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Impedance control unit, balun unit, electronic device and Doherty amplifier

A technology of impedance control and components, applied to amplifiers, amplifiers, radio frequency amplifiers with semiconductor devices/discharge tubes, etc., can solve the problem that the impedance of odd mode and even mode cannot be independently controlled

Pending Publication Date: 2020-06-26
AMPLEON NETHERLANDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The disadvantage of this known technical solution is that the impedances of the odd and even modes cannot be independently controlled in a simple manner

Method used

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  • Impedance control unit, balun unit, electronic device and Doherty amplifier
  • Impedance control unit, balun unit, electronic device and Doherty amplifier
  • Impedance control unit, balun unit, electronic device and Doherty amplifier

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Embodiment Construction

[0062] Figure 4A and Figure 4B are shown respectively Figure 2A and Figure 2B A top view of the coupled lines in . Therein, the strips 13A, 13B each have a width w0 and are separated by a distance s, where s >> h1 . The ground plane 15, the intermediate plane 14 and the strips 13A, 13B all extend a length l. The median plane 14 extends laterally beyond the strips 13A, 13B. In other words, the width w1 of the intermediate plane 14 is greater than 2w0+s. The ground plane 15 extends laterally beyond the intermediate plane 14 . More specifically, the width w2 of the ground plane 15 is greater than w1. The strips 13A, 13B, the intermediate plane 14 and the ground plane 15 are arranged symmetrically with respect to the line of symmetry A' which runs along the length of the coupling line.

[0063] Figure 5A and Figure 5B respectively show the corresponding Figure 2A and Figure 2B A cross-sectional view of an embodiment of an impedance-controlled unit according to ...

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Abstract

The present invention relates to an impedance control unit. The present invention further relates to a balun unit, an electronic device, and a Doherty amplifier, each comprising the impedance controlunit. The invention proposes an impedance control unit, comprising a pair of re-entrant type coupled lines, that is characterized in that it comprises an electrical short between the intermediate plane and the ground plane arranged locally inside the pair of coupled lines.

Description

technical field [0001] The invention relates to an impedance control unit. The invention also relates to a balun unit, an electronic device and a Doherty amplifier, each comprising said impedance control unit. Background technique [0002] Push-pull amplifiers are well known in the art. These amplifiers include a pair of amplifier elements, such as transistors, in which an input signal supplied to one amplifying element is phase-shifted by 180 degrees with respect to an input signal supplied to the other amplifying element. The output of the amplifying element is fed into a balun, which converts the differential signal to a single-ended output signal. [0003] In the radio frequency (RF) domain (eg, between 0.1 GHz and 100 GHz), baluns are typically implemented using electromagnetically coupled transmission lines. For example, baluns use pairs of edge-coupled or broadside-coupled lines. [0004] An important performance parameter for a balun is the bandwidth at which it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/32H03H11/28
CPCH03H11/28H03H11/32H01P5/028H01P5/10H03F1/0288H03F1/565H03F3/193H03F3/211H03F3/2176H03F3/2178H03F3/3001H03F2200/09H03F2200/387H03F2200/451H03F1/56H03F3/195H03F2200/294H03F2200/372
Inventor 周蕾约翰·加亚德哈森
Owner AMPLEON NETHERLANDS