公开(公告)号：US20150102389A1

公开(公告)日：2015-04-16

申请号：US14051998

申请日：2013-10-11

Applicant: RF Micro Devices, Inc.

Inventor： Brian G. Moser ,  Robert Saxer ,  Jing Zhang

IPC: H01L29/737 ,  H01L29/10

CPC classification number: H01L29/7371 ,  H01L29/0692 ,  H01L29/0813 ,  H01L29/0817 ,  H01L29/0826 ,  H01L29/42304

Abstract: A heterojunction bipolar transistor includes a base mesa, an emitter assembly formed over the base mesa, and a base contact. The emitter assembly includes multiple circular sectors. Each circular sector is spaced apart from one another such that a sector gap is formed between radial sides of adjacent circular sectors. The base contact, which is formed over the base mesa, has a central portion and multiple radial members. Each radial member extends outward from the central portion of the base contact along a corresponding sector gap. As such, each of the circular sectors of the emitter assembly is separated by a radial member of the base contact. The number of circular sectors may vary from one embodiment to another. For example, the emitter assembly may have three, four, six, or more circular sectors.

Abstract translation: 异质结双极晶体管包括基底台面，形成在基台面上的发射体组件和基底触点。 发射器组件包括多个圆形扇形。 每个圆形扇形体彼此间隔开，使得在相邻圆形扇形体的径向侧面之间形成扇形间隙。 形成在基台面上的基部接触件具有中心部分和多个径向部件。 每个径向构件沿着对应的扇形间隙从基座的中心部分向外延伸。 因此，发射器组件的每个圆形扇区由基部触点的径向构件分开。 圆形扇区的数量可以从一个实施例变化到另一个实施例。 例如，发射器组件可以具有三个，四个，六个或更多个圆形扇形。

公开(公告)号：US08994075B1

公开(公告)日：2015-03-31

申请号：US14051998

申请日：2013-10-11

Applicant: RF Micro Devices, Inc.

Inventor： Brian G. Moser ,  Robert Saxer ,  Jing Zhang

IPC: H01L31/0328 ,  H01L31/0336 ,  H01L31/072 ,  H01L31/109 ,  H01L29/737 ,  H01L29/10

CPC classification number: H01L29/7371 ,  H01L29/0692 ,  H01L29/0813 ,  H01L29/0817 ,  H01L29/0826 ,  H01L29/42304

Abstract: A heterojunction bipolar transistor includes a base mesa, an emitter assembly formed over the base mesa, and a base contact. The emitter assembly includes multiple circular sectors. Each circular sector is spaced apart from one another such that a sector gap is formed between radial sides of adjacent circular sectors. The base contact, which is formed over the base mesa, has a central portion and multiple radial members. Each radial member extends outward from the central portion of the base contact along a corresponding sector gap. As such, each of the circular sectors of the emitter assembly is separated by a radial member of the base contact. The number of circular sectors may vary from one embodiment to another. For example, the emitter assembly may have three, four, six, or more circular sectors.

Abstract translation: 异质结双极晶体管包括基底台面，形成在基台面上的发射体组件和基底触点。 发射器组件包括多个圆形扇形。 每个圆形扇形体彼此间隔开，使得在相邻圆形扇形体的径向侧面之间形成扇形间隙。 形成在基台面上的基部接触件具有中心部分和多个径向部件。 每个径向构件沿着对应的扇形间隙从基座的中心部分向外延伸。 因此，发射器组件的每个圆形扇区由基部触点的径向构件分开。 圆形扇区的数量可以从一个实施例变化到另一个实施例。 例如，发射器组件可以具有三个，四个，六个或更多个圆形扇形。