Navigation unit
A technology of a navigation device and a metal sheet, applied in the field of navigation, can solve the problems of low sensitivity and low working efficiency of a GPS navigation device, and achieve the effects of low working frequency, enhanced signal receiving sensitivity, and miniaturization.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 2
[0048] Such as Figure 5 As shown, in this embodiment, a space 53 for embedding capacitive electronic components is preset between the first feeder 2 and the first metal sheet 4, and the preset position for embedding the electronic component space may be the first feeder 2 and the first metal sheet 4. Any position between the first metal sheets 4. Figure 4 The middle space 53 is the space for embedding capacitive electronic components in this embodiment. There is a certain capacitance between the first feeder 2 and the first metal sheet 4. Here, the first feeder 2 and the first metal sheet 4 are adjusted by embedding capacitive electronic components. For signal coupling between slices 4, use the formula: It can be seen that the capacitance value is inversely proportional to the square of the operating frequency, so when the required operating frequency is a lower operating frequency, it can be realized by embedding appropriate capacitors or inductive electronic components...
Embodiment 3
[0050] Such as Figure 6 As shown, in this embodiment, a space for embedding inductive electronic components and / or resistors is reserved on the first metal wiring 42 of the first metal sheet, and the space for embedding electronic components is not limited to the one shown in the figure. Space 55 and space 56, and other locations as long as the conditions are met. The purpose of embedding inductive electronic components here is to increase the inductance value of the internal resonant structure of the first metal sheet, thereby adjusting the resonant frequency and working bandwidth of the antenna; same as the first embodiment, the purpose of embedding resistors here is to improve The radiation resistance of the antenna. As for embedding inductive electronic components or resistors, it depends on the needs. In addition, wires are used to short-circuit in the space where electronic components are not embedded. The situation of reserving space on the second metal trace of the...
Embodiment 4
[0052] Such as Figure 7 As shown, in this embodiment, a space for embedding capacitive electronic components is reserved on the first microgroove structure 41 , and the space connects the first metal wires 42 on both sides. The space for embedding electronic components is not limited only to the Figure 5 The space 57 given in , other locations are all available as long as the conditions are met. Embedding capacitive electronic components can change the resonance performance of the first metal sheet, and ultimately improve the Q value and resonance operating point of the antenna. As common knowledge, we know that the passband BW and the resonant frequency w 0 The relationship with the quality factor Q is: BW=w 0 / Q, this formula shows that the larger Q is, the narrower the passband is, and the smaller Q is, the wider the passband is. In addition: Q=wL / R=1 / wRC, wherein, Q is the quality factor; w is the power frequency when the circuit resonates; L is the inductance; R is ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More