Wireless microphone signal path install#
Wireless microphone signal path code#

In actual use, the antenna polarization is an easily neglected character. Therefore, when users are installing antennas, close attention should be paid to the signal directionality.įigure 1: The vertical radiation pattern of a dipole antenna If the gain is designed to be concentrated toward one direction only, the antenna is called a “Directional Antenna.” The narrower the angle is, the higher the gain value meanwhile, the gain of other directions will decline. As the gain is usually designed to be concentrated to some degree, a value > 0dBi is obtained. As shown in Figure 1, the theoretical maximum gain value of a dipole antenna is about 2.15dBi. The gain value is relative to an isotropic radiator, shown in dBi units, in which “I” represents the isotropic radiator, a virtual sphere in which the signals can transmit or receive towards all directions. A good antenna generally has the input reflection coefficient less than -10dB or VSWR less than 2:1.Īntenna gain indicates the signal transmitting or receiving ability. Its specification is generally labeled with an input reflection coefficient or Voltage Standing Wave Ratio (VSWR). MIPRO receiver antenna input impedance is designed with 50Ω, so you must select an antenna with 50Ω impedance to match perfectly to the receiver. In general, the antenna impedance has two categories: 50Ω and 75Ω. A good antenna generally has the input reflection coefficient less than -10dB or VSWR less than 2:1. A good antenna generally has the input reflection coefficient less than -10dB or VSWR less than 2:1.In general, the antenna impedance has two categories: 50Ω and 75Ω. Frequency is inversely proportional to the length of the antenna, thus the antenna of a VHF system is significantly longer than those of a UHF system.In general, the antenna impedance has two categories: 50Ω and 75Ω. To select an antenna, we should make sure the frequency range is within the frequency range of the receiver, so that the signals received by the antenna can be delivered effectively to the receiver.

Wireless microphone signal path code#

The antenna usually has the frequency range code on it. To choose the correct antenna to be installed on a wireless microphone receiver, we must first identify its frequency range. The main characteristics of the antenna below are as follows:

Wireless microphone signal path install#

The detachable antenna design of MIPRO receivers allows users to choose different types of antennas to install for optimal reception. Therefore, the antenna is the passageway for transmitting and receiving the wireless signals, and its functionality directly affects the signal transmission range and stability. In a wireless microphone system, the signal is transmitted via the transmitting antenna of the transmitter, and is received via the receiving antenna of the receiver. In actual practice, the signal is received via the receiver’s antenna, so the best way to improve the transmission efficiency of the overall system is through improving the characteristics of antennas and the antenna installations. In theory, increasing the sensitivity by 6dB will give twice the receiving distance, but in fact, it is not easy for a user to change the sensitivity. The other option is to increase the sensitivity of the receiver.

Furthermore, the power consumption will increase, considerably reducing the battery life.

In particular, increasing a transmitters’ power is not only limited by telecom regulations, but multi-channel signal interference can be a more serious consequence of doing so.

However, these two characteristics are determined by the manufacturer and cannot be changed arbitrarily by the user. It can be improved by directly increasing the transmitting power or receiving sensitivity. Wireless transmission distance is mainly determined by the sensitivity of the receiver and the power of the transmitter. Antennas determine the actual reception distance and the quality of reception.