51results about How to "Excellent high-frequency characteristic" patented technology

An electrical connector (100) has a first end for fitting with another connector and a second end for connecting to a board. The connector comprises an insulative housing (1), a number of contacts (2) and a metal shield (3) enclosing the insulative housing. The insulative housing includes a tongue plate (11) with a number of passageways (110) defined therein for receiving the contacts. The contacts are arranged side by side in the first end and arranged in three parallel rows in the second end. The contacts include signal contact pairs (21) and grounding contacts (22) disposed adjacent to and separating the signal contact pairs. Each signal contact pair includes a first signal contact and a second signal contact being substantially in equal length of the first signal contact. The signal contact pairs have matched impedance for transmitting high-speed signals, thereby canceling any cross talk therebetween.

A high frequency circuit module is provided with: a multilayer circuit substrate; a first high frequency switch that switches connection of an antenna; a transmission filter; and reception filters. Either the transmission filter or the reception filters, or both, and the first high frequency switch are embedded in the multilayer circuit substrate, and ground conductors are formed in a conductive layer facing embedded electronic components.

Disclosed herein is a common mode filter that includes a winding core part and first and second wires wound in a same direction around the winding core part. The first and second wires constitute a first winding block on one endmost side in an axial direction of the winding core part, a second winding block on other endmost side in the axial direction of the winding core part, and a third winding block positioned between the first and second winding blocks. The second winding block is a winding block at an odd-numbered position counted from the first winding block. The first and second wires cross each other in an area between the first and third winding blocks and in an area between the second and third winding blocks.

In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, and support member 23. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 23 is constituted by a part of the housing or by a separate member, and supports the vibration plate 11 in multiple areas along the periphery 111. The electroacoustic transducer can offer excellent high-frequency characteristics.