Electronic substrate

Details Electronic substrate Electronic substrate

2007-06-12

2007-06-12

Thai, Luan (Department: 2891)

Active solid-state devices (e.g., transistors, solid-state diode

Transmission line lead

C257S662000, C257S663000, C257S665000, C257SE23174

Reexamination Certificate

active

11097239

ABSTRACT:
A substrate for mounting a device is disclosed. The substrate includes at least one transition for providing an RF connection to a lead of the device, the lead extending from a device input to an otherwise free end. The transition comprises two spaced apart electrically coupled members, the first member occupying at least the same area on a top surface of the substrate as the device lead to which it is to connect, and the second member lying in register with the first member. The transition comprises an input, which is located at the end of the second member which is nearest the free end of the device lead and an output which is located at the opposite end of the first member and which is in register with the device input. The electrical characteristics of the transition are such that the electrical length from the input of the transition to the output of the transition is approximately equal to one half of a wavelength over a given operating frequency band of the device.

REFERENCES:
patent: 5170235 (1992-12-01), Tanino
patent: 5852391 (1998-12-01), Watanabe et al.
patent: 5945700 (1999-08-01), Mizutani
patent: 6757523 (2004-06-01), Fry
patent: 7139538 (2006-11-01), Ono et al.
patent: 7193472 (2007-03-01), Gotou et al.
patent: 2004/0145034 (2004-07-01), Fujioka et al.

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