凯特 (Kǎitè) is the standard Chinese transliteration of the English name "Kate." It is commonly seen in news articles and media referring to public figures such as 凯特王妃 (Princess Kate). Like most foreign name transliterations, it uses characters chosen for their phonetic value.
凯特今天穿了一件红色的裙子。
Kǎitè jīntiān chuān le yí jiàn hóngsè de qúnzi.
Kate wore a red dress today.
新闻里又在报道凯特王妃了。
Xīnwén lǐ yòu zài bàodào Kǎitè wángfēi le.
The news is reporting on Princess Kate again.
凯特是我大学时认识的朋友。
Kǎitè shì wǒ dàxué shí rènshi de péngyou.
Kate is a friend I met during college.