Diplexers And Multiplexers

Source: Corry Micronics, Inc.

Diplexers are three port devices that are used to combine or split signals that are at different frequencies. A diplexer is designed with two fixed bandpass filters that are connected to a common port. Multiplexers are passive devices used to split or combine signals, usually of different frequencies. Once several frequencies are combined, a single transmission medium is used to send or receive the signals

Details

Diplexers are three port devices that are used to combine or split signals that are at different frequencies. A diplexer is designed with two fixed bandpass filters that are connected to a common port. The two frequency bands are typically the transmission output and receive signals that are separated so that the two signals do not interfere with each other.

Multiplexers are passive devices used to split or combine signals, usually of different frequencies. Once several frequencies are combined, a single transmission medium is used to send or receive the signals. When the application is for splitting a signal, the input is the signal source and the outputs are split into several other ports. The two most common configurations are the 2 and 4 way. At Corry Micronics, we have off the shelf units designed for industry specific frequency bands or we will custom design to a company's requirement.

Multiplexers are many times installed at intermediate points where signals need to be added or removed from the transmission line.

PDF of all Diplexers and Multiplexers.

Part Number	Frequency (MHz)	Designed for Systems	Insertion Loss		Passband Ripple (dB Max, p-p)	Return Loss (dB)	Stopband Attenuation (dB)
Part Number	Frequency (MHz)	Designed for Systems	(dB) Max	(dB) Typ	Passband Ripple (dB Max, p-p)	Return Loss (dB)	Stopband Attenuation (dB)
CMIF228-CDMA&GSM-02	825 – 880 909 - 960	CDMA GSM	0.8	0.5	0.5	14	70 Relative 65 Relative
CMIF228-CDMA&GSM-05	825 – 835 870 – 880 909 – 915 954 - 960	CDMA GSM	1.8	1.6	0.5	18	80 (CDMA Up to Down) 90 (GSM Up to Down)
CMIF228-CDMA&GSM-07	825 – 880 909 - 960	CDMA GSM	0.8	0.5	0.5	18	88 Relative 88 Relative
CMIF228-GSM-01	909 – 915 954 - 960	GSM	1.0	0.6	0.5	18	90 @ Channel
CMIF228-GSM-04	890 – 915 835 - 960	GSM	1.8	1.5	0.5	18	70 @ Channel
CMIF228 – CDMA-07	825 – 835 870 - 880	CDMA	1.5	1.2	0.5	18	8 (+/- 7.5 MHz) 90 @ Channel
CMIF228-CDMA-06	1920 - 1980	CDMA	1.0	0.8	0.5	18	45 (1900 – 2000 MHz) 90 (2110 – 2170 MHz)
CMIF228-WLAN&PHS-01	1885 – 1920 2400 - 2483	WLAN PHS	1.0	0.6	0.6	18	75 @ Channel
CMIF228-WCDMA-01	1920 – 1980 2110 - 2170	WCDMA	1.0	0.8	0.5	18	45 (1900 /2000 MHz) 45 (2190/2090 MHz) 90 @ Channel

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