Title:
2つのスペクトル拡散周波数帯を有するデュアルモード無線装置
Document Type and Number:
Japanese Patent JP3692140
Kind Code:
B2
Abstract:
The invention provides a dual-band spread-spectrum modulator (101, 103, 105) which uses a single, relatively narrow, synthesizer to serve two operating frequency bands (102, 104). In the lower frequency band, the synthesizer may operate in a high-side injection mode, while in the higher frequency range, the synthesizer may operate in a low-side injection mode. In a preferred embodiment, the lower frequency range may comprise about 1850 to 1990 megahertz, while the higher frequency range may comprise about 2400 to 2483.5 megahertz.
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Inventors:
Dixon, Robert Sea
Vanderpool Jeffrey S
Vanderpool Jeffrey S
Application Number:
JP51332595A
Publication Date:
September 07, 2005
Filing Date:
October 31, 1994
Export Citation:
Assignee:
OMNIPOINT CORPORATION
International Classes:
H04B1/40; H04B1/69; H04B7/26; H04J13/00; H04L1/00; H04L27/12; H04Q7/32; (IPC1-7): H04B1/707
Domestic Patent References:
| JP57157650A | ||||
| JP4237228A |
Foreign References:
| DE3627045A1 |
Attorney, Agent or Firm:
Aoyama Aoi
Osamu Kawamiya
Masahiro Ishino
Osamu Kawamiya
Masahiro Ishino