Claims
- 1. A balanced type filter comprising at least one balanced type terminal, wherein at least one predetermined reactance element is connected between said balanced type terminal and another terminal.
- 2. The balanced type filter according to claim 1, wherein said another terminal is a balanced type terminal.
- 3. The balanced type filter according to claim 1, wherein said another terminal is an unbalanced type terminal.
- 4. The balanced type filter according to claim 1, wherein a parallel resonance circuit is formed by parasitic components existing between said balanced type terminal and said another terminal, and said reactance element.
- 5. The balanced type filter according to claim 4, wherein the resonance frequency of said parallel resonance circuit is set in the pass band.
- 6. A communication device comprising:
transmission/reception means of performing transmission and/or reception; and the balanced type filter according to claim 1 filtering a send signal to be used in said transmission and/or a receive signal to be used in said reception.
Priority Claims (3)
Number |
Date |
Country |
Kind |
2001-165,730 |
May 2001 |
JP |
|
2001-255,280 |
Aug 2001 |
JP |
|
2001-349,885 |
Nov 2001 |
JP |
|
Parent Case Info
[0001] This application is a divisional of U.S. patent application Ser. No. 10/160,411, filed May 30, 2002.
Divisions (1)
|
Number |
Date |
Country |
Parent |
10160411 |
May 2002 |
US |
Child |
10850243 |
May 2004 |
US |