Title:
HIGH-FREQUENCY SWITCH CIRCUIT
Document Type and Number:
Japanese Patent JP3147819
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce the power consumption of single port-multiport switch for a selector antenna by serially connecting PIN diodes which need to have current flow through and are connected in parallel in terms of a direct current with them connected in parallel in terms of a high frequency.
SOLUTION: When the switch of a PORT1 is 'ON' and the other PORTS are 'OFF', a terminal V1+ which corresponds to the anodes of PIN diodes X11 and X12 and a terminal V1- which corresponds to cathodes are set as ground potential, the PIN diode terminal V2+ of a PORT2 is +2V, a terminal V2- is connected to a terminal V3+, and a terminal V3- is grounded. PIN diodes X21 and X22 of the PORT2 and PIN diodes X31 and X32 of a PORT3 are separately and serially connected in terms of a direct current, and power which is consumed by voltage drop such as resistance can be applied to the PIN diodes that constitute switches.
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Inventors:
Tomoaki Saryang
Application Number:
JP13726097A
Publication Date:
March 19, 2001
Filing Date:
May 27, 1997
Export Citation:
Assignee:
NEC
International Classes:
H01P1/15; H03K17/76; (IPC1-7): H01P1/15; H03K17/76
Domestic Patent References:
| JP832302A | ||||
| JP5314905B1 |
Attorney, Agent or Firm:
Yutaro Kumagai
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