NIPPON ANTENA KABUSHIKI KAISHA Patent applications |
Patent application number | Title | Published |
20120326934 | ANTENNA APPARATUS - An antenna apparatus that can suppress sensitivity degradation as much as possible to receive AM broadcasts and FM broadcasts even if an antenna height is decreased to 70 mm or less. An antenna board is vertically mounted on a planar antenna base, and a top portion is disposed to stride over the antenna board. An antenna element includes the top portion and an antenna pattern formed on the antenna board. A distance between the antenna base and a lower edge of the top portion is not less than 10 mm, and the lower edge of the top portion is bent downward. The top portion is configured such that an antenna capacitance of the antenna element becomes about 3 pF or more. A received signal from the antenna element is guided to an amplifier board through a connecting wire and amplified. An antenna case is fitted in the antenna base. | 12-27-2012 |
20110279342 | WIDEBAND ANTENNA HAVING A BLOCKING BAND - A wideband antenna including a ground element, and an antenna body provided on the ground element with a predetermined distance. The antenna body includes a feed element and a dielectric substrate, wherein an annular passive element is provided on the top surface of the dielectric substrate with a predetermined gap from the feed element. A plural short-circuit pins are equally spaced on the outer periphery of the passive element, whereby the passive element and the ground element | 11-17-2011 |
20100265147 | ANTENNA APPARATUS - An antenna apparatus that can suppress sensitivity degradation as much as possible to receive AM broadcasts and FM broadcasts even if an antenna height is decreased to 70 mm or less. An antenna board is vertically mounted on a planar antenna base, and a top portion is disposed to stride over the antenna board. An antenna element includes the top portion and an antenna pattern formed on the antenna board. A distance between the antenna base and a lower edge of the top portion is not less than 10 mm, and the lower edge of the top portion is bent downward. The top portion is configured such that an antenna capacitance of the antenna element becomes about 3 pF or more. A received signal from the antenna element is guided to an amplifier board through a connecting wire and amplified. An antenna case is fitted in the antenna base. | 10-21-2010 |
20100103050 | DUAL-BAND ANTENNA - The present invention provides a dual-band antenna that can be operated at two frequencies without providing the choke coil. A first element operated in a high-frequency-side band is formed in a surface of a print board using a print pattern. A second element operated in a low-frequency-side band is formed in an upper portion of a rear surface of the print board so as not to overlap the first element. A power is fed to the first element from a power feeding point located at a lower end of the print board, and the power is fed to the second element through a throughhole made in a middle of the first element. The power is fed to the second element from the throughhole through a long and thin power feeding line, and the power feeding line exhibits a high impedance to a high frequency. A slit is formed in the first element corresponding to the power feeding line. | 04-29-2010 |
20100013724 | ANTENNA APPARATUS - Good electric characteristics are obtained even after an antenna being further incorporated into an antenna apparatus including an antenna case having a limited space. | 01-21-2010 |
20100001910 | On-Vehicle Antenna - No coupled effects occur even when a plurality of antennas is provided. An insert fitting | 01-07-2010 |
20090284441 | Multiple Frequency Antenna - A helical element, which is operated in the frequency band of FM broadcast, is wound around the outer periphery of a rod-shaped support member | 11-19-2009 |
20090207084 | Antenna Apparatus - Even though an antenna apparatus is low profile to have a height of not more than 70 mm, sensitivity is maximally suppressed from being deteriorated. | 08-20-2009 |