Title:
【発明の名称】周波数逓倍回路
Document Type and Number:
Japanese Patent JP2861795
Kind Code:
B2
Abstract:
A frequency converter comprises a first differential circuit formed with first and second transistors M1, M2 and optionally a second differential circuit formed with third and fourth transistors M3, M4. The first and second differential circuits are driven by equal values of constant current. An input alternating current signal is supplied between the gates of the first and second transistors with an offset voltage difference. Also, an input alternating current signal is supplied between the gates of the third and fourth transistors with an offset voltage difference. Then, the differential outputs of the first and second differential circuits are connected in cross-connection to selectively extract frequency component double of the frequency of the input alternating current signal. The offset voltage may be provided by DC bias, a pair of transistors or a transistor resistor combination.
Inventors:
KIMURA KATSUHARU
Application Number:
JP5297694A
Publication Date:
February 24, 1999
Filing Date:
February 25, 1994
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H03D7/12; H03B19/14; H03D7/14; (IPC1-7): H03B19/14
Domestic Patent References:
| JP54160155A |
Other References:
ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｃｉｒｃｕｉｔｓ ａｎｄ Ｓｙｓｔｅｍｓ Ｉ：Ｆｕｎｄａｍｅｎｔａｌ Ｔｈｅｏｒｙ ａｎｄ Ａｐｐｌｉｃａｔｉｏｎｓ，Ｖｏｌ．４３，Ｎｏ．７，Ｊｕｌｙ １９９６，Ｋ．Ｋｉｍｕｒａ，ｐｐ５５９−５７６，”Ｓｏｍｅ Ｃｉｒｃｕｉｔ Ｄｅｓｉｇｎ Ｔｅｃｈｎｉｑｕｅｓ ｆｏｒ Ｌｏｗ−Ｖｏｌｔａｇｅ Ａｎａｌｏｇ Ｆｕｎｃｔｉｏｎａｌ Ｅｌｅｍｅｎｔｓ Ｕｓｉｎｇ Ｓｑｕａｒｉｎｇ Ｃｉｒｃｕｉｔｓ
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)