LMDS
灏勯鍗曞厓閿佺浉鐜紡鏈尟婧愯璁¤缁嗚瑙?/p>
涓績璁洪锛氬垎棰戝紡閿佺浉鐜�嶉鍘熺悊
绯荤粺缁勬垚涓庤璁?/p>
绯荤粺瀹為獙缁撴灉
瑙ｅ喅鏂规锛氶攣鐩哥數璺殑浠跨湡鍜岃璁?/p>
楂橀鐢佃矾璁捐
LMDS
鏄竴绉嶈緝鏂扮殑瀹藉甫鏃犵嚎鎺ュ叆鎶�鏈紝瀹冧互鍒濇湡鎶曡祫灏戙�佷紶杈撻�熺巼楂樸�佷笟鍔＄被鍨嬩赴瀵岋紝
浠ュ強闈炲父閫傚悎鍦ㄥ煄甯備腑楂樺瘑搴︾敤鎴峰湴鍖?/p>
锛堝鍟嗕笟澶фゼ锛?/p>
鎻愪緵瀹藉甫閫氫俊鏈嶅姟绛夌壒鐐硅�屽鍙椾笟
鐣岀灘鐩�?/p>
LMDS
宸ヤ綔棰戞涓?/p>
24GHz
锝?/p>
29GHz
锛?/p>
鍙墿灞曞埌
10GHz
锝?/p>
66GHz
銆傝繖鎰忓懗鐫�闇�瑕?/p>
姣背娉㈡敹鍙戠郴缁熴�?/p>
LMDS
灏勯绯荤粺姣背娉㈡敹鍙戝崟鍏冪殑鎺ユ敹
/
鍙戝皠娆¤皭娉㈡贩棰戝櫒闇�瑕佹湰鍦板井
娉㈤鐜囨尟鑽℃簮鎻愪緵绋冲畾鐨勬湰鍦板弬鑰冩尟鑽′俊鍙枫�?/p>
寰尝棰戠巼婧愭槸鎵�鏈夊井娉㈢郴缁燂紙濡傞浄杈俱�侀�氳銆佸鑸瓑锛夌殑鍩烘湰寰尝鑳芥簮銆備富瑕佸寘鎷浐瀹氶
鐜囨尟鑽″櫒锛堢偣棰戞尟鑽℃簮锛夊拰寰尝棰戠巼鍚堟垚鍣ㄤ袱绫汇�傚浐瀹氶鐜囨尟鑽″櫒閫氬父閲囩敤閿佺浉鐜妧鏈潵
鑾峰緱楂樼ǔ瀹氬害銆佷綆鐩镐綅鍣０鐨勮緭鍑轰俊鍙凤紝
鍦ㄩ�氳绯荤粺鍜岄浄杈剧郴缁熶腑浣滀负鏈満鎸崱鍣ㄥ緱鍒版渶
骞挎硾鐨勫簲鐢紝鍏朵腑鍖呮嫭
VCO
閿佺浉鐐归婧愩�?/p>
DRO
閿佺浉鐐归婧愮瓑銆傜煶鑻辨櫠浣撻渿鑽″櫒鏄竴绉嶉珮
绋冲畾鐨勯鐜囨簮锛屼絾鏄畠浠彧鑳藉伐浣滃湪鍑犵櫨鍏嗚但鑼冨洿鍐咃紝涓嶈兘杈惧埌璁捐瑕佹眰銆傚湪寰尝棰戠巼锛?/p>
璁捐绋冲畾鐨勯鐜囨簮閫氬父鐢ㄧ煶鑻辨櫠浣撴尟鑽″櫒杈撳嚭淇″彿缁忛攣鐩哥幆鎶�鏈?/p>
N
娆″�嶉鏉ュ疄鐜般�?/p>
鏈枃浠嬬粛鐨勯鐜囨尟鑽″櫒涓?/p>
LMDS
灏勯绯荤粺涓殑鏈湴鎸崱婧愯璁★紝瑕佹眰杈撳嚭淇″彿鍥哄畾棰戠巼
鐐逛负
11.776GHz
锛屼俊鍙峰姛鐜囦负
1mW
锛岀浉浣嶅櫔澹版寚鏍囷紙鍌呮皬棰戠巼涓?/p>
1kHz
鏃讹級涓?/p>
-75dBc/Hz
銆?/p>
LMDS
瀵规湰鎸簮鐨勭簿搴﹁姹傝緝楂橈紝鍚屾椂鐢变簬
LMDS
绯荤粺閲囧彇鍥涚浉鐩哥Щ閿帶锛?/p>
QPSK
锛夎皟鍒?/p>
鏂瑰紡锛屾湰鎸簮鐨勭ǔ瀹氬害闇�瑕佽揪鍒颁竴瀹氶噺绾ф潵婊¤冻浣庤鐮佺巼鐨勮姹傘�?/p>
鍒╃敤鍒嗛寮忛攣鐩稿�嶉鎶�
鏈彲浠ュ疄鐜颁綆鎴愭湰銆侀珮鎬ц兘鐨勫井娉俊鍙峰彂鐢熷櫒鐨勮璁¤姹傘�?/p>
鍒嗛寮忛攣鐩哥幆鍊嶉鍘熺悊鍏稿瀷鐨勫垎棰戝紡閿佺浉鐜矾鍖呮嫭妫�鐩稿櫒锛?/p>
PHD
锛?/p>
銆佺數鍘嬫帶鍒舵尟鑽″櫒
锛?/p>
VCO
锛?/p>
銆佺幆璺护娉㈠櫒锛?/p>
LPF
锛夊拰鍙紪绋嬫暟瀛楀垎棰戝櫒锛?/p>
1/N
锛?/p>
銆傚浘
1
鏄渶绠�鏄撶殑閿佺浉寮忛鐜?/p>
鍚堟垚鍣ㄧ殑鐩镐綅妯″瀷鍥俱�?/p>
涓�涓珮绮惧害绋冲畾鍙傝�冧俊鍙?/p>
fi
杈撳叆鑷虫鐩稿櫒锛?/p>
涓?/p>
1/N
鍒嗛鍚庣殑鐢靛帇鎺?