amplified RF signal as an intermediate signal. The DC power/control supply is coupled to the receiver unit via the same transmission and is configured to produce a power/control signal that is transmitted over the same transmission line in which the selected amplified RF signal is transmitted, thereby providing power and control to the receiver unit.