Title:
CDMA COMMUNICATION EQUIPMENT AND ITS AUTOMATIC GAIN CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JP2000252868
Kind Code:
A
Abstract:
To reduce circuit scale and to decrease power consumption by limiting a dynamic range of each circuit configuring a reception system of equipment, especially for each circuit after a secondary demodulation section so as to reduce the required number of bits.
This CDMA communication unit is provided with a 1st AGC circuit 18, that properly keeps a signal level of a received digital signal outputted from an A/D converter 14, and additionally, with a 2nd AGC circuit 19. The input signal lever to a correlator 16 is variable controlled on the basis of an output signal level of a digital filter 15, so as to keep an input signal level to the correlator 16 at a proper value by the 2nd AGC circuit 19.
Inventors:
OGURA MIYUKI
SAITO SHIGETOSHI
ASANUMA YUTAKA
TAKAHASHI HIDEHIRO
OGURA KOJI
MUKAI MANABU
SAITO SHIGETOSHI
ASANUMA YUTAKA
TAKAHASHI HIDEHIRO
OGURA KOJI
MUKAI MANABU
Application Number:
JP5303699A
Publication Date:
September 14, 2000
Filing Date:
March 01, 1999
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H03G3/20; H03G3/30; H04B1/707; (IPC1-7): H04B1/707; H03G3/20; H03G3/30
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)