Modular transmitter and antenna array system

• US 5,099,254 A
• Filed: 03/22/1990
• Issued: 03/24/1992
• Est. Priority Date: 03/22/1990
• Status: Expired due to Term

• Current Assignee: Raytheon Company Lexington Massachusetts 02173
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Allard, William A., Tsukii, Toshikazu
• Primary Examiner(s): LaRoche, Eugene R.
• Assistant Examiner(s): Lee, Benny T.
• Application Number:
  US07/497,949
• Time in Patent Office: 733 Days
• Field of Search: 361/392-394, 361/399, 361/400, 361/382, 174/52.3, 174/52.5, 343/700 MS, 343/700 R, 343/701, 343/853, 342/368, 342/371-373, 333/247
• US Class Current: 343/853
• CPC Class Codes: H01Q 1/002 Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
• CPC Class Codes: H01Q 1/02 Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
• CPC Class Codes: H01Q 21/0025 Modular arrays

Abstract

A module for constructing a modular transmitter is disclosed. The module contains antenna elements along the front edge of a base. RF circuitry is fabricated on both the top and the bottom sides of the base. The base contains heat pipes to carry heat away from RF circuitry. The base is made to be plugged into a mounting block which provides electrical signals to the module and acts as a sink for the heat removed by the heat pipes.

Claims

1. A radio frequency system of the type having an array antenna, said system comprising:

a) a plurality of modules, each module comprising;

(i) a supporting base, having a frontal edge, a rearward edge, and a surface disposed between said frontal edge and said rearward edge;

(ii) a plurality of antenna elements mounted along said frontal edge of the supporting base; and

(iii) a plurality of RF packages mounted on said surface of the supporting base, each such RF package having an RF signal port electrically coupled to a different one of the plurality of antenna elements; and

b) means for mounting the plurality of modules along the rearward edge of each of the plurality of modules with the plurality of antenna elements of each of the plurality of modules arranged to from the array antenna of the system.

2. The radio frequency system of claim 1 wherein each RF package comprises, electrically coupled to its RF signal port,

a) an amplifier for radio frequency signals;

and

b) a phase shifter, connected in series with the amplifier.

3. The radio frequency system of claim 2 wherein each of the plurality of modules additionally comprises an integrated circuit chip, mounted over the supporting base thereof, said chip representing logic circuitry for generating control signals to the amplifier and phase shifter in each of the plurality of RF packages.

4. The radio frequency system of claim 3 wherein each of the plurality of modules additionally comprises a printed circuit board mounted to the first surface of the supporting base thereof and wherein the integrated circuit chip is mounted on the printed circuit board.

5. The radio frequency system of claim 4 additionally comprises:

a) control electronics; and

b) means for electrically connecting the control electronics to the integrated circuit chip of each of the plurality of modules, said means passing through the mounting means.

6. The radio frequency system of claim 5 wherein the mounting means comprises a channel for carrying cooling fluid.

7. The radio frequency system of claim 6 including means for thermally coupling each of the plurality of modules to the channel.

8. The radio frequency system of claim 6 wherein the mounting means comprises a plurality of slots, each slot being bounded by walls projecting into the channel.

9. The radio frequency system of claim 8 wherein the supporting base of each of the plurality of modules comprises a fin which projects into a corresponding one of said plurality of slots.

10. The radio frequency system of claim 9 wherein the supporting base of each of the plurality of modules comprises at least one heat pipe, one end of said at least one heat pipe being disposed in the fin.

11. The radio frequency system of claim 10 wherein the at least one heat pipe is disposed adjacent one of the plurality of RF packages.

12. The radio frequency system of claim 1 additionally comprising a plurality of heat pipes disposed in the supporting base of each of the plurality of modules.

13. The radio frequency system of claim 12 wherein each of the plurality heat pipes is disposed adjacent one of the plurality of RF packages.

14. The radio frequency system of claim 13 wherein the mounting means comprises means for dissipating heat and including means for thermally coupling each of the plurality of heat pipes to the means for dissipating heat.

15. The antenna recited in claim 2 wherein each one of the plurality of antenna elements of each one of the plurality of modules has a co-polarization input and a cross-polarization input and wherein the plurality of RF packages mounted on said surface are coupled to the co-polarization inputs.

16. The antenna recited in claim 15 wherein each one of the modules includes a second plurality of RF packages mounted on a second surface of the supporting base, such second plurality of RF packages being coupled to the cross-polarization inputs.

17. The radio frequency system of claim 2 wherein each of the plurality of modules additionally comprises:

a) a dielectric layer having stripline circuitry disposed thereon, said dielectric layer being mounted on the first surface of the supporting base thereof between the plurality of RF packages and the plurality of antenna elements, said stripline circuitry being electrically connected to the plurality of RF packages and the plurality of antenna elements.

18. An electronic system comprising:

a) a plurality of modules, each module comprising;

(i) a supporting base having a fin disposed along one edge;

(ii) at least one package of electronics mounted on the supporting base; and

(iii) at least one heat pipe, comprising a vapor channel and wick, disposed in the supporting base, said at least one heat pipe having an end disposed in the fin; and

b) means, having a heat removing channel and a plurality of slots formed therein, for mounting said plurality of modules, said mounting means comprising;

(i) means for dissipating heat, said means being disposed in the heat removing channel of the mounting means, and wherein the fin of each module projects into a corresponding one of the plurality of slots and is in thermal contact with the means for dissipating heat.

19. The electronic system of claim 18 wherein the means for dissipating heat comprises a refrigerated fluid.

20. The electronic system of claim 19 wherein the mounting means additionally comprises means for coupling electrical signals to said at least one package of electronics of each of the plurality of modules, said coupling means passing through the the heat removing channel of the mounting means.

21. The electronic system of claim 20 wherein each of the plurality of modules comprises a plurality of packages of electronics, wherein the supporting base of each of the plurality of modules comprises two sides, and wherein a first portion of said plurality of packages of electronics is mounted on a first one of said two sides and a second portion of said plurality of packages of electronics is mounted on a second one of said two sides.

22. The electronic system of claim 21 wherein each of the plurality of modules comprises one heat pipe for each one of said first portion of said plurality of packages of electronics and wherein said one heat pipe is disposed adjacent to said one of said plurality of packages.

23. The electronic system of claim 22 wherein each of said plurality of packages of electronics comprises Monolithic Microwave Integrated Circuits (MMIC).

24. The electronic system of claim 23 wherein each of said plurality of packages of electronics comprises:

a) an RF input port;

b) an amplifier; and

c) a phase shifter, said amplifier and said phase shifter being connected in series with the RF input port.