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Total Receiving Sensitivity (TIS)
The TIS of an antenna is the total omnidirectional sensitivity of the antenna, which refers to the average receiving sensitivity of the receiver in all directions, relative to the sensitivity of the conductive receiver.
TIS (Total Isotropic Sensitivity) reflects the sensitivity index of the entire radiating spherical antenna reception. It reflects the receiving sensitivity of the antenna, which is related to the antenna's conduction sensitivity and radiation performance.
1. Introduction
Total Isotropic Sensitivity (TIS) is an important parameter for measuring the reception performance of wireless communication devices, which directly affects the communication quality and coverage range of the devices. This article will provide a detailed introduction to the definition, measurement methods, importance, and application of TIS in wireless communication.
2. Definition of Total Receiving Sensitivity (TIS)
Total Received Sensitivity (TIS) refers to the average sensitivity of wireless communication devices to receive signals in all directions. It comprehensively considers antenna gain, receiver sensitivity, and the receiving performance of the device in different directions, usually expressed in dBm.
3. Calculation formula for TIS
TIS can be calculated using the following formula:
TIS = 10 * log10 (1 / (1/N * Σ (1 / Sensitivity_i)))
Among them, N is the total number of measurement points, and Sensitivity_i is the sensitivity of the i-th measurement point.
4.The Importance of TIS
Communication quality: A high TIS value indicates that the device can maintain good communication quality even in weak signal environments.
Coverage: A high TIS value can expand the coverage range of the device and reduce signal blind spots.
User experience: Improving TIS can enhance users' communication experience, reduce call drop rates and data interruptions.
5. Measurement method of TIS
Omnidirectional measurement: measuring the receiving sensitivity of equipment in different directions using an omnidirectional antenna in a dark room.
Multi point measurement: Conduct sensitivity testing at multiple measurement points to ensure coverage in all directions.
Automated testing system: Use automated testing systems for fast and accurate TIS measurements.
6. Factors affecting TIS
Antenna performance: The gain and directionality of the antenna directly affect TIS.
Receiver sensitivity: The noise figure and linearity of the receiver affect TIS.
Equipment design: The circuit design, shielding, and filtering measures of the equipment affect TIS.
7. Optimization methods for TIS
Optimize antenna design: Improve antenna performance by optimizing antenna structure and materials.
Improve receiver design: reduce the noise figure of the receiver and improve linearity.
Enhance shielding and filtering: reduce external interference and improve reception sensitivity.
8. Application areas of TIS
Mobile communication: Improve the communication performance of mobile devices such as smartphones and tablets.
IoT devices: Enhance the signal reception capability of IoT devices to ensure stable connections.
Wireless network: Optimize the coverage and signal quality of wireless routers and access points.
Satellite communication: Improve the receiving sensitivity of satellite terminal equipment and enhance communication capabilities.
9. Common issues with TIS
The relationship between TIS and TRP: TIS and total radiated power (TRP) are two important parameters for measuring device performance, focusing on receiving and transmitting performance, respectively.
How to improve TIS: Enhance shielding and filtering measures by optimizing antenna and receiver design.
TIS testing environment: Measurements need to be taken in a non reflective and interference free darkroom to ensure accuracy.
10. Conclusion
Total Receiving Sensitivity (TIS) is a key performance indicator of wireless communication devices, which directly affects communication quality, coverage range, and user experience. By rational design and optimization, the TIS of the equipment can be significantly improved, enhancing its market competitiveness.
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