TH21907A - Radio receiver - Google Patents

Abstract

Methods and devices in homodine receivers, including The local oscillator (LO) generates the oscillator signal at the frequency fLO, and the mixer (11) and the receiving path (12) are used to receive the input signal with a frequency equal to Fgr. Slater And the input signal is fed to the mixer (11), the oscillator signal is fed into the Handle one (13) to generate the first output signal with a frequency equal to MmfLO, where M is the full value, the first output signal is fed to the second handle (14) to generate the signal. A second output with a frequency equal to MmfLO / N, where N is an integer and MIN and the mixer (11) and the second handling unit (14) are combined to reduce the leakage of The signal being fed to the mixer (11) from the second handling unit (14) in the device. The first handling unit (13) is connected to the local oscillator (LO) to generate the first output signal with a frequency of MmfLO, where M is the combined value and the second handling unit (14). It is connected to the first handle (13) to generate a second output signal with a frequency equal to MmfLO / N, where N is an integer and MIN and the mixer (11) and the second handle (14). Combine them to reduce Leakage of the signal being fed to the mixer (11) from the second handling unit (14) in the said device. One (13) handling unit is connected to a local oscillator (LO) to generate a signal.

Claims (5)

1. Methods in a homodine receiver that include A spot oscillator (LO) that generates an oscillator signal at a frequency of fLO, a mixer (11) and a receiver method (12) receiving an output signal with a frequency equal to fRF by the oscillator signal and the input signal is fed to the mixer (11), which is directed by the procedure of: (a) the use of the oscillator signal in the first handling unit. (13) to generate the first output signal With a frequency equal to M * fLo, where M is an integer value, (b) one input signal in the second handling unit (14) to produce a second output signal with a frequency of M * fLO. / N where N is an integer and M is not equal to N, and (c) combining the mixer (11) and the second disconnection unit (14) to reduce the leakage of the signal being fed to the mixer (11) from Second handling unit (14) 2. Methods specified in Clause 1, which are directed by the nature of birth in a local oscillator. (LO) in which the output signal is balanced That includes the first oscillator and the second oscillator signal. The second oscillator is shifted to 180 ° C from the first oscillator. 3. Method as specified in the Clause 1 or 2 of the Clause. Where is directed by the nature of the second output phase shift of 90 degrees Celsius and by the second output signal being fed to the mixer (11) and the phase shifted signal to the second mixer ( 11 \ '\') to get the quadrage signal. 4.Homodine receivers include A spot oscillator (LO) that generates an oscillator signal at a frequency of fLO, and the mixer (11) and the receiver method (12) receives the output signal with a frequency equal to fRF by the signal. The oscillator (LO) and the antenna (12) are connected functional to the mixer (11), which is directed by the manner that - the first handling unit (13) is connected to the oscillator. A dedicated router (LO) to generate a first output signal. With a frequency of M * fLo, where M is an integer, - the second handling unit (14) is connected to the first handling unit (13) to generate a second output signal with a frequency of M * fLO /. N where N is an integer and M is not equal to N, and - the mixer (11) and the second handling unit (14) are added to reduce the leakage of the signal being fed to the mixer (11) from the handling unit. Second (14) 5. Equipment, as set out in claim 4, where directed by the manner in which the first (13) management unit is the multiplier and the second (14) management unit is the dividing circuit.