JPS59149702U - semiconductor phase shifter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

FIG. 1 is a diagram showing an example of the structure of a conventional semiconductor phase shifter, FIG. 2 is an explanatory diagram of the operation of FIG. 4 is an explanatory diagram of the operation of the semiconductor phase shifter shown in FIG. 3, and FIG. 5 is a structural diagram of another embodiment of the semiconductor phase shifter according to this invention. In the figure, 1 is the semiconductor substrate, 2 is the ground conductor, 3 is the strip conductor, 4 is the first 5PDT switch, 5 is the second 5PDT switch, 6 is the drain electrode of the FET, 7 is the gate electrode of the FET, and 8 is the FET 9 is a high impedance line, 10 is a low impedance line, 11 is a bias circuit, 12 is a bias terminal, 13 is a main line, and 14 is a first line.
15 is a second branch line, 16 is a 5PST switch, and 17 is a microstrip line with an electrical length θ. Note that the same or equivalent parts in the figures are indicated by the same reference numerals. Tsuyoshi ・ 121 13 〒 /j 4

Claims (1)

[Scope of utility model registration request] Drain electrodes of first and second field effect transistors formed on the same semiconductor substrate as the semiconductor substrate are connected to one end of each line on the input and output sides consisting of a microstrip line formed on a semiconductor substrate, and the input side The source electrodes of the first and second field effect transistors having their drain electrodes connected to the line and the source electrodes of the third and fourth field effect transistors having their drain electrodes connected to the output line have different lengths. are connected by first and second branch lines consisting of microstrip lines, and train electrodes of one or more field effect transistors are connected to the first and second branch lines, respectively. A MyStrip line with an open end is connected to the source electrode, and further includes means for applying a bias voltage to the gate electrodes of the field effect transistor and each of the first to fourth field effect transistors. Semiconductor phase shifter.