Title:
送信装置及びその制御方法
Document Type and Number:
Japanese Patent JP5725027
Kind Code:
B2
Abstract:
A transmitter (100) according to the present invention includes an RF signal generator (1a) and a current mode class-D amplifier (2a). The RF signal generator (1a) divides an input radio signal into an amplitude signal (r(t)) and a rectangular phase signal (Rth(t)) and outputs the amplitude signal and the rectangular phase signal. The current mode class-D amplifier (2a) amplifies the radio signal with the amplitude signal (r(t)) and the rectangular phase signal (Rth(t)). The current mode class-D amplifier (2a) includes variable current sources (21, 22) that are controlled by the amplitude signal (r(t)) and supply a current to the current mode class-D amplifier (2a). The current mode class-D amplifier (2a) includes switching elements (23, 24) that connect the variable current sources (21, 22) to one of a terminal connected a ground potential GND and an output terminal according to the rectangular phase signal (Rth(t)).
Inventors:
Shinichi Hori
Application Number:
JP2012527563A
Publication Date:
May 27, 2015
Filing Date:
April 26, 2011
Export Citation:
Assignee:
NEC
International Classes:
H03F1/06; H03F3/217; H03F3/24; H04B1/04
Domestic Patent References:
| JP2010141521A | 2010-06-24 | |||
| JPH01254014A | 1989-10-11 | |||
| JP2010141521A | 2010-06-24 | |||
| JPH01254014A | 1989-10-11 |
Foreign References:
| WO2008093665A1 | 2008-08-07 | |||
| WO2008093665A1 | 2008-08-07 |
Attorney, Agent or Firm:
Ken Ieiri