JPS584321Y2 - waveguide diode mount - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a waveguide diode mount in which a diode mounted on a substrate is coupled to a waveguide.

Figures 1a and 1b show conventional waveguide diode mounts.
is a waveguide, 2 is a diode, 3 is a diode support rod, 4
are IF and DC terminals with high frequency blocking circuits.

There is usually a screw cut into 3, which allows the diode position to be changed up or down.

This type of diode mount is usually used in the microwave band, but as the frequency increases, the overall dimensions become smaller. In the millimeter wave band, it is necessary to set the diameter of the center conductor of 4 to about 0.2 to 0.3 mm, which makes it difficult to hold the diode.

Figure 2 a, l) are also conventional waveguide diode mounts,
5 is a waveguide, 6 is a diode, and 7 is a microstrip substrate on which the diode is mounted.

Since the center conductor of this mount is formed of an IC pattern, it can be used satisfactorily even in the millimeter wave band, but the diode is fixed to the board and it is difficult to move the board up and down, so the position of the diode cannot be adjusted. There are drawbacks.

In order to solve these drawbacks, the present invention mounts the diode on a substrate, holds this substrate to stably support the diode, and makes the grounding external conductor into a cylindrical shape that almost circumscribes the substrate. This allows the diode position to be varied up and down by rotating the entire substrate.The drawings will be described in detail below.

Figure 3 a, l) shows an embodiment of the present invention, in which 8 is a waveguide;
9 is a board having an IF and DC conductor pattern with a high frequency blocking circuit on one side, 10 is a diode mounted on the board, and 11 is a threaded support rod for holding the board.

While the diode 10 is mounted on the substrate 9 and held stably, by rotating the support rod 11 of the substrate,
Since the position of this diode can be easily changed, both the diode and the high frequency blocking circuit are smaller in size compared to conventional waveguide mounts, and can be effectively applied to high frequency bands above the millimeter wave band.

Figures 4a and 4l) show another embodiment of the present invention in which two terminals of the diode are floating from the ground.

12 is a waveguide, 13 is a substrate having a conductor pattern on one side, 14 is a diode mounted on the substrate, and 15 is a support rod for the substrate.

The operation is similar to that shown in FIG. 3, in which the board on which the diode is mounted is supported by a rod 15, and the position of the diode is made variable by moving this support rod up and down.

Figures 5 and 6 a and l) are also another embodiment of the present invention, and are 16
．． 20 is a waveguide, 17.21 is a substrate with a conductor pattern on one side, 18.22 is a diode mounted on the substrate, and 19.20 is a metal rod that holds the substrate and is threaded on the outside. .

In both figures, the end of the waveguide is connected to the substrate, and the diode position can be varied by moving the substrate vertically to the wide surface of the waveguide in the case of Fig. 5 and horizontally in the case of Fig. 6. This is what I did.

As explained above, in the waveguide diode mount according to the present invention, the center conductor of the high frequency blocking circuit, IF, DC terminal, etc. is formed as an IC pattern on the substrate, and the diode is mounted on this substrate. Since the almost circumscribed cylinder is the outer conductor, the diode can be held stably regardless of the circuit size, and at the same time, it has the advantage of being able to change the diode position up and down by rotating with the support rod that holds the board. This is particularly effective when applied to small-sized diode mounts such as those in the millimeter wave band.

[Brief explanation of the drawing]

Figures 1a and b are a cross-sectional view and a plan view of a conventional waveguide diode mount, Figures 2a and b are a cross-sectional view and a top view of a conventional waveguide diode mount, and Figures 3a and b are a diagram of a conventional waveguide diode mount. FIGS. 4a and 4b show a cross-sectional view and a top view of a second embodiment of the present invention, respectively. FIGS. Figures 5 and 6 a and b are also part of the third example of the present invention. A cross-sectional view and a plan view of the fourth embodiment are respectively shown. In the figure, 1.5, 8, 12, 16.20 are waveguides, 2°6.10, 14, 18.22 are diodes, and 3.
is a diode support rod, 4 is a high frequency blocking circuit, 7, 9, 1
3, 17, and 21 are the substrates, and 11°, 15, 19, and 23 are support rods for the substrates.

Claims (1)

[Scope of utility model registration request] A waveguide and a cylinder are combined, and a substrate is provided almost internally inside the cylinder and supported by a threaded rod, a diode is mounted on this substrate, and a high frequency waveguide connected to the diode is provided. A waveguide diode mount characterized in that a center conductor of a circuit element such as a blocking circuit, an intermediate frequency terminal, a DC terminal, etc. is formed in the form of an integrated circuit pattern, and a corresponding outer conductor is formed of the cylinder. .