Patent ID: 7911292
Filing Date: 2011-03-22
Classification: H01P

Abstract:
1. A transition circuit for transferring a radio frequency (RF) signal comprising: a low frequency substrate with a first dielectric constant; a RF substrate, with a second dielectric constant different from the first dielectric constant, mounted on the low frequency substrate; a planar transmission line mounted at the RF substrate for receiving a RF signal from a RF signal generating means; a via disposed inside the RF substrate and connected to one side of the planar transmission line for receiving the RF signal from the planar transmission line; at least one metal patch disposed inside the RF substrate and connected to the one side of the via for receiving the RF signal from the via; and a hole disposed inside the low frequency substrate and connected to one side of the at least one metal patch for receiving the RF signal from the at least one metal patch, wherein the low frequency substrate is a material having a large dielectric loss, and the RF substrate is a material having a small dielectric loss.