Title:
TRANSMITTER
Document Type and Number:
Japanese Patent JP2001094532
Kind Code:
A
Abstract:
To provide a transmitter which can reduce leakage electric power outside a band with simple constitution at low cost.
Band-pass filters 1B and 1C are prepared which reduce the leakage electric power on one side of an adjacent channel 1A and those band- pass filters 1A, 1B, and 1C are selected with a switch 2 according to the use state of adjacent frequencies. Consequently, the electric power leaking to an adjacent channel currently in use can effectively be reduced or the total cost of the band-pass filters is reducible.
Inventors:
MOCHIZUKI TAKASHI
Application Number:
JP26793499A
Publication Date:
April 06, 2001
Filing Date:
September 22, 1999
Export Citation:
Assignee:
NEC CORP
International Classes:
H04J13/00; H04B1/04; H04B1/10; H04B15/00; (IPC1-7): H04J13/00
Attorney, Agent or Firm:
Yanagi Kawa Shin