JPS62118601A - Microwave integrated circuit - Google Patents

Abstract

PURPOSE:To eliminate the need for the removal of a through-capacitor and electronic component terminals and to mount a microwave integrated circuit to a prescribed position of a case for product immediately in removing the microwave integrated circuit finished separatedly for the adjustment and check in a case for test by providing the 1st side wall for connecting input/output terminals and the 2nd side wall for connecting electronic components except said terminals separately among the side walls each made of a metallic body provided at the side face of a combined body. CONSTITUTION:A metal incorporated with a carrier 17 made of a metal and fixed to the rear face of a dielectric plate 21 is provided to the side face of a microwave integrated circuit 1 not being the input/output connection section of a microwave signal in the carrier 17 in a direction orthogonal to the dielectric plate, or a metal other than the carrier is fixed to the carrier, and through- capacitors 7, 8, electric components and terminals 15, 16 are arranged to the metallic plate 18. The microwave integrated circuit finished in the adjustment and check in the test use casing is moved to a prescribed position of the case for product without removing the through-capacitors, electronic components and terminals.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a microwave integrated circuit, and more particularly to the structure of a carrier type microwave integrated circuit.

[Conventional technology]

In recent years, in stone devices used at frequencies above the microwave band, a conductor layer, thin film resistor, etc. are provided on the top surface of a dielectric plate, and individual components such as transistors, diodes, and capacitors are mounted to form a circuit. Microwave integrated circuits are widely used.

As the structure of this microwave integrated circuit, a carrier method is often used in which a metal body is fixed to the conductor surface on the back side of a dielectric plate by soldering or the like.

For this metal body, a metal whose linear expansion coefficient is approximately the same as that of the dielectric plate is used. For example, if alumina with a linear expansion coefficient of 4 to 6 x 10 am/°C is used as the dielectric plate, the metal body may be made of covar with a linear expansion coefficient of 4 to 5 x 10 cm/°C, or 3.7 to 5.3 x to am/°C molybdenum, and others are selected.

After assembly, microwave integrated circuits using this carrier method are first placed in a test case made of another metal in order to be individually adjusted and inspected. This test case is surrounded by side walls on all sides to prevent microwave signals from leaking to the outside, and part of the side walls are equipped with feed-through capacitors to bias the transistors or diodes on the microwave integrated circuit. is attached to the feedthrough capacitor, and electrical components such as individual components for biasing, such as resistors, capacitors, coils, etc., are connected to the feedthrough capacitor.

The microwave integrated circuit, which has been individually adjusted and inspected, is placed in a test casing, and the microwave integrated circuit, feedthrough capacitor, electrical components, and terminals are removed, and then placed in a product. It is moved to a predetermined position in the housing.

Figure 4 shows 1 configured as a general microwave integrated circuit.
This is a circuit diagram of a stepped GaAsFET amplifier. In the same figure, a microwave integrated circuit main body 1 includes an input circuit 2, an output circuit 3, a GaAs FET 4 mounted above, and an input terminal in the input circuit 2. 5 and an output terminal 6 in the output circuit 3. The feedthrough capacitors 9 and 10 are
The negative voltage at the terminal 15 is divided by a voltage dividing resistor that biases the gate of the GaAs FET 4. resistance 1
1 biases the drain of the GaAs FET 4, the capacitor 12 is necessary to prevent oscillation, and a positive voltage is applied to the terminal 16. The wires 13 and 14 are GaAa FEI:T 4 on the microwave integrated circuit body 1.
It is necessary to connect the gate or drain of the feedthrough capacitor 7.8 to the feedthrough capacitor 7.8.

Now, FIG. 5 is a perspective view of the circuit shown in FIG. 4 constructed from a conventional microwave integrated circuit. In the same figure, parts corresponding to the reference numerals of the circuits in FIG. 4 are given the same numbers. In addition, a dielectric plate 2 constituting the microwave integrated circuit main body 1
1 and a carrier 51 made of metal fixed to the back surface of the dielectric plate 21. In the case of conventional microwave integrated circuits, the feedthrough capacitors, bias resistors, and capacitors that prevent leakage of microwave signals are not integrated into the main body of the microwave integrated circuit, so they cannot be used as a complete amplifier circuit as is. do not have.

FIG. 6 is a partially cutaway perspective view of the conventional microwave integrated circuit of FIG. 5 mounted in a test case for adjustment and inspection. In the same figure, parts corresponding to the reference numerals of the circuits in FIG. 4 are given the same numbers. In addition, a test case made of metal (partially cut) 61, a metal test lid (partly cut) 62, and an input connector 63 are shown.

The test case 61 is surrounded by side walls on all sides to prevent microwave signals from leaking to the outside. In addition, in order to adjust and inspect the microwave integrated circuit main body 1, K is a GaAa
It is necessary to apply a bias to FET 4, so a single feedthrough capacitor 7.8 is attached to the side of the test case 61 where the input/output connector cannot be attached, and resistors 9, 10, 11,
A capacitor 12 and terminals 15 and 16 are placed and wired. In this state, the amplifier circuit is completely
Adjustment and inspection become possible.

FIG. 7 is a partially cutaway perspective view of the case where the test case of FIG. 6 is mounted as a conventional microwave integrated circuit in a product case. In the same figure, parts corresponding to the reference numerals of the circuits in FIG. 4 are given the same numbers. In addition, a product casing (partially cut) 71, a product lid (partially cut) 72, and an adjacent microwave integrated circuit main body 73, 74 such as an isolator, an amplifier, a mixer, etc. are shown. There is. Furthermore, the side wall 75 provided in the product casing 71 is
Prevent microwave signals from going outside. Here, feedthrough capacitors 7 and -8 are attached, and a resistance of 9°10.1
1, a capacitor 12, and terminals 15 and 16 are arranged,
Wired.

However, in order to transfer the microwave integrated circuit main body 1 from the test case 61 in FIG. 6 to the product case 71 in FIG.
, resistors 9, 10, 11, capacitor 12 and terminal 15.
There is an inconvenience in that the product 16 must be disassembled, removed, and then reassembled into the product casing 71.

[The problem that the invention is trying to solve] In the structure of the conventional microwave integrated circuit described above, the microwave integrated circuit after adjustment and inspection is placed in the test case. 4 circuits, feedthrough capacitors, electrical components and terminals! In particular, feed-through capacitors and electrical components are characterized by the work of removing the wires and moving them to the specified position in the product casing. This method has the drawback of not only being inconvenient but also causing problems with respect to reliability.

An object of the present invention is to solve the above-mentioned drawbacks, and to eliminate the need to remove feedthrough capacitors, electrical component terminals, etc. when removing a microwave integrated circuit that has been individually adjusted and inspected in a test case. An object of the present invention is to provide a carrier-based microwave integrated circuit that can be moved to a predetermined position in a product casing.

[Failure to solve the problem]

According to the configuration of the present invention, in a microwave integrated circuit including a stacked body of a carrier made of a metal body and a dielectric body, input/output terminals are provided in side walls made of a metal body provided on the sides of the stacked body. The device is characterized in that a first side wall that connects the terminals and a second side wall that connects electronic components other than the terminals are provided separately.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows a microwave integrated circuit according to an embodiment of the present invention.
FIG. 2 is a perspective view configuring the circuit shown in the figure. In the same figure, the fourth
Components corresponding to the reference numerals of the circuits in the figure are given the same numbers. In addition, a dielectric plate 21 constituting the microwave integrated circuit main body 1, a carrier 17 made of metal fixed to the back surface of the dielectric plate 21, and a carrier 17 in a direction perpendicular to the dielectric plate 21. A metal plate 18 that is provided integrally with the carrier 17 or has a metal different from the carrier 17 fixed to the carrier 17.
is shown. A feedthrough capacitor 7.8 is attached to this metal plate 18, and a resistor 9.10.11, a capacitor 12, and terminals 15.16 are arranged and wired.

FIG. 2 is a partially cutaway perspective view of the microwave integrated circuit of the embodiment of the present invention shown in FIG. 1 mounted in a test case for adjustment and inspection. In the same figure, parts corresponding to the reference numerals of the circuits in FIG. 4 are given the same numbers. In Figure 2,
A test case made of metal (partially cut) 21, a test lid made of metal (partly cut) 22, and an input connector 23 are shown. In order to prevent leakage of the microwave signal to the outside, the three side walls of the test case 21 and the metal plate 18 of the microwave integrated circuit body 1 play the role.

Further, as shown in FIG. 1, the metal plate 18 includes a feedthrough capacitor 7.8, resistors 9, 10, 11, a capacitor 12,
Since the terminals 15 and 16 have already been installed and wired, there is no need to perform new wiring work.

FIG. 3 is a partially cutaway perspective view of the microwave integrated circuit of the present invention shown in FIG. 1 mounted in a product casing. In the same figure, parts corresponding to the reference numerals of the circuits in FIG. 4 are given the same numbers. In addition, a product casing (partially cut) 31, a product lid (partially cut) 32, and adjacent microwave integrated circuit bodies 33 and 34, such as isolators, amplifiers, mixers, etc. is shown. When transferring the microwave integrated circuit main body 1 from the test case 21 shown in FIG.
All you have to do is remove the microwave integrated circuit main body l along with these components and move it.

As described above, in this embodiment, a carrier made of metal fixed to the back surface of a dielectric plate is provided with a wire at right angles to the dielectric plate on the side surface that does not become the input/output connection part of the microwave signal of the microwave integrated circuit. From K, a metal plate integrated with the carrier should be provided in the direction of , or a metal separate from the carrier should be fixed to the carrier, and the feedthrough capacitor, electrical components, terminals, etc. should be arranged on the metal plate. Micro integrated circuits that have been adjusted and inspected in the test casing can be moved to the specified position in the product casing without removing feedthrough capacitors, electrical components, terminals, etc., improving workability and reliability. It is very effective in terms of gender. Although the present invention uses an amplifier as an example, the present invention is also very effective for devices that apply bias to active elements, such as microwave integrated circuits such as oscillators, multipliers, amplifiers, and attenuators.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to obtain the effects of improving work efficiency and improving reliability.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a microwave integrated circuit according to an embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of the microwave integrated circuit of Fig. 1 mounted in a test case, and Fig. 3 1 is a partially cutaway perspective view of the microwave integrated circuit shown in FIG. 1 mounted in a product casing, FIG. 4 is a circuit diagram of a single-stage GaAsFET amplifier that constitutes a general microwave integrated circuit, and FIG. Figure 5 is a perspective view of a conventional microwave integrated circuit, Figure 6 is a partially cutaway perspective view of a conventional microwave integrated circuit mounted in a test case, and Figure 7 is a conventional microwave integrated circuit. FIG. 2 is a partially cutaway perspective view of the product mounted in a product casing. 1...Microwave integrated circuit body, 2...
・Input circuit, 3... Output circuit, 4...
GaAsFET, 5... Input terminal, 6...
... Output terminal, 7, 8... Feedthrough capacitor,
9,10.11...Resistance, 12...Capacitor, 13.14...Wire, 15...
- Negative voltage terminal, 16...Positive voltage terminal, 17.
51...Carrier, 18...Metal plate,
21...Dielectric plate, 31,61...Test casing, 22.62...Test lid, 31,7
1... Product casing, 32.72... Product lid, 33, 34° 73.74... Adjacent microwave integrated circuit body. I 41! ! -No. 71! T Voluntary amendment to the procedure) 61.6.27 Showa year, month, day 1, case description 1985 patent application No. 259975 2
, Title of the invention: Microwave integrated circuit 3, Relationship to the person making the amendment: Applicant: 5-33-1 Shiba, Minato-ku, Tokyo (423) NEC Corporation Representative: Tadahiro Sekimoto 4, Agent: 108 Tokyo 5, Sumitomo Sanda Building, NEC Corporation, 37-8 Shiba 5-chome, Miyakominato-ku (contact information: Patent Department, NEC Corporation) 5, "Claims" and "Detailed Description of the Invention" of the specification to be amended. Each column. 6. Contents of amendment (1) The claims of the specification will be amended as shown in the attached sheet. (2) Page 7, line 19 of the specification [superimposed body in front]] Page 8, line 2 of the specification, up to ``provided'' are as in the next sentence. Correct.

Claims (2)

[Claims] (1) In a microwave integrated circuit equipped with a stacked body of a carrier made of a metal body and a dielectric plate, input/output terminals are connected in side walls made of metal bodies provided on the sides of the stacked body. A microwave integrated circuit characterized in that a first side wall for connecting electronic components other than the terminals and a second side wall for connecting electronic components other than the terminals are separately provided. (2) The microwave integrated circuit according to claim 1, wherein the carrier and the second side wall are made of an integral metal body.