BROAD-BAND PARALLEL BALANCED MIXER Russian patent published in 1996 - IPC

FIELD: frequency conversion in UHF and microwave radio-receiving and radio-measuring engineering. SUBSTANCE: mixer has insulating substrate 1 carrying sections 2,3,4 of microstrip transmission lines, frequency filters 7,8, semiconductor diodes 9,12,15,18, sections of high-resistance symmetrical two-wire transmission lines 11,14. First planar conductor 10 of first section of transmission line 11 is connected through first jumper 21 to second planar conductor 16 of second section of line 14 and first planar conductor 12 of second line 14 is connected through jumper 23 to second planar conductor 19 of first section of high-resistance symmetrical wire transmission line. Insulating substrate 1 also mounts section of microstrip transmission line 23 that turns into balancing unit. Leads of balancing unit 23 are connected through first and second capacitors 27 and 30 to first and second planar conductors 28 and 31 of low-resistance symmetrical two-wire transmission line 29. Low-resistance transmission line 29 is branched off into first and second high-resistance symmetrical two-wire transmission lines 33,34. Leads of first and second planar conductors 35,37 of first high-resistance transmission line 33 are connected through third and fourth jumpers 36 and 38 to first and second planar conductors 10 and 19 of first section of high-resistance transmission line 11. Leads of first and second electrodes 29 and 42 of second high-resistance symmetrical two-wire transmission line 34 are connected through fifth and sixth jumpers 41 and 44 to second and first electrodes 16 and 13 of second transmission line 14. First and second planar conductors 28 and 31 of low-resistance transmission line 29 are connected through first and second inductance coils 45 and 49, first and second contact pads 47 and 50, first and second resistors 48 and 51 to screen conductor of microstrip transmission lines 17. EFFECT: enlarged functional capabilities. 3 dwg