Millimeter Wave E-Plane Transition From Waveguide to Microstrip Line With Large Substrate Size Related to MMIC Integration
Millimeter Wave E-Plane Transition From Waveguide to Microstrip Line With Large Substrate Size Related to MMIC Integration
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DOI：
10.1109/lmwc.2016.2574995
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发表时间：
2016-06
影响因子：
3
通讯作者：
A. Zaman;V. Vassilev;P. Kildal;H. Zirath
中科院分区：
文献类型：
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作者：
A. Zaman;V. Vassilev;P. Kildal;H. Zirath
这封信展示了一种封装概念，其中波导到微带的过渡可以在任意尺寸的毫米波MMIC上吸收，从而避免在MMIC电路的高频端口使用键合线。所提出的概念的优点是-它不需要额外的衬底与亚临界尺寸的波导到微带过渡。转换可以集成到MMIC上，因此MMIC可以直接耦合到波导上。完美磁导体（PMC）表面用于抑制不必要的波导模式耦合到超大电路腔。测量到的背靠背转换工作在66-98 GHz频段（相对BW为38%），最小回波损耗为12.7 dB。制造的原型的总插入损耗为3.26 dB，其中还包括氧化铝衬底上的14.8 mm长的微带线。单次转换的损耗在0.25到0.42 dB之间变化。
This letter demonstrates a packaging concept where a waveguide-to-microstrip transition can be assimilated on a mm-wave MMIC of an arbitrary size and thus avoid the use of bond wires at the high frequency ports of the MMIC circuit. The advantage of the proposed concept is that- it does not require an extra substrate with sub-critical dimensions for the waveguide-to-microstrip transition. The transition can be integrated onto the MMIC, and thus the MMIC can be coupled directly to the waveguide. A Perfect Magnetic Conductor (PMC) surface is used to suppress the unwanted waveguide mode coupling to the oversized circuit cavity. The measured back-to-back transition works over the frequency band 66-98 GHz (relative BW of 38%) with minimum return loss of 12.7 dB. The total insertion loss of the manufactured prototype is found to be 3.26 dB, which also includes a 14.8 mm long microstrip line on an Alumina substrate. The losses in a single transition vary between 0.25 and 0.42 dB.