telemetry ground station

I m a beginner in designing a telemetry groundstation. In my project, i need to design a system which can telemetry a stream of data from an onboard transceiver to the groundstation which is situated roughly 200m apart. D transceivers pair i use are CC1100-RTY1 from texas instrument. My question are: which type of antenna i should used at d groundstation? (whether HGA or others like 1/4 wave flexible antenna...etc). Besides, can i directly connect the transceiver on the ground to PC or i need a microcontroller to interface d transceiver to the PC?

You need a microcotroller, because CC1100 has SPI interface. You may use a SoC that includes a C51 MCU.

The transmitter is placed on a flying object?
The maximum output power from CC1100 is 10dBm. I don't think this is enough to ensure reliable operation, event for a flying object, taking into account the antenna on the object may be random oriented during flight. For a ground object the power is very low.
CC1100 is intended for a few meters, like a wireless mouse. Depends a lot on data rate, too. Check datasheet.

The ground station antenna should be λ/4 omnidirectional, if you don't know exactly the position of the object in flight.

Look into what is known as a "link budget". Sklar's book on Digital Communications has a good example.

This will give you a starting point on seeing what you need and where you can make compromises and still have your link work.

1 transceiver is placing inside d flying object and another one is at d groundstation receiving data. which means that i need 2 microcontrollers, 2 transceiver, 2 antennas, and a usb to serial port connection wire which create interface between d MCU n d PC?
i plan to set d data rate to 38.4kbps and i wonder if the cc1100 transceiver can support +-200m data transmission?or i need to insert extra PA in the circuit?

hey i am working on my fyp project in which i have to transmit data frm one mcu to other in a less than 20 meter range . i hav selected the cc1100 transciever but dont hav any idea of which antenna should i use...the frequency i hav designed my project for is 433 Mhz. so kindly let me suggest an antenna for this transciever at 433 Mhz....i shall be very thankful to you people..