超短波跳频发射机

Ultrashort-wave frequency hopping transmitter

Abstract

The present invention discloses an ultrashort-wave frequency hopping transmitter, which comprises an ultrashort-wave frequency hopping transmission module, a medium-frequency input end, a first local oscillation signal input end, a second local oscillation signal input end and a control module, wherein the frequency hopping transmission module is formed by successively connecting a power control module A, a first frequency mixing module, a SAW filtering module, a first low noise amplification module, a second frequency mixing module, a wideband numerical control electric tuning filter, a power control module, a second low noise amplification module and a power amplification module B. The present invention has the beneficial effects that: through adoption of a dual-frequency superheterodyne reception mode and the frequency selection mode of the wideband numerical control electric tuning filter and simultaneously adoption of the function control module, time-division channel control is realized; the power control response speed, the frequency hopping switching speed, the isolation and the clutter inhibiting capability of an entire machine are improved; and meanwhile, on the basis of not affecting the original functions and performance indexes of wireless communication equipment, the performance index requirements of the data transmission error code rate and the voice communication intelligibility for the wireless communication equipment are improved.
本发明公开了超短波跳频发射机,它包括超短波跳频发射模块、中频输入端、第一本振信号输入端、第二本振信号输入端以及控制模块,跳频发射模块由依次连接功控模块A、第一混频模块、声表滤波模块、第一低噪放模块、第二混频模块、宽带数控电调谐滤波器、功率控制模块、第二低噪放模块以及攻放模块B组成。本发明的有益效果是:采用双频超外差接收方式和宽带数控电调谐滤波器选频的方式,同时采用功控模块,实现时分信道控制,提高了整机功控响应速度、跳频切换速度和隔离度以及杂波抑制能力。同时在不会影响无线通信设备原有的功能和性能指标的基础上,提高了无线通信设备数据传输误码率和语音通讯可懂度性能指标要求。

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