A signal mixing apparatus comprising first and second four port signal splitting/combining
networks having no relative phase shift between three ports and 180 of phase shift between …

(57) ABSTRACT A low-noise, linearized double-balanced active mixer circuit is described,
including a first input for a local oscillator (LO), a second input for an intermediate frequency …

Mixer which has, in place of four conventional diodes, the collector-emitter spaces of
transistors polarized to earth and supplied at their bases by the local oscillating signal …

The present invention relates to a receiver cir cuit arrangement and more particularly to a re
ceiver circuit arrangement comprising at least two mixing stages, to both of which the input …

Balanced mixer circuit apparatus using two matched integrated circuit field effect transistors
as active elements wherein one input signal is applied to the gates of the transistors in …

A technique of minimizing local oscillator signals external to a mixer circuit through the
reflecting of the local oscillator frequency signals in a balanced rat-race hybrid mixer circuit …

A mixer circuit is provided for receiving first and second input signals to be mixed and for
producing a mixed output signal. The mixer circuit comprises a pair of switching transistors …

(57) ABSTRACT A balanced series mixer including a balun transformer (10) having a HF-
source port and an antenna port on one side and two diode ports on the other side, two …

57 ABSTRACT A mixer for outputting an intermediate frequency signal as the result of
mixing of a radio frequency signal and a local oscillator signal which are inputted into the …

A frequency-mixing device performing voltage multiplying and low-pass filtering operations
in addition to frequency mixing is provided. The three operations may be carried out with the …