Method for adjusting characteristic of high-frequency circuit

Abstract

Abstract PURPOSE:To facilitate adjustment and to make the size of a product small by arranging a dielectric chip selected among dielectric chips with different specific dielectric constant, shape and size or the like on or in the vicinity of a microstrip line. CONSTITUTION:The electric length of the microstrip line 3 is 11 and the line 3 has a cut part 3a cut off in terms of DC and coupled electromagnetically and a stub 5 of an electric length 12 is formed on the way of the line 3, in a high frequency circuit where an oscillation FET 1 and an output terminal 4 in an oscillation circuit are connected by the microstrip line 3. Then a dielectric chip 6 for adjusting the characteristic is placed to the tip of the stub 5 and bonded by a method such as grazing. In adjusting the transmission characteristic or the like, lots of dielectric chips with different specific dielectric constant, shape and size are prepared and the dielectric chip is on the stub 5 while its characteristic is being measured and the chip is bonded to the position when a desired characteristic is obtained.

Inventors

• 👤 Yuji Kuroda
• 👤 Sukenobu Nishimura
• 👤 Masato Oki

Bibliographic Details