Patent ID: 6028748
Filing Date: 2000-02-22
Classification: G11B

Abstract:
A magnetic head unit comprising:a thin film magnetic sensor faced to a magnetic recording medium for detecting a magnetic impedance which varies according to variations of magnetic flux of a signal magnetization of said magnetic recording medium;a magnetic head slider including said thin film magnetic sensor;a high-frequency signal generator for supplying a predetermined high-frequency signal to said thin film magnetic sensor, anda head suspension for suspending said magnetic head slider and said high-frequency signal generator, said head suspension including an inorganic dielectric substrate, a signal line and a grounded plate, said grounded plate having high electrical conductivity and being located on one surface of said inorganic dielectric substrate so as to be opposed to said signal line located on an opposite surface of said inorganic dielectric substrate, said signal line, inorganic dielectric substrate and grounded plate substantially forming a matching microstrip transmission line of one-fourth wavelength of said high-frequency signal for transmitting said high-frequency signal representative of said magnetic impedance variation detected by said thin film magnetic sensor.