JPS5990421A - Pulse radar transmitter - Google Patents

Abstract

PURPOSE:To provide a pulse radar transmitter of a small size and a light weight by using a current charging a capacitor 3 with resonance and resetting a saturable coil 7 and a saturable transformer 5 so as to save a bias power supply 8 and a choke coil 9. CONSTITUTION:When a gate trigger enters a gate of a silicon controlled rectifier element SCR4, a resonance charging current flows from a DC power supply 1 and a capacitor 3 is charged. Since the resonance charging current flowing to a saturable coil 7 and a saturable transformer 5 flows in the opposite direction as the discharge current of the capacitor 3 in this case, the magnetizing state of the saturable coil 7 and the saturable transformer 5 by the discharge current is reset to the initial state. When a trigger is given to the gate of the SCR6, the discharge from the capacitor 3 is blocked until the SCR6 is conductive completely by the operation of the saturable coil 7 in order to prevent damage of the SCR6. When the SCR6 is conductive completely and the saturable coil 7 is saturated, the charge in the capacitor 3 is discharged, the charge current is boosted by the saturable transformer 5 to charge a high voltage pulse generating section 10, a high voltage pulse is generated at a microwave oscillator 12 and a microwave is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in pulse radar transmitters.

First, a conventional transmitter of this type will be briefly explained.

Figure 1 is a diagram showing a conventional pulse radar transmitter.
In Figure 1, (1) is a DC power supply, (2) is a coil for resonant charging, (3) is a capacitor for resonant charging, and (4) is a DC power supply for capacitor (3) (resonant charging starts from 11). silicon controlled rectifier (hereinafter referred to as SOR).

(5) is a saturable transformer for boosting and switching, (6
) is the SOR that discharges the charge accumulated in the capacitor (3), (the force is SOR), the saturable coil (8) is the saturable transformer (5), and the saturable coil (8) is the saturable coil that protects the SOR (6). 7) Bias power supply for resetting (9)
is a choke coil for isolating the saturable coil (7) and saturable transformer (5) from the IASUMI source (8), Ql is a high voltage pulse generator, (Io is a coil (2) to high voltage pulse generator) The SOR magnetic modulator consists of a part α, and the α part is a microwave oscillator tube (magnetron, etc.)
It is.

Next, the operation of the conventional pulse radar transmitter will be explained using FIG.

1. When a trigger is applied to the gate of 5OR (41), the capacitor (3) is resonantly charged from the DC power supply (1) via the coil (2).

After the above resonance charging is completed and SOR (41 turns off), when the trigger enters the gate of SC!R (61, 5 (
In order to prevent burnout of LF (6), the action of the saturable coil (7) prevents discharge from the capacitor (3) in the case where S OR (61 becomes completely conductive).
) becomes completely conductive and the saturable coil (force is also saturated), the charge in the capacitor (3) is discharged, and the voltage is boosted by the saturable transformer (5) to charge the high voltage pulse generator (1).

Thereafter, the saturable transformer (5) is saturated and the electric charge in the high voltage pulse generator i11 is discharged. At this time, microwave oscillator tube a3
A high voltage pulse is generated at both ends of the microwave oscillator tube, and the microwave oscillator tube transmits pulsed microwaves.

The pulse radar transmitter repeats the above operations, but
In order to operate the saturable coil (7) and the saturable transformer (51e), a constant current is supplied to them from the bias power supply (8), and the saturable coil (7) and the saturable transformer (51e) described above are supplied with a constant current from the bias power supply (8). ), the magnetization state of each core is returned to its initial state.

1, the choke coil (9) is connected to the capacitor (3) and the discharge charge of the high voltage pulse generator OI is the bias power supply (8).
prevents it from leaking into the

As described above, the conventional pulse radar transmitter requires a bias power supply (8) and a choke coil (9), which is a drawback when reducing the size and weight.

In order to eliminate such conventional drawbacks, the present invention resets the bias power supply ( 8) and choke coil (9)
The present invention provides a means to reduce the size and weight of a pulse radar transmitter. The following is a step-by-step explanation.

FIG. 2 is a diagram showing an embodiment of the present invention.

DC power supply (1) - saturable coil (7), high voltage pulse generator ill and microwave oscillator tube (I is the same as shown in Figure 1, (1) is coil (2) - saturable SO consisting of a coil (7) and a high voltage pulse generator (11)
R magnetic modulator.

Next, the present invention will be explained in detail using FIG. 2. 1. When a trigger is applied to the gate of 5OR (4), the DC power supply (1
A resonant charging current flows through the coil (2), the capacitor (3), the saturable coil (power), the saturable transformer (5) and the SOR+41;
) is charged. At this time, the resonant charging current flowing through the saturable coil (7) and the saturable transformer (5) flows in the opposite direction to the discharging current of the capacitor (3), which will be described later. The magnetization state of the iron core of the saturable transformer (5) is reset to the initial state.

Resonance charging to capacitor (3) is completed and s a R (4
) is turned off, when a trigger is applied to the gate of 5OR (61), the capacitor (3 ) to prevent discharge from 5.
When cR (6) becomes completely conductive and the saturable coil (7) is also saturated.

The charge on the capacitor (3) is discharged and the saturable transformer (5
) to charge the high-voltage pulse generator oItl-.

At this time, high voltage pulses are generated at both ends of the microwave oscillator (+3), and pulsed microwaves are transmitted to the microwave oscillator tube (1 side).

As described above, the present invention makes it possible to reduce the size and weight of the SOR magnetic modulator, and is therefore particularly effective for pulse radar transmitters mounted on missiles.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a conventional pulse radar transmitter. FIG. 2 is a diagram showing a pulse radar transmitter of the present invention. In the figure, (1) is a DC power supply, (2) is a coil, and (3
) is a capacitor, (4) is an SCR, (51 is a saturable transformer, (6) is an SOR, +71 is a saturable coil, H is a high-voltage pulse generator, α is a microwave oscillator, and O is a SOR magnetic modulator) In addition, the same or equivalent parts in Figure 9 are indicated with the same reference numerals. Agent: Makoto Kazuno

Claims (1)

[Claims] In a pulse radar transmitter consisting of an SOR magnetic modulator, a DC power supply connected to the input of the SC/R magnetic modulator, and a microwave oscillation tube connected to the output of the SOR magnetic modulator, A charging current to the SOR magnetic modulator is configured to reset a saturable transformer and a saturable coil in the SOR magnetic modulator, and a bias power supply for resetting the saturable transformer and the saturable coil; A pulse radar transmitter characterized by eliminating the need for a saturable transformer and a choke coil for isolating between the saturable coil and the bias power source.