Dual Transmit and Four Receive Multi Function L band Transceiver Module

ZD-L-DT/FR

L-band Transceiver Module (L-band transceiver module) consists of two transmitting channels and four receiving units. The receiving channels include Σ, △, Ω and ADS-B IN, which can realize signal reception and down-conversion, and have self-test, amplitude and phase correction functions, and have intermediate frequency and video output. The transmitting channel contains Σ and Ω, which can complete signal up-conversion and power amplification, and also has functions such as transmission detection and isolation. All performance indicators are very accurate.

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L-band Transceiver Module is a high-performance key communication component. In terms of structure, it is a dual-transmit and four-receive module, and the exquisite layout realizes the integration of multiple functions.

In terms of reception, it has Σ, △, and Ω receiving channels, which can accurately realize the reception and down-conversion of multiple mode response signals such as M1-M6. At the same time, the ADS-B IN receiving channel can easily process ADS-B signals. Each receiving channel is equipped with a receiving self-test function, and can also perform amplitude and phase correction on Σ, △, Ω and ADS-B IN channels to ensure the accuracy and stability of signal reception, and has intermediate frequency and video output capabilities.

In terms of transmission function, the two transmission channels of Σ and Ω can up-convert and power amplify the interrogation signals of modes such as M1-M6 to meet the needs of long-distance signal transmission. Transmission detection, transceiver isolation, and standing wave detection functions further improve the reliability and safety of the transmission link.

The performance parameters are strictly controlled, the transmitting frequency is stable at 1030MHz±0.05MHz, the power is ≥57dBm; the receiving center frequency is 1090MHz±0.5MHz, the sensitivity is ≤ -86dBm (Σ, △, Ω channels) and ≤ -90dBm (ADS-B channel), etc. It is widely used in aviation communications, radar monitoring and other fields, providing stable and efficient signal reception and transmission support for related systems.

PerformanceIndexRequirements

Transmitter unit
Transmitting frequency	1030MHIz±0.05MHz
Transmitting power	≥57dBm (transmitting module port power)
Modulation frame signal	AM should be at least 200ns ahead of ASK signal and 300ns behind ASK signal
Duty ratio	≤2%
Reflection detection	Output 3.3V (tentative) when the load standing wave is ≥2.5, and simulate pulse signal alarm
Pulse envelope characteristics	Pulse Width	M1、M2、M3/A and MC	0.8μs±0.05us
		M5 symbol width	1.0625μs~1.375μs
		M6 (similar to M4)	0.5μs±0.05μs
	Pulse rising edge	≤0.1μs
	Pulse falling edge	≤0.2μs
	Pulse top unevenness	≤0.75dB
	Pulse sequence unevenness	≤1.0dB
Harmonic requirements	Second Harmonic	≤-80dB or -50+10log10(P)		Note: P is the peak transmission power, its unit is W.
	Third harmonic	≤-80dB or -50+10log10(P)
	Other harmonics	≤-80dB, Unexpected power output: (-30dBm)
IF interrogation signal input requirements	IF frequency	130MHz±0.05MHz
	IF amplitude	0dBm±2dB
	Modulation method	ASK, MSK and DPSK
	Quantity of channels	2 channels (Σ channel and Ω channel)
	Detection output	≥+3V
Receiving unit
The main performance of Σ, △, Ω receiving channels
Receiving center frequency	1090Mz±0.5MHz
Receive tangent sensitivity	≤-86dBm
Receive dynamic range	≥60dB
Image rejection	≥60dB
Σ, △ channel consistency (uncalibrated)	±1 dB(Amplitude); ≤10°(phase)
Anti-burning	With 1000W (or maximum transmission power) anti-burning capability
Out-of-band rejection	1090MHz±25MHz (OOB), 60dB
IF response signal output requirements	Center Frequency	70MHz±0.05MHz (Local oscillator frequency accuracy error is required to be ≤0.05MHz)
	Amplitude range	-50dBm~+10dBm
	3dB bandwidth	19MHz±1MHz
Input port standing wave ratio	≤1.4 (Design Guarantee)
Noise Figure	≤3dB
Video Output	0V~2V
The main performance of ADS-B channels
Receiving center frequency	1090MHz±0.5MHz
Receive tangent sensitivity	≤-90dBm
Receive dynamic range	≥60dB
Image rejection	≥60dB
Anti-burning	With 1000W (or maximum transmission power) anti-burning capability
Out-of-band rejection	1090MHz±25MHz (OOB), 60dB
IF signal output requirements	Center Frequency	70MHz±0.05MHz (Local oscillator frequency accuracy error is required to be ≤0.05MHz)
	Amplitude range	-50dBm~+10dBm
3dB bandwidth	4MHz~6MHz
Input port standing wave ratio	≤1.4 (Design Guarantee)
Video Output	0V~2V

Broadband RF power amplifier performance Index requirements

NO.	Type	Requirement Name	Requirement No.	Requirement Value	Remark
1	Overall	Working Mode	RF_001	TDD
2		Quantity of RF transceiver channels	RF_002	1T/2R
3		RF transmit and receive channel isolation	RF_003	≥40dB
4		Channel-to-channel isolation (receive and receive)	RF_004	≥60dB
5		Transmit/receive switching time	RF_006	≤5μS
6		Transceiver switching requirement	RF_007	No switching shock
7		RF frequency	RF_008	1350~1550MHz
8		IF frequency	RF_009	350MHz
9		Signal bandwidth	RF_010	36MHz
10		Power supply	RF_011	+28V/3A, +5.2V/2A
11		Weight	RF_012	≤1000g
12		Power consumption (50% duty ratio)	RF_013	≤48W
13	RF Port	Characteristic impedance	RF_014	50Ω
14		Standing wave coefficient	RF_015	≤1.5
15	TX	Maximum average output power (antenna port)	RF_016	≥43dBm	When the input modulation signal power is -10dBm
16		Output power flatness	RF_017	≤2.0dB @1350~1550MHz	Within working frequency band
17		Output power flatness	RF_018	≤1.0dB@36MHz	Within the RF signal bandwidth
18		Output power consistency of different modules	RF_019	≤1dB
19		Peak-to-average ratio	RF_020	7.5dB
20		ACPR (OFDM)	RF_021	≥35dBc
21		EVM (64QAM)	RF_022	≤5%
22		Spurious level	RF_023	≤-80dBm@(≤1280MHz,≥1640MHz)
23		Out-of-band rejection	RF_024	≤-40dBc@(≤1280MHz,≥1640MHz)
24	RX RX	Channel Gain	RF_025	15dB±2dB
25		Output power range	RF_026	-90~0dBm
26		Noise Figure	RF_027	≤3dB
27		EVM	RF_028	≤3% (640AM)
28		Maximum non-damaging input power	RF_029	7dBm
29		Output limiting	RF_030	0dBm
30		Channel gain flatness	RF_031	≤2.0dB @1350~1550MHz	Within working frequency band
31		Gain flatness	RF_032	≤1.0dB@36MHz	Within the IF signal bandwidth
32		IF out-of-band rejection	RF_033	≥30dBc@(≥fc+40MHz,≤fc-40MHz)	IF signal bandwidth 36MHz
33			RF_034	≥50dBc@(≥fc+70MHz,≤fc-70MHz)
34		Bypass channel attenuation	RF_035	7±1dB

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