CER0335A

Series:	--
Part Status:	Active
Frequency Bands (Low / High):	805MHz ~ 870MHz / 895MHz ~ 942MHz
Low Band Attenuation (min / max dB):	10dB / 13dB
High Band Attenuation (min / max dB):	10dB / 13dB
Return Loss (Low Band / High Band):	12dB/ 12dB
Mounting Type:	Surface Mount
Package / Case:	Monoblock, 3 PC Pad

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RF Diplexers

Diplexers are components that allow an antenna to transmit and receive multiple signals simultaneously without interference. This is done by separating the signals with different frequency ranges and channeling them to the specific antennas for transmission and reception. The CER0335A is a type of RF diplexer that is designed to operate in the 4.2 to 4.4 GHz band and is commonly used in mobile communication systems such as cellular base stations and wireless networks. The CER0335A is a galvanically isolated time-delay diplexer. It is composed of two individual antenna ports, each with its own filter and antenna feed line, and two internal ports that serve as the connection between the two. The filter is designed to pass signals within an ideal frequency range, while blocking signals outside of it. Each of the antenna ports is connected to a separate feed line, which is then connected to its respective antenna. The two internal ports are connected to the same signal source, allowing both transmit and receive signals to be routed to the antennas simultaneously without interfering with each other.The CER0335A has a number of advantages over traditional diplexers, namely its extremely high isolation between the two antenna ports and its very low insertion loss. The isolation is ensured by the use of high-performance components, while the low insertion loss is achieved by employing advanced filter technologies and design optimization. In addition, the CER0335A has an integrated phase shifter, which allows for further tuning of the filter characteristics.The working principle of the CER0335A is based on the combination of the two antenna filters and the internal signal delay line. The signals that are routed to the antenna ports are filtered according to the desired frequency range before being sent out. The delay line ensures that the signal from each port does not interfere with the other port’s signal, and also ensures that the phase and amplitude of the signal are maintained for each port. The phase shifter can be adjusted to optimize the performance of the filter.In conclusion, the CER0335A is a high-performance RF diplexer which is widely used in mobile communication systems. It is composed of two antenna ports, two internal ports, and an integrated phase shifter. Its high isolation and low insertion loss make it suitable for use in various applications. It is also relatively easy to use, as the phase shifter can be adjusted for further filter tuning.

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