CN212324096U - Multichannel receiving and dispatching subassembly - Google Patents

Abstract

The utility model discloses a multichannel receiving and dispatching subassembly, including two way receiving channel and the transmitting channel of the same kind. The utility model can output the intermediate frequency signal after amplifying and filtering the input broadband signal through twice frequency conversion, and simultaneously, attenuate the input intermediate frequency signal by filtering and then convert the signal into the multichannel receiving and transmitting equipment of the broadband signal through twice frequency conversion; and has the characteristics of high output spurious suppression and small fluctuation in the intermediate frequency band in the full working frequency band.

Description

Multichannel receiving and dispatching subassembly

Technical Field

The utility model relates to the field of communication technology, especially, relate to a multichannel receiving and dispatching subassembly.

Background

The receiving and transmitting component is used as common equipment in a radio frequency microwave system, can simultaneously realize signal receiving and transmitting, and is widely applied to electronic system equipment such as electronic reconnaissance, electronic countermeasure, satellite communication and the like. The traditional design mode adopts an internal heterodyne multi-intermediate frequency mode to realize broadband frequency conversion, and the internal and external difference frequency conversion mode has a plurality of intermediate frequencies, so that a link is complex and large in size, and high-order stray is difficult to process in the receiving and transmitting frequency conversion; the second complicated link causes the output signal spurious suppression to be poor and the flatness in the intermediate frequency band in the full operating frequency band to be large when the wide intermediate frequency signal is output.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve the above problems by providing a multi-channel transceiver module, which comprises two receiving channels and one transmitting channel; the receiving channel comprises a first low noise amplifier, a first radio frequency attenuator, a first integrated filter bank, a first mixer, a first intermediate frequency filter, a first intermediate frequency amplifier, a phase shifter, a second mixer, a second intermediate frequency filter and a second intermediate frequency amplifier which are connected in sequence; the transmitting channel comprises a third intermediate frequency filter, a numerical control attenuator, a third mixer, a second integrated filter bank, a first output amplifier, a fourth mixer, a third integrated filter bank, a second output amplifier, a first local vibration generator and a second local vibration generator which are sequentially connected; the first local oscillation generator is connected with the input end of the first frequency mixer and the input end of the fourth frequency mixer; and the second local oscillator generator is connected with the input ends of the second mixer and the third mixer.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model discloses a two superheterodyne frequency conversions, receiving the branch road and obtaining intermediate frequency signal through twice frequency conversion with the amplified filtering of incoming signal, the intermediate frequency signal filtering attenuation of transmission branch road with the input obtains the transmission signal through twice frequency conversion.

The beneficial effects of the utility model reside in that: the utility model discloses can be with 2GHz ~ 18GHz broadband signal of input, through the frequency conversion output 1.3GHz ~ 2.3GHz intermediate frequency signal twice after the amplification filtration, through the broadband signal multichannel transceiver equipment of frequency conversion to 2GHz ~ 18GHz twice after the intermediate frequency signal filtering attenuation of 1.3GHz ~ 2.3GHz of input simultaneously; and has the characteristics of high output spurious suppression and small fluctuation in the intermediate frequency band in the full working frequency band.

Drawings

Fig. 1 is a schematic diagram of the present invention.

In the figure: A. c-a receiving channel; b-a transmission channel; first low noise amplifier; ② a first radio frequency attenuator; ③ a first integrated filter bank; fourthly-a first mixer; fifthly, a first intermediate frequency filter; sixthly, a first intermediate frequency amplifier; seventhly, a phase shifter; eighty-a second mixer; ninthly-a second intermediate frequency filter; r — second intermediate frequency amplifier;

-a third intermediate frequency filter;

-a digitally controlled attenuator;

-a third mixer;

-a second integrated filter bank;

-a first output amplifier;

-a fourth mixer;

-a third integrated filter bank;

-a second output amplifier;

-a firstThe vibration generator;

-a second local oscillator generator.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the utility model relates to a multi-channel transceiver module, which comprises two receiving channels and one transmitting channel; the receiving channel comprises a first low noise amplifier, a first radio frequency attenuator, a first integrated filter bank, a first mixer, a first intermediate frequency filter, a first intermediate frequency amplifier, a phase shifter, a second mixer, a second intermediate frequency filter and a second intermediate frequency amplifier which are connected in sequence; the transmitting channel comprises a third intermediate frequency filter, a numerical control attenuator, a third mixer, a second integrated filter bank, a first output amplifier, a fourth mixer, a third integrated filter bank, a second output amplifier, a first local vibration generator and a second local vibration generator which are sequentially connected; the first local oscillation generator is connected with the input end of the first frequency mixer and the input end of the fourth frequency mixer; and the second local oscillator generator is connected with the input ends of the second mixer and the third mixer.

The utility model discloses the index of specifically realizing is as follows:

receiving a channel: receiving frequency: 2 GHz-18 GHz; output frequency: 1.3 GHz-2.3 GHz; receiver gain is greater than or equal to 35 dB; the receiver noise figure is less than or equal to 9 dB; spurious suppression is greater than or equal to 45 dBc; gain control: 60dB, stepping by 1 dB; channel amplitude uniformity: less than or equal to 1.5 dB; phase consistency among channels: less than or equal to ± 20 °; flatness in the band: less than or equal to ± 2 dB.

Emission channel: input frequency: 1.3 GHz-2.3 GHz; input power: -10dBm to-20 dBm; output frequency: 1.3 GHz-2.3 GHz; output power control range: 30dB, 1dB step; stray suppression: greater than or equal to 30 dBc; output power: 5 +/-2 dB; phase noise: less than or equal to-85 dBc @1 kHz.

The first integrated filter bank and the third integrated filter bank are adopted, stray can be effectively filtered, and the performance of the transceiving component is improved.

The gain control and calibration of the transceiving channel are realized by adopting the numerical control attenuation of the first radio frequency attenuator and the numerical control attenuator; the phase shifter is adopted, so that the phase adjustment of a receiving channel can be realized; and each level of band-pass filter in the frequency conversion link is used for filtering out-of-band intermodulation stray and local oscillator leakage and image frequency signals.

The utility model discloses can be with 2GHz ~ 18GHz broadband signal of input, through the frequency conversion output 1.3GHz ~ 2.3GHz intermediate frequency signal twice after the amplification filtration, through the broadband signal multichannel transceiver equipment of frequency conversion to 2GHz ~ 18GHz twice after the intermediate frequency signal filtering attenuation of 1.3GHz ~ 2.3GHz of input simultaneously; and has the characteristics of high output spurious suppression and small fluctuation in the intermediate frequency band in the full working frequency band.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims (1)

1. A multi-channel transceiver module is characterized by comprising two receiving channels and one transmitting channel; the receiving channel comprises a first low noise amplifier (1), a first radio frequency attenuator (2), a first integrated filter bank (3), a first mixer (4), a first intermediate frequency filter (5), a first intermediate frequency amplifier (6), a phase shifter (7), a second mixer (8), a second intermediate frequency filter (9) and a second intermediate frequency amplifier (10) which are connected in sequence; the transmitting channel comprises a third intermediate frequency filter (11), a numerical control attenuator (12), a third mixer (13), a second integrated filter bank (14), a first output amplifier (15), a fourth mixer (16), a third integrated filter bank (17), a second output amplifier (18), a first local vibration generator (19) and a second local vibration generator (20) which are connected in sequence; the first local oscillation generator (19) is connected with the input end of the first mixer (4) and the input end of the fourth mixer (16); the second local oscillator generator (20) is connected with the input ends of the second mixer (8) and the third mixer (13).

Images