Triple DES and AES are the very same type of scheme:
- symmetric block cypher, which also implies fixed size; block sizes are 64 bit for DES, 128 for AES.
RSA is asymmetric, and the key length determines the size of plain- and ciphertext. Therefore, with a fixed key length you also have an (almost; length may vary by 1 dependant on choice of primes) fixed size.
Your main error is, that you attribute the mode of operation to AES, which is false. In general, mode of operation describe how to use a block cipher of fixed length to encrypt large amounts of data or a stream of data (e.g. secure channels, etc.). Although they are defined on symmetric ciphers, you could also use them for asymmetric encryption(RSA, etc.), but it is not practical to do (see hybrid encryption)
Edit: Thanks @ poncho for pointing out, that AES has a fixed block size of 128 bit (and keys with 128, 192 or 256 bit), and the original Rijndael cipher supported all three sizes for keys and blocks.