1
Fujimoto Kyohei, Hiroi Yoshiyasu: Folded integrated antenna and amplifier. Matsushita Electric Industrial, November 23, 1971: US3622890 (81 worldwide citation)

An integrated antenna system comprising a ground plane, at least one vertical element substantially perpendicular to the ground plane, a helically shaped element having horizontal polarization and a solid state circuit located at the junction of the horizontal and vertical elements. The described an ...


2
Haruki Hiroshi, Hiroi Yoshiyasu, Fujimoto Kyohei: Receiving loop antenna system. Matsushita Electric Industrial, Burgess Ryan and Wayne, November 4, 1975: US3918062 (35 worldwide citation)

In a receiving loop antenna especially adapted for use as a built-in antenna of a portable wireless set and of the type wherein the antenna output terminals are so tapped that power matching impedance of the wireless set may be attained, a circuit having series resonant circuit characteristics and a ...


3
Fujimoto Kyohei, Suyama Nobuyuki, Hiroi Yoshiyasu, Ito Hideo, Haruki Hiroshi, Ogawa Takao, Kobayashi Tsutomu: Diverse type dipole antennas on common mount. Matsushita Electric Industrial, Stevens Davis Miller & Mosher, April 16, 1974: US3805269 (6 worldwide citation)

An antenna means comprising a linear element of a conductor having a length sufficiently shorter than a half wavelength and a plurality of parallel two-wire type distributed constants transmission lines short-circuited at the free end thereof, said transmission lines being sequentially arranged alon ...


4

5

6
Hoshino Kazuki, Nakanishi Tetsuaki, Kunitomo Koichi, Hiroi Yoshiyasu, Omori Eiji: Portable telephone system. Matsushita Electric, June 25, 1993: JP1993-160768

PURPOSE: To provide a portable telephone system in which a power amplifier of a power amplification booster is operated in a suitable state when the portable telephone set is connected to the power amplification booster so as to implement the transmission of multistage changeover with the same stand ...


7
Hoshino Kazuki, Nakanishi Tetsuaki, Kunitomo Koichi, Hiroi Yoshiyasu, Omori Eiji: Portable telephone system. Matsushita Electric, June 25, 1993: JP1993-160769

PURPOSE: To provide a portable telephone system in which a power amplifier of a power amplification booster is operated in a suitable state when the por table telephone set is connected to the power amplification booster so as to implement the transmission of multistage changeover with the same stan ...


8
Hoshino Kazuki, Nakanishi Tetsuaki, Kunitomo Koichi, Hiroi Yoshiyasu, Omori Eiji: Portable telephone system. Matsushita Electric, June 25, 1993: JP1993-160770

PURPOSE: To provide a portable telephone system in which a power amplifier of a power amplification booster is operated in a suitable state when the portable telephone set is connected to the power amplification booster so as to implement the transmission of multistage changeover with the same stand ...


9
Hoshino Kazuki, Nakanishi Tetsuaki, Kunitomo Koichi, Hiroi Yoshiyasu, Omori Eiji: Portable telephone system. Matsushita Electric, June 25, 1993: JP1993-160771

PURPOSE: To provide a portable telephone system in which a power amplifier of a power amplification booster is operated in a suitable state when the portable telephone set is connected to the power amplification booster so as to implement the transmission of multistage changeover with the same stand ...


10
Hoshino Kazuki, Nakanishi Tetsuaki, Kunitomo Koichi, Hiroi Yoshiyasu, Omori Eiji: Portable telephone system. Matsushita Electric, June 25, 1993: JP1993-160772

PURPOSE: To provide a portable telephone system in which a power amplifier of a power amplification booster is operated in a suitable state when the portable telephone set is connected to the power amplification booster so as to implement the transmission of multistage changeover with the same stand ...