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Method for determining power gain of active monopole antenna

A technology of antenna power and power gain, applied in the directions of antenna, transmission monitoring, radiating element structure, etc., can solve the problems of short-wave communication link design error, imperfect processing of conventional methods, mismatch of test ports, etc., to avoid waste of resources , the effect of shortening the development cycle and enhancing the application ability

Active Publication Date: 2021-11-19
中国电波传播研究所 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former method is completely calculated by simulation, but some devices included in the active network are difficult to accurately model, such as transmission line impedance converters, etc., so the error is relatively large. The mismatch between the network input terminal and the test port of the network analyzer is serious, and the conventional method is not perfect, which will bring great errors to the subsequent shortwave communication link design and project demonstration

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  • Method for determining power gain of active monopole antenna
  • Method for determining power gain of active monopole antenna
  • Method for determining power gain of active monopole antenna

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Embodiment 1

[0022] Embodiment 1, this embodiment discloses a method for determining the power gain of an active monopole antenna, based on the measured two-port S scattering parameters of the active network, the input impedance of the passive vibrator, the input impedance of the load, and the simulated calculation The directional coefficient and efficiency of the passive oscillator are derived and calculated to obtain the power gain of the active monopole antenna.

[0023] like figure 2 As shown, it is assumed that the input port of the active network is port 1, and the output port is port 2, a 1 , b 1 are the incident and outgoing amplitudes of port 1, respectively, a 2 , b 2 are the incident and outgoing amplitudes of the two ports, respectively, b g It represents the signal amplitude that the passive vibrator can provide to the non-reflection active network. Also assume that Γ 1 is the input reflection coefficient of port 1 of the active network, Γ g , Γ L are the input reflec...

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Abstract

The invention discloses a method for determining power gain of an active monopole antenna, which comprises the following steps of: 1, assuming that an input port of an active network is a port 1 and an output port of the active network is a port 2, and measuring four components of scattering parameters of the two ports of the active network by using a network analyzer; 2, solving a passive oscillator end input reflection coefficient and a load end input reflection coefficient; 3, simulating and calculating the electrical performance of the passive oscillator to obtain the direction coefficient and efficiency of the passive oscillator of the active monopole antenna; and 4, calculating the power gain of the active monopole antenna. According to the method for determining the power gain of the active monopole antenna, actually measured data and calculation data are combined, the principle is simple, special instruments and equipment do not need to be adopted, operability is high, and accuracy is high.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a method for determining the power gain of an active monopole antenna in the field. Background technique [0002] Active monopole antenna is a common antenna form of shortwave receiving antenna. It combines passive vibrator (such as whip antenna and other monopole antenna) with active network. The active network plays the role of protection, matching and amplification. The passive oscillator becomes the input part of the active network, and the active network can be regarded as the loading network of the passive oscillator. Through the amplification of the active network, the bandwidth and gain disadvantages of the passive oscillator antenna itself are compensated, and the impedance characteristics of the passive oscillator are improved. , broaden the working frequency band, improve the signal-to-noise ratio between the active monopole antenna and the entire receiving system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/391H01Q1/36H01Q23/00
CPCH01Q1/36H01Q23/00H04B17/00H04B17/3912Y02D30/70
Inventor 马银圣金珠
Owner 中国电波传播研究所
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