Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HIGH-FREQUENCY DEVICE AND MOBILE WIRELESS UNIT USING THE SAME
Document Type and Number:
Japanese Patent JP2001244710
Kind Code:
A
Abstract:

To provide a small-sized high frequency device.

A distributed constant line 103, whose electrical length is shorter than the quarter wavelength and that is branched into two ways from an input terminal 102 is employed for wiring used for the high-frequency device and a capacitive element 105 is connected to the distributed constant line 103. Even when the line length of the distributed constant line 103 is shorter than quarter wavelength, by adding the parallel capacitive element 105 to the distributed constant line 103 becomes about quarter wavelength is obtained in terms of the electrical length, so as to make the high frequency device small in size.


More Like This:
JP2003258435SHEET MATERIAL FOR WIRING BOARD AND MULTILAYERED WIRING BOARD
JP3327714[Title of Invention] Noise Countermeasure CPU Device and CPU Noise Countermeasure Method
Inventors:
YOSHIDA ISAO
KATSUEDA MINEO
SEKINE KENJI
NAGATA MINORU
Application Number:
JP2000393740A
Publication Date:
September 07, 2001
Filing Date:
December 19, 1994
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI LTD
International Classes:
H01L23/14; H01P5/12; H01P5/19; H03F3/60; H01L23/12; (IPC1-7): H01P5/12; H01L23/12; H01L23/14; H01P5/19; H03F3/60
Attorney, Agent or Firm:
Akita Aki



 
Previous Patent: LUMPED CONSTANT TYPE IRREVERSIBLE CIRCUIT COMPONENT

Next Patent: CONNECTION METHOD FOR CIRCUIT BOARD AND MICROWAVE POWER COMBINING AMPLIFIER USING THE SAME