Detailed Explanation of 802.11 Protocol
802.11b/g/n is defined in the 2.4GHz frequency band, and 802.11a/n/ac works in the 5GHz frequency band.
802.11:
It works in the 2.4G band and provides a transmission rate […]
Detailed Explanation of Cellular Antenna
This article explains the detailed specification index of Cellular Antennas.
A Quick Review of Antennas
An antenna is a device that converts electric power into radio waves, and vice versa. It is typically used with a radio transmitter or receiver. When transmitting, […]
3dB Hybrid Coupler Applications
What is 3dB Hybrid Coupler?
3dB Hybrid Coupler is a kind of directional coupler.
When used as a power combiner, the two input signals are connected to each other as isolated ports, while the coupling output and direct output ports are reciprocal […]
Advantages of Massive MIMO
1. What is Massive MIMO?
Massive MIMO, the full English name is: massive multiple input multiple output. Because its English name is too long, it is called “massive MIMO” for short. Its Chinese name, which is translated from English, is called […]
How To Use Vector Network Analyzer To Measure Filter?
In this article, we will talk about How to use a vector network analyzer to measure filter.
Step 1 Set the test parameters of vector network analyzer e5063a
Set the test parameters of vector network analyzer e5063a: start and end frequencies, if […]
Causes for Radio Frequency Interference in Wireless Communication Network
Nowadays, the possible causes of RF interference are increasing. Some are obvious and easy to track, while others are very subtle and difficult to identify. Although a carefully designed base station can provide some protection, in most cases, the interference […]
How To Design Directional Coupler Circuit?
In radio frequency (RF) applications such as automotive radar, 5G cellular and Internet of things, the use of RF sources in electronic systems is increasing day by day. All these RF sources need to try to monitor and control […]
Network Analysis and Network Analyzer
A system formed by the interconnection of several electrical components is called a network. “Network” can be used as a synonym for circuit, “network analysis” is circuit analysis, but it is rarely said, which adds a bit of mystery. In […]
RF Power Test
Since the birth of the first radio transmitter, engineers have been concerned about RF power measurement, which is still a hot topic today. Whether in the laboratory, production line, or teaching, power measurement is essential.
In the early stage of radio […]
Key Factors That Affect Antenna Intermodulation
The third-order intermodulation of the base station antenna plays an important role in system operation, which not only affects the quality of communication signal, but also an important performance of the R&D level of antenna enterprises. The following is a […]