Inventor

NAGATSU TATSUYA

JP4 patents

Patents

4 patents

US5724050AMar 3, 1998

Linear-circular polarizer having tapered polarization structures

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations91

US6970140B2Nov 29, 2005

Antenna apparatus and portable apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations82

US5760660AJun 2, 1998

Orthogonal polarized wave branching filter and its manufacturing method

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD17 citations82

US5937509AAug 17, 1999

Method of manufacturing linear-circular polarizer

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations72