30 results about "Radio wave radiation" patented technology

A tag device that performs high-quality radio communication without radio wave radiation or receiving characteristics being deteriorated near a person's body and without hindering communication by another IC tag. A main loop section sends and receives radio waves. The main loop section is a metal foil and has the shape of a long thin loop. The area of the main loop section is smaller than the area of a dielectric substrate. The main loop section covers part of surfaces of the dielectric substrate and part of sides of the dielectric substrate so as to put the dielectric substrate inside the loop. The main loop section is mounted in a horizontal direction of the dielectric substrate. Each of capacitive load sections is a metal foil and has a load corresponding to a capacitance component. The capacitive load sections are located at both end portions of the main loop section which covers part of the front side of the dielectric substrate and are located at both end portions of the main loop section which covers part of the reverse side of the dielectric substrate. A control unit is connected to the main loop section and controls information via the radio waves.

A measurement apparatus includes an anechoic chamber, a DUT board, rotation units, and a feeding arm. The anechoic chamber has inner-walls. Each inner-wall is covered with a radio wave absorber. One of the inner-wall is a first wall with an aperture and the other inner-walls are second walls. The DUT board holds a first antenna to be measured with radiation property and a probe to detect a signal from the first antenna. A part of the DUT board is inserted into the anechoic chamber through the aperture opened in the first wall. One end of the feeding arm holds a second antenna radiating a radio wave to the first antenna in the anechoic chamber. Each rotation unit provides on each second wall and is selectively attached to the other end of the feeding arm for rotating the second antenna and for feeding to the second antenna.

An object is to provide a module socket capable of increase the reliability of module characteristics obtained by testing a wireless module. A module socket is equipped with a seat member having a placement surface to come into contact with a mounting surface, mounted with an antenna, of a wireless module having the antenna and a gap formed within a prescribed distance of the antenna in a radio wave radiation direction in a state that the wireless module is set on the placement surface.

A vehicle front portion structure includes a cover; an absorber provided rearward of the cover of a vehicle, the absorber being configured to absorb energy of a collision between the cover and a collision body while allowing the cover to move rearward; a front grill provided rearward of the cover and above the absorber, the front grill being configured to move rearward along with the cover during the collision between the cover and the collision body; a radar device attached to the front grill; and a deformation limiting member provided outside a radio wave irradiation range of the radar device and in a space between the radar device and the front grill or the cover, the deformation limiting member being configured to limit deformation of the front grill or the cover to the radar device side during the collision between the cover and the collision body.

An object of the invention is to provide a semiconductor device and an adjusting method for a semiconductor device wherein power source noises and noises radiated as radio waves can be reduced and power source noises inside the semiconductor device can be cut. The open stub OS1 is formed in the upper wiring layer of the semiconductor device 1. The stub length L1 is set to a length of ¼ of the wavelength of the known frequency containing peak components of noises. The noise receiving part AT1 is disposed adjacent to the open stub OS1. The open stub OS1 is connected to the power source wiring 4 by an interlayer wiring 6. The noise receiving part AT1 is biased to a ground potential. The basic wave component and odd-number harmonic waves of noises that are generated from the PLL circuit 11 and propagate (the arrow Y1 of FIG. 2) in the power source wiring 4 are reflected (arrow Y2 of FIG. 2) by the open stub OS1 so as to return to the PLL circuit 11, and do not reach the filter circuit 12.

The invention discloses a method for calculating accidental E-layer short wave field strength of a mid-latitude region. The method includes the following steps that A, according to position information of a receiving and transmitting point, a great circle distance and a reflecting point position of a short wave link and the electronic cyclotron frequency of the short wave link are calculated, anda radio wave radiation elevation is calculated based on the equivalent theorem; B, depending on a radio wave environment observation station of the science and technology industry of national defense,an ionized layer vertical sounding diagram and an ionized layer inclined sounding diagram of the reflecting point position are obtained; C, if there are no ionized layers foE and foEs which can be directly observed at the reflecting point position, firstly, an MUFEs value of inclined sounding is converted into an foEs value at a middle point of an inclined sounding link; D, according to short wave communication features, occurrence conditions of strong Es are determined, the ionized layer absorption loss of the reflecting point position is calculated, and accordingly the accidental E-layer field strength is worked out. According to method for calculating the accidental E-layer short wave field strength of the mid-latitude region, ionized layer vertical sounding and inclined sounding datacan be comprehensively utilized, and the foEs value of the reflecting point position is worked out.

According to the present invention, provided is a communication apparatus including a radiation source (10) that radiates an electromagnetic wave, and a first phase control plate (11) that is disposed at a position of a distance L₁ in a radio wave radiation direction from the radiation source (10). In the first phase control plate (11), a phase of a transmitted electromagnetic wave differs according to a distance from a representative point on the first phase control plate (11). The radiation source (10) is able to supply power up to a position separated from the representative point on the first phase control plate (11) by L₁/2.

A radar antenna is provided. The radar antenna includes an antenna unit provided with dielectric bodies in a front part thereof in a radio wave radiating direction, a pedestal, a supporting bar attached between the antenna unit and the pedestal to separate the antenna unit from the pedestal, and formed with a hollow section therein, and one of a cable and a waveguide passing through the hollow section and connected with the antenna unit.

The invention discloses a calling method and a calling system for a mobile terminal in a fixed telephone network. The method comprises the following steps that: the fixed telephone network receives a first calling request from the mobile terminal, and forwards the first calling request to a mobile switch center currently visited by the mobile terminal, wherein the first calling request is used for indicating that a calling requesting terminal is a mobile terminal; and the mobile switch center transmits a second calling request to a switch currently visited by a called terminal according to the first calling request so as to establish calling between the mobile terminal and the called terminal. According to the method, communication can be realized for the mobile terminal by using a fixed network, so that the waste of wireless resources and the damage of radio wave radiation to the human body health and the environment are reduced effectively.

Disclosed is a mobile communication wide band antenna that comprises a radio wave radiator for receiving transmission signals and power and radiating radio waves corresponding to the transmission signals; and an operating state display for receiving the radio waves radiated by the radio wave radiator and displaying operating states of the radio wave radiator according to the received radio waves. The radio wave radiator comprises a ground surface for functioning as ground; a radiation element supported by the ground surface to have a first gap from the ground surface and radiating the radio waves; and a microstrip feeder supported by the ground surface, having a second gap and a third gap from the ground surface, and for receiving the transmission signals and the power and having an electromagnetic coupling with the radiation element, the third gap being provided to be located between the ground surface and the radiation element.

A communication apparatus (1) includes a radio wave radiation source (10), a phase control plate (11) disposed near the radio wave radiation source, and a polarization control plate (12) disposed to be substantially parallel to the phase control plate (11). In the phase control plate (11), a phase of a transmitted electromagnetic wave differs according to a distance from a first representative point on the phase control plate (11). In the polarization control plate (12), a polarization state change given to a transmitted electromagnetic wave at a reference point differs according to an angle formed between a representative line connecting a second representative point on the polarization control plate (12) to an edge of the polarization control plate (12), and a reference line connecting the second representative point to the reference point on the polarization control plate (12).

The invention discloses radiation-proof health care tea for a pregnant woman. The radiation-proof health care tea is mainly prepared from 10 parts of milkvetch roots, 5 parts of radix pseudostellariae, 5 parts of radix angelica sinensis, 10 parts of pericarpium citri reticulatae, 10 parts of rhizoma atractylodis macrocephalae, 5 parts of barbary wolfberry fruit, 5 parts of semen ziziphi spinosae and 5 parts of flos chrysanthemi and then obtained after the medicinal materials are packaged with a paper bag. When the radiation-proof health care tea for the pregnant woman is drunk, 20 g of the radiation-proof health care tea is put into 500 milliliters of water to be soaked for 10 minutes and then decocted with slow fire for 30 minutes, and the radiation-proof health care tea can be drunk instead of tea. The radiation-proof health care tea for the pregnant woman has the functions of preventing an influence of computer and radio wave radiation pollution on a circulatory system, an immune system, a reproductive system and a metabolic function of a human body, decreasing the probability of a cancer induced by electromagnetic waves, achieving the radiation protection effect on a fetus in the abdomen and the pregnant woman and decreasing the generation probability of lesions such as pregnant women abortion, sterility and a monster.