A　compact　meandered　ring　patch　antenna　loaded　with　four　parasitic-grounded　patches　and　a　slotted　ground　is　proposed.　It　has　two　orthogonal　T-shaped　coupling　line　feeds　with　different　lengths　which　produce　circularly　polarized　radiation.　The　ground　is　developed　with　an　inner　square　patch　with　four　symmetric　slant　corner　cuts　and　an　outer　ring　that　further　reduces　the　overall　size　of　the　proposed　antenna.　The　measured　frequency　band　with　S　11　<-10　dB,　the　axial　ratio　(AR)　band　with　AR　<　3　dB　and　the　gain　are　of　1561-1612　MHz,　1566-1594　MHz,　and　3.13　dBi,　respectively.　The　patch　size　is　0.169　×　0.169　λ　g　2　and　the　overall　size　of　the　proposed　antenna　is　0.285　λ　g　×　0.285　λ　g　×　0.035　λ　g　(λ　g　denotes　the　guide　wavelength　at　the　center　frequency).　The　proposed　antenna　is　smaller　than　the　existing　antennas　and　can　be　an　ideal　compact　antenna　used　for　global　navigation　satellite　system　applications.　©　1963-2012　IEEE.