Antenna integral-type transmitter/receiver system

• US 5,760,749 A
• Filed: 09/25/1995
• Issued: 06/02/1998
• Est. Priority Date: 03/17/1994
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Hagiwara, Yuichi, Kaneko, Masahiko, Kobayashi, Toshimitsu, Minowa, Yoshiaki, Kumahara, Kazuo
• Primary Examiner(s): Hajec, Donald T.
• Assistant Examiner(s): Ho, Tan
• Application Number:
  US08/525,737
• Time in Patent Office: 981 Days
• Field of Search: 343/772, 343/775, 343/786, 343/765, 343/878, 343/882
• US Class Current: 343/772
• CPC Class Codes: H01Q 13/00 Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
• CPC Class Codes: H01Q 19/13 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination H01Q19/15 takes precedence
• CPC Class Codes: H01Q 23/00 Antennas with active circuits or circuit elements integrated within them or attached to them
• CPC Class Codes: H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving

Abstract

An antenna integral-type transmitter/receiver system to be installed outdoors and used for transmission and reception of radio signals. The object is to provide a small, lightweight antenna integral-type transmitter/receiver system formed of the reduced number of parts and assembling steps. The antenna integral-type transmitter/receiver system consists of a housing having one end surface in which an opening is formed and the other end surface in which an antenna mounting surface is formed, and including a transmitter/receiver function unit formed of a waveguide circuit unit, a high-frequency electrical circuit unit, and an intermediate frequency electrical circuit unit; an antenna connected to the transmitter/receiver function unit mounted on the other end surface of the housing; and a cover member for closing the opening of the one end surface of the housing. The waveguide circuit unit and the high-frequency electrical circuit unit form a first unit. The intermediate frequency electrical circuit unit forms a second unit. The first unit and the second unit are arranged so as to be stacked in the housing.

Claims

1. An antenna integral-type transmitter/receiver system comprising:

a housing (5) having one end surface in which an opening (5B) is formed and the other end surface in which an antenna mounting surface (5A) is formed, and including a transmitter/receiver function unit (13) formed of a waveguide circuit unit (8), a high-frequency electrical circuit unit (2), and an intermediate electrical circuit unit (3) inside the housing;

an antenna (7) connected to said transmitter/receiver function unit (13) mounted on the other end surface of said housing (5); and

a cover member (6) for closing the opening (5B) of the one end surface of said housing (5);

said waveguide circuit unit (8) and said high-frequency electrical circuit unit (2) forming a first unit (10),

said intermediate electrical circuit unit (3) forming a second unit (11),

said first unit (10) and said second unit (11) being arranged so as to be stacked in said housing (5),

wherein the electrical circuit unit in each of said first unit (10) and said second unit (11) is arranged on a common printed wiring board (12).

2. The antenna integral-type transmitter/receiver system according to claim 1, wherein said printed wiring board (12) and said waveguide circuit unit (8) are arranged in said housing in the order of said printed wiring board (12) and said waveguide circuit unit (8), and wherein said waveguide circuit unit (8) is connected to said antenna (7) via said opening (14) formed in the middle portion of said printed wiring board (12).

3. The antenna integral-type transmitter/receiver system according to claim 1, wherein said waveguide circuit unit (8) and said printed wiring board (12) are arranged in said housing (5) in the order of said waveguide circuit unit (8) and said printed wiring board (12).

4. The antenna integral-type transmitter/receiver system according to any one of claims 1, 2 or 3, wherein said high-frequency electrical circuit unit (2) and said waveguide circuit unit (8) are arranged coaxially around a waveguide input/output unit (8D) connected to said antenna (7) in said waveguide circuit unit (8) and wherein said intermediate frequency electrical circuit unit (3) and power supply unit (4) are arranged outside said high-frequency electrical circuit unit (2) and said waveguide circuit unit (8).

5. The antenna integral-type transmitter/receiver system according to claim 1, wherein said housing (5) has its vertically and horizontally symmetrical outline and can be rotated at 90°

to perform a horizontal/vertical conversion while the housing (5) is attached with said antenna (7).

6. The antenna integral-type transmitter/receiver system according to claim 1, further comprising a shield cover formed on the fixture surface of said printed wiring board (12) in said housing (5), said shield cover having a trench, groove (5C), or separation unit (5D) to relieve parts or leads assembled on said printed wiring board (12).

7. The antenna integral-type transmitter/receiver system according to claim 1, wherein said printed wiring board (12) is assembled inside said housing (5) via a base member (17).

8. The antenna integral-type transmitter/receiver system according to claim 7, wherein said base member (17) has a trench, groove (5C), or separation unit (5D) which relieves parts or leads assembled on said printed wiring board (12), said base member (17) acting as a shield cover.

9. The antenna integral-type transmitter/receiver system according to claim 1, wherein the antenna mounting surface (5A) of said housing (5) is used as a ground conductor and a base plate for a plane antenna (7A).

10. The antenna integral-type transmitter/receiver system according to claim 1, wherein said antenna mounting surface (5A) of said housing (5) is used as a main reflector of a parabola antenna.

11. The antenna integral-type transmitter/receiver system according to claim 1, further comprising a sheet heater (18) arranged inside said cover member (6).

12. The antenna integral-type transmitter/receiver system according to claim 1, further comprising an external interface connector (15) and a positional alignment member (16) arranged on an outer side surface of said housing (5) coaxially with respect to the antenna mounting center portion (O) and over a diagonal line (L) crossing said housing from the end surface to end surface.

13. The antenna integral-type transmitter/receiver system according to claim 1, wherein said housing (5) and said cover member (6) are made of a good conductive and good refractory member.

14. The antenna integral-type transmitter/receiver system according to claim 1, further comprising a device mounting fitment (20) arranged between said housing (5) and said antenna (7).

15. The antenna integral-type transmitter/receiver system according to claim 14, further comprising a device support member (21) for supporting said housing (5) via said device mounting fitment (20), and an attitude adjusting member (25) mounted on said device support member (21) for adjusting the attitude of said antenna (7) and said housing (5).

16. The antenna integral-type transmitter/receiver system according to claim 1, further comprising a device support member (21A) mounted on said housing (5) for supporting said housing (5) and said antenna (7), and an attitude adjusting unit (25A) mounted on said device support member (21A) for adjusting the attitude of said housing (5) and said antenna (7).

17. The antenna integral-type transmitter/receiver system according to claim 1, further comprising a sunshade cover (23) mounted on said housing (5) for covering said housing (5).

18. The antenna integral-type transmitter/receiver system according to claim 1, wherein a through opening corresponding to a waveguide is formed in the antenna mounting surface (5A) of said housing (5), said through opening acting as the device input/output unit (8D).

19. The antenna integral-type transmitter/receiver system comprising:

a housing (105) having an opening (105A) formed on one end surface thereof and including internally an intermediate frequency electrical circuit portion (3);

a base plate (117) which closes one end surface of said housing, said base plate on which a waveguide circuit unit (8) and a high-frequency electrical circuit unit (2) forming a transmission and reception function unit are mounted on the side surface of said housing (105), together with said intermediate frequency electrical circuit unit 3, said base plate having an antenna mounting surface (117A) formed on the opposite side surface to said housing (105); and

an antenna (7) connected to said waveguide circuit unit (8) on said antenna mounting surface (117A) of said base plate (117).

20. The antenna integral-type transmitter/receiver system according to claim 19, wherein a through opening (80) corresponding to said waveguide (8C) is formed on said antenna mounting surface (117A) in said base plate (117), said through opening (80) acting as a device input/output portion (8D).

21. The antenna integral-type transmitter/receiver system according to claim 19, wherein said antenna mounting surface (117A) of said base plate (117) is formed as a device mounting fixture portion (90).

22. The antenna integral-type transmitter/receiver system according to claim 19, wherein said housing (105) is made of a synthetic resin housing (105);

and wherein said device mounting fixture portion (90) is mounted on said antenna mounting surface (117A) of said base plate (117) which covers the opening (105A) of said housing (105).

23. The antenna integral-type transmitter/receiver system according to claim 19, wherein a display window (60) is formed on the end surface facing the end surface of said opening (105A) in said housing (105);

and wherein said housing (105) includes a display unit (70) for displaying through said display window (60).

24. An antenna integral-type transmitter/receiver system comprising:

a housing (5) having one end surface in which an opening (5B) is formed and the other end surface in which an antenna mounting surface (5A) is formed, and including a transmitter/receiver function unit (13) formed of a waveguide circuit unit (8), a high-frequency electrical circuit unit (2), and an intermediate electrical circuit unit (3) inside the housing;

an antenna (7) connected to said transmitter/receiver function unit (13) mounted on the other end surface of said housing (5); and

a cover member (6) for closing the opening (5B) of the one end surface of said housing (5),

said waveguide circuit unit (8) and said high-frequency electrical circuit unit (2) forming a first unit (10),

said intermediate electrical circuit unit (3) forming a second unit (11),

said first unit (10) and said second unit (11) being arranged so as to be stacked in said housing (5),

wherein said high-frequency electrical circuit unit (2) and said waveguide circuit unit (8) are arranged coaxially around a waveguide input/output unit (8D) connected to said antenna (7) in said waveguide circuit unit (8), and

wherein said intermediate frequency electrical circuit unit (3) and power supply unit (4) are arranged outside said high-frequency electrical circuit unit (2) and said waveguide circuit unit (8).