Patent ID: 6181278
Filing Date: 2001-01-30
Classification: H01L,H01Q

Abstract:
An antenna-integral high frequency circuit comprising:a first conductor layer provided with a microstrip antenna;a second conductor layer including a first grounding portion provided with a first slot-coupling hole;a third conductor layer including a feeder circuit electromagnetically coupled with said microstrip antenna via said first slot coupling hole, and a second grounding portion physically separated from the feeder circuit;a semiconductor device including a fourth conductor layer having an input/output terminal portion connected to said feeder circuit and a third grounding portion connected to said second grounding portion so that the third grounding portion is physically separated from the terminal portion, and a high frequency circuit having said fourth conductor layer on a surface thereof;a first dielectric substrate deposited between said first and second conductor layers;a second dielectric substrate deposited between said second and third conductor layers; and a first connecting portion provided to connect said first grounding portion and said second grounding portion such that a distance from said first grounding portion to said third grounding portion is less than one fourth of a wavelength associated with said high frequency circuit.