Title:
ＴＸドライバ増幅器の中で生成されるスプリアス高調波の抑制
Document Type and Number:
Japanese Patent JP6416253
Kind Code:
B2
Abstract:
The transmission path of a communication device includes, in part, N upconverters each of which receives M phases of a signal to be transmitted. Each upconverter further receives one of N sets of phases of a LO signal. Each of the N sets includes M phases of the LO signal. The communication device further includes at least one combiner, and N amplifiers each responsive to a different one of the N upconverters to generate N amplified signals. The combiner combines the N amplified signals to generate an output signal. By selecting the gain of one of the amplifiers to be different than the gain of the remaining amplifiers, the undesired harmonics of the signal to be transmitted, caused by non-linearity of the amplifiers, is reduced. Each upconverter optionally includes a multitude of upconverters whose outputs are combined to further reduce the spurious harmonic upconversion products and the counter-intermodulation distortion (IM3).
Inventors:
Bora, Samia Basantral
Lau, Win Fat Andy
Lau, Win Fat Andy
Application Number:
JP2016529795A
Publication Date:
October 31, 2018
Filing Date:
July 18, 2014
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H03F1/32; H03D7/00; H03F3/24; H03F3/68; H04B1/04
Domestic Patent References:
| JP2012510239A |
Foreign References:
| WO2010089700A1 | ||||
| WO2006063358A1 | ||||
| WO2012168379A1 | ||||
| US20090143031 | ||||
| US20060205370 |
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Morisezo Iseki
Okumura Motohiro
Yoshihiro Fukuhara
Morisezo Iseki
Okumura Motohiro
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