Invention Grant
US07800448B2 Doherty amplifier 有权
多赫蒂放大器

  • Patent Title: Doherty amplifier
  • Patent Title (中): 多赫蒂放大器
  • Application No.: US12297036
    Application Date: 2007-04-11
  • Publication No.: US07800448B2
    Publication Date: 2010-09-21
  • Inventor: Igor Blednov
  • Applicant: Igor Blednov
  • Applicant Address: NL Eindhoven
  • Assignee: NXP B.V.
  • Current Assignee: NXP B.V.
  • Current Assignee Address: NL Eindhoven
  • Priority: EP06112675 20060414
  • International Application: PCT/IB2007/051305 WO 20070411
  • International Announcement: WO2007/119208 WO 20071025
  • Main IPC: H03F3/68
  • IPC: H03F3/68
Doherty amplifier
Abstract:
An integrated Doherty amplifier structure comprises an input bond pad (IBP), and an output bond pad (OBP). A first transistor (T1) forms the peak amplifier stage of the Doherty amplifier and has a control input (G1) to receive a first input signal (IS1) being an input signal of the Doherty amplifier, and has an output (D1) to supply an amplified first input signal (OS1) at an output of the Doherty amplifier A second transistor (T2) forms a main amplifier stage of the Doherty amplifier and has a control input (G2) to receive a second input signal (IS2) and has an output (D2) to supply an amplified second input signal (0S2). The first input signal (IS1) and the second input signal (IS2) have a 90° phase offset. A first bond wire (BW1) forms a first inductance (L1), and extends in a first direction, and is arranged between the input bond pad (IBP) and the control input (G1) of the first transistor (T1). A second bond wire (B W2) forms a second inductance (L2), and extends in the first direction, and is arranged between the output bond pad (OBP) and the output (D1) of the first transistor (T1). A third bond wire (B W3) forms a third inductance (L3) and extends in a second direction substantially perpendicular to the first direction, and is arranged between the output (D1) of the first transistor (T1) and the output (D2) of the second transistor (T2).
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