Title:
ミキサ回路、ミキサ回路を備える受信器、受信器を用いて無線通信装置及び入力信号を発振器信号と混合することによって出力信号を発生する方法。
Document Type and Number:
Japanese Patent JP4510013
Kind Code:
B2
Abstract:
The invention relates to a mixer circuit comprising an input node for receiving an input signal, a first output node 202 , and a second output node 203 , voltage to current conversion means and switching means operatively coupled to each other and to the input node, the first output node and the second output node to generate a mixed input signal at the first output node and the second output node in response to an oscillator signal. In an embodiment the voltage to current conversion means comprises a first and a second voltage to current converter, implemented as N-MOSFETs M 2 and M 3 , with their gates connected to the input node. The drain of M 2 is connected to the first output node 202 , while the drain of the M 3 is connected to the second output node M 3 . The source of M 2 is connected to the switching node 221 , while the source of M 3 is connected to the second switching node 222 . The switches SW are arranged to couple the first switching node 221 to a first supply voltage VDD and the second switching node 222 to a second supply voltage VSS during a first phase of the oscillator signal, and the first switching node 221 to VDD and the second switching node 222 to VSS during a second phase of the oscillator signal. The mixer circuit according to the invention may operate at low supply voltages by using switches connected only to the supply voltages VSS and VDD. Mixing is achieved by voltage to current converters GM 1 and GM 2 , which are alternatingly activated by the switches SW.
Inventors:
Krumperink Eric A.M.
Rausma Simon Em
Stick Fault Eduard F
Rausma Simon Em
Stick Fault Eduard F
Application Number:
JP2006516634A
Publication Date:
July 21, 2010
Filing Date:
June 01, 2004
Export Citation:
Assignee:
NXP B.V.
International Classes:
H03D7/12; H03D7/14
Domestic Patent References:
| JP2001077633A | ||||
| JP2001119315A | ||||
| JP2003060441A | ||||
| JP2000059147A | ||||
| JP63142716A |
Attorney, Agent or Firm:
Kenji Yoshitake
Hidetoshi Tachibana
Takeshi Sekine
Takahashi
Hidetoshi Tachibana
Takeshi Sekine
Takahashi