JPS59168702A - High-gain communication whip antenna - Google Patents

Abstract

PURPOSE:To attain a product having a flat outer circumference as a whole by constituting the antenna with plural unit members being element components of the high gain whip antenna incorporating a phase converting element so as to be expanded and contracted in the telescopic way. CONSTITUTION:Members b, c,...n to be positioned at the middle and the lower end among the unit members a, b, c,...n being plural element components are formed each as a cylinder 1 made of a hard insulating material having a hollow hole 6. A radiating element section 2 is formed to the cylinder 1. A phase converting element section 3 is formed to the middle part of >=1 of the cylinder 1 of the unit members positioned at the middle. The radiating element section 2 is formed continuously above and under the element section 3 and an insulating coating 7 is applied to the outer face. Then, the unit member of the lower stage is extracted successively in the telescopic way by coupling a lower connecting metallic fixture 5 of an upper stage unit member to an upper connecting metallic fixture 4 of the lower stage unit member.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the creation of a high-gain whip antenna for communication, which makes it possible to expand and contract the high-gain whip antenna, and to use it as an omnidirectional high-gain whip antenna for nocusonal radio and other applications. The aim is to sufficiently increase the usability of the system.

2. Description of the Related Art It is conventionally known to alternately arrange radiating elements and phase conversion elements in order to increase the gain in communication whip antennas. In other words, such a conventional high-gain whip antenna has a radiating element and a phase conversion element connected to each other, and these connections are mechanically and accurately made, and the phase conversion element is As shown in Fig. 8, the wire of the radiating element 11 itself is formed as a coiled part 12 on its extension, or as shown in Fig. 9, a coil wound around another insulating material is used to radiate the wire. There are some that are connected to the element 11, but none of them are connected to the element 11.
Even if the phase conversion cord 12 or 12a is enlarged in the shape of a lump, it is necessary to form a protective sheath over the portion. However, in such conventional high-gain antennas, the phase conversion element part always has a considerably larger diameter than the radiating element part, and the entire part must be electrically connected accurately, so it is not mechanically stable. As is well known, the straight rod shape formed by the connection is kept as is, and in particular, the radiating element 11 portion has a small diameter, and the phase conversion element portion 12 or 12a has a large diameter. has a strong tendency to oscillate when the axle it is equipped with is driven, and air resistance acts significantly on the phase conversion element, so it oscillates significantly with slight running or vibration, and under such oscillating conditions, In order to ensure an electrically stable connection relationship, it is essential to maintain the straight rod shape as described above. However, when this type of high-gain whip antenna, which remains in the shape of a straight rod, is mounted on a car body, the entire length always remains protruding from the car body surface, and there is a risk of breakage or damage. This possibility is extremely inconvenient when washing the car or parking it in the garage. In addition, in the above-mentioned conventional products, it is necessary to use a special material with corrosion resistance, taking into consideration outdoor usage conditions.

The present invention has been devised after repeated studies in view of the above-mentioned circumstances, and is capable of expanding and contracting the above-mentioned high-gain communication whip antenna by using special unit members. Moreover, it has succeeded in ensuring accurate high-gain reception capability. That is, to explain the specific embodiments of the present invention shown in the accompanying drawings, we will explain one of the general structural relationships of the present invention.
An example is the passage shown in FIGS. 1 to 3, which is composed of a plurality of unit members a, 'b, c...n, which are element carriers, and these unit members a... ...N should be located at the middle or lower end of the instep, c...N has a cylindrical body 1 made of a hard insulator with a hollow hole 6, and the cylindrical body 1 has a radiation source. The element part 2 is formed, but at least one unit member b in the n-1 cylindrical body 1 to be located at least in the middle is provided with the phase conversion element part 3 in the middle part. form,
The radiation element part 2 is continuously formed above and below the phase conversion element part 3, and an insulating coating T is applied to the outer surface of the radiation element part 2. Further, an annular upper connecting fitting 4 and an annular lower connecting fitting 5 are attached to the upper and lower parts of the unit members C...n-1, respectively, and are connected to the radiating element section 2. To ensure accurate connection, the terminal KI of each radiating element section 2 is
) is formed continuously, and the inner surface of the upper connecting fitting 4 is formed with a tapered connecting surface 4a, and the outer surface of the lower connecting fitting 5 is also provided with a tapered connecting surface 5&. Only the upper connecting fitting is attached to the cylindrical body 1 of the base end unit member n, and the shape corresponding to the lower connecting fitting is adopted at the lower end of the top end unit member a. However, the above-mentioned unit members a.
・・・・・・n means that the diameter gradually decreases from the lower stage to the upper stage, and the lower connecting fitting 5 of the upper unit member is joined to the upper connecting fitting 4 of the lower unit member. The lower unit members are pulled out one after another in a telescoso style, and when retracted, the lower edge of the lower connecting fitting 5 of the upper unit member touches the upper edge of the lower connecting fitting 5 of the lower unit member, and an integral netting operation is performed. It is designed so that the steps are performed sequentially. The above-described radiation element part 2 and phase conversion element part 3 in the cylindrical body 1 can be formed by a printing method as shown in FIG. 4, or by using an insulating cylindrical body as shown in FIG. It can be formed by embedding a wire material in the thickness of 1. Furthermore, as shown in FIG. 6, a phase conversion element part 3 formed by winding a wire material in a coil shape is attached to a radiation element part 2 formed by printing or adhering strip-like thin pieces into a recess formed in the cylinder body 1. It is also possible to adopt a structure in which an insulating coating γ is applied to the outer surface of a structure that is interposed at the step portion 1b and connected by soldering or the like. Further, as shown in FIG. 7, the cylindrical body is formed by printing on a flat printed circuit board 8 and forming it into a cylindrical shape.
The coiled portion 3a for forming can be connected by soldering or the like.

The phase conversion element portion 3 may be formed into a coil shape or may be continuously bent in a waveform or a rectangular waveform in the vertical direction.

As shown in the figure, the uppermost unit member a may be a solid rod-shaped member, and the heir 18 is attached to the top end thereof. It is clear that the eldest child 18 can be manually operated by grasping it with one's fingertips in order to extend and retract it. It is automatically extended and retracted using an automatic telescoping mechanism like this. The lowest unit member n is generally called the antenna base tube, and the cable from the receiver is connected to it.

This is done using a well-known through hole, and when used in a vehicle, it is attached to the body with only the top end slightly protruding, so that each unit member a......n
-1 in the retracted state, there is almost no protrusion from the vehicle body surface.

It is clear that a plurality of phase conversion element sections 3 as described above may be provided in the unit member b...n-1 as described above, and in some cases, this phase conversion element section 3 may be provided. It is possible to adopt a structure in which only the radiating element section 2 is formed without providing the radiating element section 2.

To explain the operation of the device according to the present invention as described above, each unit member is extended by the push-out or pull-out operation force acting on the uppermost unit member a, so that each unit member is extended as shown in FIGS. 1 and 2. The connecting fittings 4.5 are connected, and each element part 2.3 is electrically connected in series, and a mechanically stable connection relationship is formed, and the radiation element part and the phase conversion element part are arranged alternately. It is clear that a high-gain whip antenna can be formed, and it can obtain the same receiving function as a conventional straight rod-shaped antenna.

Unit member located at least in the middle or lower end b % n
is a cylindrical body made of insulating material, and even though the diameter of the upper stage is gradually reduced, it generally forms a generally flat outer periphery, and there is no layered bulk in the middle, so it is suitable for automotive use. Even in such a case, there is little air resistance and little vibration, so a stable connection is ensured and the strength is sufficient. Since it is fully compressed when not in use, there is little protrusion from the car body surface, making it suitable for car washes,
It is convenient for entering the garage, etc., and can prevent breakage and other accidents.

Since the unit member b%n is an insulating cylindrical body, it is possible to obtain a lightweight product, and there are no parts that require special tilting during manufacturing, making it easy to manufacture and assemble in mass production. can.

According to the present invention as described above, a high-gain whip antenna incorporating a phase conversion element part is constructed from a plurality of unit members serving as element part carriers, and the part to be located at the middle or lower end of the unit members is provided with a hollow hole. an insulating cylindrical body having an insulating cylindrical body and a radiating element part, and furthermore, a phase conversion element part is also formed continuously to the radiating element part in at least one of the unit members that should be located in the middle, and each unit By providing connecting fittings at the ends of the parts that should be connected to each other, the parts can be expanded and contracted in a telescopic manner, and are provided as products with generally flat outer circumferences, thereby making it easier to wash cars. Not only does it make it easy to store in cars and garages, but it also has low air resistance and excellent strength when used in cars, and is also easy to manufacture and handle, making it advantageous for communications. This invention is industrially very effective because it allows for the production of non-directional antennas that can be used in a variety of directions.

[Brief explanation of drawings]

The drawings show the technical contents of the present invention, and FIG. 1 is a partially cutaway side view showing the general relationship of an example of a high gain whip antenna according to the present invention, and FIG. 2 is an enlarged view of a part thereof. A sectional view, FIG. 3 is a longitudinal sectional view showing its contracted state, and FIG. 4 is an exploded slope view of one unit member.
Figure 5 is a partially cutaway slope view of the modified example, and Figure 6 is a partially cutaway slope view of the modified example.
The figure is a slope view of yet another modification, and Figure 7 is another one.
FIGS. 8 and 9 are side views of conventional high-gain antennas of this type. However, in these drawings, 1 is the cylindrical body 2 is the radiation element part, 3 is the phase conversion element part, 4 is the upper connection fitting, 5 is the lower connection fitting, 6 is the hollow hole, 7 is the insulation coating, and a is the top stage. The unit member b...n-1 indicates an intermediate unit member, and n indicates the lowest unit member. Patent applicant: Nippon Antenna Co., Ltd. Inventor: Yudo Taki
Noboru Saito, Attorney, Patent Attorney Haku
River Qi (Ni-1・-I・7 (No./Wan Jun゛2 Former No. 4 Rui) No. 3' Round No. 〆 Yuan Feng a Yuan Half 9;' Country

Claims (1)

[Claims] A high-gain antenna incorporating a phase conversion element part is composed of a plurality of unit members serving as element part carriers, and the part to be located in the middle or lower end of these unit members is an insulating cylinder having a hollow hole, and a radiating element part. , and furthermore, the phase conversion element section is formed continuously with the radiation element section in one or more of the unit members that should be located at least in the middle, and connected to the ends of each unit member that should be engaged with each other. A high-gain communication whip antenna that is equipped with a metal fitting and is assembled in a telescopically expandable manner.