Claims
- 1. A balanced-to-unbalanced converting circuit comprising:
- a multi-layered substrate including an outermost printed circuit layer, a first grounded conductor layer and a second printed circuit layer sandwiched such that the first grounded conductor layer is located between the outermost printed circuit layer and the second printed circuit layer;
- a balanced circuit mounted on the outermost printed circuit layer;
- an unbalanced circuit mounted on the outermost printed circuit layer; and
- a balanced-to-unbalanced converter connected between the balanced circuit and the unbalanced circuit;
- wherein the balanced-to-unbalanced converter includes a stripline formed by a foil pattern formed on the second printed circuit layer, and by the first grounded conductor layer; and
- wherein the foil pattern is connected to the balanced circuit and the unbalanced circuit through openings formed in the first grounded conductor layer.
- 2. The balanced-to-unbalanced converting circuit according to claim 1, further comprising:
- a second balanced-to-unbalanced converter including a second stripline formed by a second foil pattern formed on the second printed circuit layer, and the first grounded conductor layer;
- wherein the second foil pattern is connected to the balanced circuit through second openings formed in the first grounded conductor layer.
- 3. The balanced-to-unbalanced converting circuit according to claim 1, further comprising:
- a second grounded conductor layer and a third printed circuit layer such that the second grounded conductor layer is located between the second and third printed circuit layers;
- a second balanced-to-unbalanced converter including a second stripline formed by a second foil pattern formed on the third printed circuit layer, and by the second grounded conductor layer;
- wherein the second foil pattern is connected to the balanced circuit through second openings formed in the first grounded conductor layer, the second printed circuit layer, and the second grounded conductor layer.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6-285940 |
Oct 1994 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/538,312, filed Oct. 3, 1995, now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
Country |
Parent |
538312 |
Oct 1995 |
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