Following equipment and components are available: 1 No. – Circulator 1 No. - Cavity type Frequency meter 1 No. - Directional coupler 1 No. – Power meter 2 Nos. – Match loads In a satellite communication station, the same antenna is used for signal transmission and -reception. (a) Using necessary devices given above explain how the transmitter (used for Uplink) and the receiver (used in the Downlink) should be connected to the antenna. Draw a block diagram showing the connection of various equipment / components.
. Following equipment and components are available:
1 No. – Circulator
1 No. - Cavity type Frequency meter
1 No. - Directional coupler
1 No. – Power meter
2 Nos. – Match loads
In a satellite communication station, the same antenna is used for signal transmission and -reception.
(a) Using necessary devices given above explain how the transmitter (used for Uplink) and the receiver (used in the Downlink) should be connected to the antenna. Draw a block diagram showing the connection of various equipment / components.
(b) It is necessary to measure the transmitting frequency using the components / equipment given above.
(i) Draw a block diagram to show the connection of measuring equipment and various components.
(ii) Explain how you would measure the transmitting frequency. Method (all the steps ) of taking readings must be accurately explained.
(c) Number the ports (port 1, port 2 … etc.) of the directional coupler and the circulator on the block diagrams given in (a) and / (b). Write the s-matrix for the circulator.
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