Performance-optimized dual-frequency interphone antenna

Abstract

The utility model belongs to the technical field of interphones, and particularly relates to a performance-optimized dual-frequency interphone antenna, which comprises an antenna injection molding shell, an interphone radiation body, an insulator, a central pin, a joint shell, an internal mold injection molding, a positioning radiator, a fixed plastic rod and an identification color ring, and is characterized in that the joint shell, the insulator and the central pin form a standard 50-ohm SMA connector; the talkback radiation body and the central needle are welded together, the talkback radiation body and the central needle are connected through riveting, the talkback radiation body is fixed through injection molding in the internal mold injection molding process, and the talkback radiation body and the positioning radiation body are isolated through a fixing plastic rod. The identification color ring is adhered to the bottoms of the connector shell and the antenna injection molding shell, and the antenna injection molding shell wraps all parts through injection molding. According to the utility model, the contradictory relationship between the antenna length and the frequency edge performance can be solved, and the densely wound spring which has the minimum influence on the talkback bandwidth is selected as the radiator, so that the performance is improved to the greatest extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of intercoms, and particularly relates to a performance-optimized dual-frequency intercom antenna. Background Art

[0002] The essence of a helical antenna is a monopole antenna. Making it into a spiral shape can greatly shorten its length. However, as the length is shortened, the antenna gain decreases and the bandwidth increases. Around 9cm becomes a more suitable length. However, this is the performance under a single intercom frequency band. When a positioning frequency band is added, the bandwidth will be seriously affected. The performance near the high and low frequency points cannot meet the call distance requirements.

[0003] The existing long antennas of two-way radios are too long and their appearance cannot meet market demand. Short antennas can be used for single-way radios, but the performance near high and low frequency points in the dual-band design is poor. Therefore, we propose a performance-optimized dual-band two-way radio antenna to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a performance-optimized dual-band intercom antenna, which can solve the contradictory relationship between antenna length and frequency edge performance, select a densely wound spring with minimal impact on the intercom bandwidth as a radiator, and maximize performance.

[0005] The technical solutions adopted by this utility model are as follows:

[0006] The performance-optimized dual-band intercom antenna includes an antenna injection-molded housing, an intercom radiator body, an insulator, a center pin, a connector housing, an inner mold injection, a positioning radiator, a fixing plastic rod, and an identification color ring.

[0007] In a preferred embodiment, the connector housing, the insulator and the center pin form a standard 50-ohm SMA connector.

[0008] In a preferred solution, the positioning radiator and the center pin are welded together, and the positioning radiator and the center pin are connected by riveting.

[0009] In a preferred embodiment, the inner mold injection fixes the intercom radiation body by injection molding, and the intercom radiation body and the positioning radiation body are isolated by a fixed plastic rod.

[0010] In a preferred solution, the identification color ring is adhered to the connector housing and the bottom of the antenna injection-molded housing, and the antenna injection-molded housing wraps all components through injection molding.

[0011] The technical effects achieved by this utility model are:

[0012] The signal generated by the antenna's spiral radiator is in the intercom frequency band, which is connected in parallel with the shorter central positioning signal radiator. Together, they form a loop through the center pin and the intercom mainboard radiation circuit. The various dimensions of the spiral radiator are very critical. The spacing between the springs, the spring diameter, the wire diameter and the coating directly affect the final performance. The spring length is slightly adjusted, and the positioning radiator also uses a densely wound spring with the least impact on the intercom bandwidth as the radiator, which can maximize performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the performance-optimized dual-band walkie-talkie antenna of the present utility model;

[0014] Figure 2 This is a schematic diagram of the interior of the performance-optimized dual-band walkie-talkie antenna of the present invention;

[0015] Figure 3 for Figure 2 Schematic diagram at point A in the middle.

[0016] In the figure: 1 Antenna injection molding shell, 2 Intercom radiator body, 3 Insulator, 4 Center pin, 5 Connector shell, 6 Inner mold injection, 7 Positioning radiator, 8 Fixing plastic rod, 9 Identification color ring. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0018] See also Figure 1-3 The utility model provides a performance-optimized dual-band walkie-talkie antenna, including an antenna injection-molded shell 1, an intercom radiation body 2, an insulator 3, a center pin 4, a connector shell 5, an inner mold injection 6, a positioning radiator 7, a fixing plastic rod 8 and an identification color ring 9.

[0019] The connector housing 5 , the insulator 3 and the center pin 4 form a standard 50-ohm SMA connector.

[0020] The radiator 2 and the center pin 4 are welded together, and the radiator 7 and the center pin 4 are connected by riveting.

[0021] The inner mold injection 6 fixes the intercom radiation body 2 through injection molding, and the intercom radiation body 2 and the positioning radiation body 7 are isolated by a fixed plastic rod 8.

[0022] The identification color ring 9 is adhered to the connector housing 5 and the bottom of the antenna injection molded housing 1 , and the antenna injection molded housing 1 is encased with components by injection molding.

[0023] In the present invention, the signal generated by the antenna spiral radiator is in the intercom frequency band, which is connected in parallel with the shorter central positioning signal radiator, and together they form a loop with the intercom mainboard radiation circuit through the center pin 4. The various dimensions of the spiral radiator are very critical. The spacing between the springs, the diameter of the spring, the wire diameter and the coating directly affect the final performance. The spring length is slightly adjusted, and the positioning radiator also uses a densely wound spring with the least impact on the intercom bandwidth as the radiator to maximize performance.

[0024] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. Performance optimized dual-band walkie-talkie antenna, featuring: The invention comprises an antenna injection-molded shell (1), an intercom radiation body (2), an insulator (3), a center pin (4), a connector shell (5), an inner mold injection (6), a positioning radiation body (7), a fixing plastic rod (8), and an identification color ring (9).

2. The performance-optimized dual-band walkie-talkie antenna according to claim 1, characterized in that: The connector housing (5), the insulator (3) and the center pin (4) form a standard 50-ohm SMA connector.

3. The performance-optimized dual-band walkie-talkie antenna according to claim 1, characterized in that: The intercom radiation body (2) and the center pin (4) are welded together, and the positioning radiation body (7) and the center pin (4) are connected by riveting.

4. The performance-optimized dual-band walkie-talkie antenna according to claim 1, characterized in that: The inner mold injection (6) fixes the intercom radiation body (2) through injection molding, and the intercom radiation body (2) and the positioning radiation body (7) are isolated by a fixed plastic rod (8).

5. The performance-optimized dual-band walkie-talkie antenna according to claim 1, characterized in that: The identification color ring (9) is adhered to the connector housing (5) and the bottom of the antenna injection-molded housing (1), and the antenna injection-molded housing (1) wraps all components through injection molding.

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