摘要:
A housing antenna 20 includes a first conductor section 7, a ground conductor section 9, and a first power supply section 2. The first conductor section 7 is a ground plane of an upper housing of a flip-type telephone. The ground conductor section 9 is a ground plane of a lower housing of the flip-type telephone. A ¼ wavelength one-end-short-circuited patch antenna 30 includes the first conductor section 7, a second conductor section 8, a short-circuit conductor section 10, and a second power supply section 3. The first power supply section 2 is a power supply section of the housing antenna 20. The second power supply section 3 is a power supply section of the ¼ wavelength one-end-short-circuited patch antenna 30. The first and the second power supply sections 2 and 3 are connected to a wireless communication circuit 4, thereby enabling wireless communication.
摘要:
An antenna element includes: a first conductive plate which is approximately rectangular; a second conductive plate which shares one side of the first conductive plate in the width direction, which is placed substantially perpendicularly to the first conductive plate, and which is approximately rectangular; a third conductive plate which shares another side of the second conductive plate in the width direction, the other side being opposed to the one side shared with the first conductive plate, which is placed perpendicularly to be opposed to the first conductive plate, and which is approximately rectangular; a fourth conductive plate which shares one sides of the first conductive plate, the second conductive plate, and the third conductive plate; a sixth conductive plate which extends from one side of the fourth conductive plate that does not share one sides of the first conductive plate, the second conductive plate, and the third conductive plate, and which is placed substantially perpendicularly to the fourth conductive plate; slits which are disposed respectively between the sixth conductive plate, and the first conductive plate and the third conductive plate; a short pin which connects the ground plate to the first conductive plate or the second conductive plate; and a feed pin which is connected to the first conductive plate or the second conductive plate in parallel to the short pin and in adjacent to the short pin.
摘要:
A housing antenna is small enough in size so as to be accommodated in a mobile device. The antenna has a number of feeding points that allow the antenna to operate as a number of antennal elements. The antenna is capable of realizing high-speed communication by increasing communication capacity.
摘要:
A folding dipole antenna having remarkably multi-band characteristics as compared with prior art. Element width at the short portions (12d, 11d) of any one of an upper element (12) or a lower element (11) is set wider than that of the other element, and the element width at the long part of the upper element (12) or the lower element (11) on the feed side is set wider than that of the element on the non-feed side.
摘要:
A housing antenna 20 includes a first conductor section 7, a ground conductor section 9, and a first power supply section 2. The first conductor section 7 is a ground plane of the upper casing of a flip-type telephone. The ground conductor section 9 is a ground plane of the lower housing of the flip type telephone. The half-wavelength slot antenna 30 includes a first conductor section 7, a second conductor section 8, three short-circuit conductor sections 10-12, and a second power supply section 3. The first power supply section 2 is a power supply section for the housing antenna 20. The second power supply section 3 is a power supply section for the half-wavelength slot antenna 30. The first and the second power supply sections 2 and 3 are connected to a wireless communication circuit 4 and allow a wireless communication.
摘要:
A housing antenna is small enough in size so as to be accommodated in a mobile device. The antenna has a number of feeding points that allow the antenna to operate as a number of antenna elements. The antenna is capable of realizing high speed communication by increasing communication capacity.
摘要:
A controller of a MIMO antenna apparatus calculates a current transmission capacity based on signal levels detected by a signal level detector circuit. The controller calculates an estimated transmission capacity assuming that at least one of antenna elements currently connected to a MIMO modulator and demodulator circuit is changed to a further antenna element not connected to the MIMO modulator and demodulator circuit, based on the detected signal levels and degrees of electromagnetic coupling stored in a degree-of-coupling memory. The controller controls a switch circuit to connect the further antenna element to the MIMO modulator and demodulator circuit when the current transmission capacity becomes lower than the estimated transmission capacity.
摘要:
Provided is an antenna device having excellent antenna characteristics at desired frequencies by suppressing influences to a human body and the like to minimum. In the device, a power feeding section (102) is arranged on a ground plate (101). An antenna element (103) has a section (112) to be fed with power supplied from the power feeding section (102), a grounding section (111) grounded to the ground plate (101), and a main body section (113) formed by making the surfaces of a conductive plate face each other by folding the conductive plate midway. The section (112) to be fed with power and the grounding section (111) form a reverse F-shape by being connected to the main body section (113), and are arranged at an end portion of the ground plate (101).
摘要:
An array antenna apparatus includes a first feeding element having a first feed point, a second feeding element having a second feed point, and a first parasitic element electrically connected to the respective first and second feeding elements. In a first frequency band, respective resonances in the feeding elements occur independent of each other, by eliminating electromagnetic mutual coupling between the feeding elements, and exciting the first feeding element through the first feed point as well as exciting the second feeding element through the second feed point. In a second frequency band lower than the first frequency band, a loop antenna having a certain electrical length is formed by the first and second feeding elements and the first parasitic element, and a resonance of the loop antenna substantially occurs by exciting the first feeding element through the first feed point.
摘要:
A radio base station capable of performing an optimum scheduling suitable for an outside situation. The radio base station, which has a scheduling table (125) in which it is designated what scheduling should be performed, temporally and dynamically changes scheduling methods to be used by a scheduling pattern selecting part (124), based on outside information (disaster situation, traffic situation, weather information, event information, etc.) determined by a intra-cell environment determining part (122) and also based on a request packet ratio from a request ratio determining part (123). In this way, an optimum scheduling can be performed in accordance with the latest situation in the cell.