\u77e2\u91cf\u4fe1\u53f7\u53d1\u751f\u5668<\/a><\/h3>\nSG390 \u7cfb\u5217\u77e2\u91cf\u4fe1\u53f7\u53d1\u751f\u5668\u2014\u9ad8\u6027\u80fd\u3001\u4ef7\u683c\u5b9e\u60e0\u7684 RF \u6e90\u3002\u5305\u62ec SG392\uff082 GHz\uff09\u3001SG394\uff084 GHz\uff09\u548c SG396\uff086 GHz\uff09\u4e09\u6b3e\u6a21\u578b\uff0c\u652f\u6301\u6a21\u62df\u548c\u77e2\u91cf\u8c03\u5236\u3002\u8be5\u4eea\u5668\u91c7\u7528\u65b0\u7684 RF \u5408\u6210\u6280\u672f\uff0c\u63d0\u4f9b\u65e0\u8c10\u6ce2\u5e72\u6270\u7684\u8f93\u51fa\uff0c\u4f4e\u76f8\u4f4d\u566a\u58f0\uff081 GHz \u65f6\u4e3a -116 dBc\/Hz\uff09\u548c\u5353\u8d8a\u7684\u9891\u7387\u5206\u8fa8\u7387\uff08\u4efb\u610f\u9891\u7387\u4e0b\u4e3a 1 \u03bcHz\uff09\u3002\u6807\u914d\u6a21\u62df\u8c03\u5236\u548c\u77e2\u91cf\u57fa\u5e26\u53d1\u751f\u5668\u3002<\/p>\n
\u65b0\u9891\u7387\u5408\u6210\u6280\u672f<\/strong><\/p>\nSG390 \u7cfb\u5217\u4fe1\u53f7\u53d1\u751f\u5668\u57fa\u4e8e\u4e00\u79cd\u79f0\u4e3a\u201c\u6709\u7406\u8fd1\u4f3c\u9891\u7387\u5408\u6210\u201d\uff08RAFS\uff09\u7684\u65b0\u6280\u672f\u3002RAFS \u4f7f\u7528\u5c0f\u6574\u6570\u9664\u6570\u5728\u4f20\u7edf\u7684\u76f8\u4f4d\u9501\u5b9a\u73af\uff08PLL\uff09\u4e2d\u5408\u6210\u63a5\u8fd1\u671f\u671b\u9891\u7387\u7684\u4fe1\u53f7\uff0c\u901a\u8fc7\u8c03\u6574 PLL \u53c2\u8003\u9891\u7387\uff0c\u4f7f\u5176\u751f\u6210\u7cbe\u786e\u9891\u7387\uff0c\u4ece\u800c\u63d0\u4f9b\u4f4e\u76f8\u4f4d\u566a\u58f0\uff0c\u51e0\u4e4e\u65e0\u9650\u7684\u9891\u7387\u5206\u8fa8\u7387\uff0c\u65e0\u9700\u4f7f\u7528\u5206\u6570-N \u5408\u6210\u5668\u6216 YIG \u632f\u8361\u5668\u3002<\/p>\n
\u6a21\u62df\u8c03\u5236<\/strong><\/p>\nSG390 \u4fe1\u53f7\u53d1\u751f\u5668\u63d0\u4f9b\u591a\u79cd\u8c03\u5236\u80fd\u529b\uff0c\u5305\u62ec\u5e45\u5ea6\u8c03\u5236\uff08AM\uff09\u3001\u9891\u7387\u8c03\u5236\uff08FM\uff09\u3001\u76f8\u4f4d\u8c03\u5236\uff08\u03a6M\uff09\u548c\u8109\u51b2\u8c03\u5236\u3002\u5185\u90e8\u8c03\u5236\u6e90\u751f\u6210\u6b63\u5f26\u6ce2\u3001\u659c\u5761\u6ce2\u3001\u952f\u9f7f\u6ce2\u3001\u65b9\u6ce2\u548c\u566a\u58f0\u6ce2\u5f62\u3002\u5916\u90e8\u8c03\u5236\u4fe1\u53f7\u53ef\u63a5\u5165\u540e\u9762\u677f\u7684\u8c03\u5236\u8f93\u5165\u3002\u5185\u90e8\u8c03\u5236\u53d1\u751f\u5668\u4f5c\u4e3a\u8f93\u51fa\u4e5f\u53ef\u5728\u540e\u9762\u677f\u627e\u5230\u3002\u4e0e\u4f20\u7edf\u6a21\u62df\u4fe1\u53f7\u53d1\u751f\u5668\u4e0d\u540c\uff0cSG390 \u7cfb\u5217\u53ef\u5728 DC \u5230 62.5 MHz \u9891\u7387\u8303\u56f4\u5185\u8fde\u7eed\u626b\u9891\uff0c62.5 MHz \u4ee5\u4e0a\u7684\u626b\u9891\u8303\u56f4\u8d85\u8fc7\u4e00\u4e2a\u500d\u9891\u7a0b\u3002<\/p>\n
\u77e2\u91cf\u8c03\u5236<\/strong><\/p>\nSG390 \u7cfb\u5217\u652f\u6301 RF \u8f7d\u6ce2\u9891\u7387\u5728 400 MHz \u81f3 6.075 GHz \u4e4b\u95f4\u7684\u5b8c\u6574\u77e2\u91cf\u4fe1\u53f7\u8c03\u5236\u3002\u5177\u5907 125 MHz \u5de5\u4f5c\u9891\u7387\u7684\u53cc\u57fa\u5e26\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff0c\u652f\u6301\u5e38\u89c1\u77e2\u91cf\u8c03\u5236\u65b9\u6848\uff1aASK\u3001QPSK\u3001DQPSK\u3001\u03c0\/4 DQPSK\u30018PSK\u3001FSK\u3001CPM\u3001QAM\uff084 \u81f3 256\uff09\u30018VSB \u548c 16VSB\u3002\u5185\u7f6e\u6807\u51c6\u8109\u51b2\u6210\u5f62\u6ee4\u6ce2\u5668\uff0c\u5305\u62ec\u5347\u4f59\u5f26\u3001\u6839\u5347\u4f59\u5f26\u3001\u9ad8\u65af\u3001\u77e9\u5f62\u3001\u4e09\u89d2\u5f62\u7b49\uff0c\u8fd8\u652f\u6301\u76f4\u63a5\u6ce8\u5165\u52a0\u6027\u767d\u566a\u58f0\uff08AWGN\uff09\u3002<\/p>\n
\u5185\u90e8\u57fa\u5e26\u53d1\u751f\u5668<\/strong><\/p>\nSG390 \u7cfb\u5217\u91c7\u7528\u65b0\u578b I\/Q \u8c03\u5236\u67b6\u6784\uff0c\u63d0\u4f9b\u5feb\u901f\u3001\u7528\u6237\u53cb\u597d\u7684\u6ce2\u5f62\u751f\u6210\u3002\u57fa\u5e26\u53d1\u751f\u5668\u652f\u6301\u64ad\u653e\u7eaf\u6570\u5b57\u6570\u636e\uff0c\u81ea\u52a8\u5c06\u6570\u5b57\u7b26\u53f7\u6620\u5c04\u5230\u9009\u5b9a\u7684 I\/Q \u661f\u5ea7\uff0c\u7b26\u53f7\u901f\u7387\u9ad8\u8fbe 6 MHz\uff0c\u5e76\u901a\u8fc7\u9009\u5b9a\u7684\u8109\u51b2\u6210\u5f62\u6ee4\u6ce2\u5668\u751f\u6210\u6700\u7ec8\u6ce2\u5f62\u3002\u6b64\u57fa\u5e26\u4fe1\u53f7\u901a\u8fc7\u6807\u51c6 I\/Q \u8c03\u5236\u6280\u672f\u8c03\u5236\u5230 RF \u8f7d\u6ce2\u4e0a\u3002\u9884\u8bbe\u7684\u901a\u4fe1\u534f\u8bae\uff08\u5982 GSM\u3001GSM EDGE\u3001W-CDMA\u3001APCO-25\u3001DECT \u7b49\uff09\u53ef\u5feb\u901f\u914d\u7f6e\u4fe1\u53f7\u53d1\u751f\u5668\u7684\u8c03\u5236\u7c7b\u578b\u3001\u7b26\u53f7\u6570\u636e\u901f\u7387\u7b49\uff0c\u65e0\u9700\u5916\u90e8\u8ba1\u7b97\u673a\u6216\u7b2c\u4e09\u65b9\u8f6f\u4ef6\u3002<\/p>\n
\u5916\u90e8 I\/Q \u8c03\u5236<\/strong><\/p>\n\u540e\u9762\u677f BNC I\/Q \u8c03\u5236\u8f93\u5165\u548c\u8f93\u51fa\u652f\u6301\u901a\u8fc7\u5916\u90e8\u6e90\u8fdb\u884c\u4efb\u610f\u77e2\u91cf\u8c03\u5236\uff0c\u5916\u90e8\u4fe1\u53f7\u8def\u5f84\u652f\u6301\u8d85\u8fc7 300 MHz \u5e26\u5bbd\uff0c\u6ee1\u91cf\u7a0b\u8303\u56f4\u4e3a \u00b10.5 V\uff0c\u8f93\u5165\u963b\u6297\u4e3a 50 \u03a9\u3002<\/p>\n
\u529f\u7387\u4e0e\u9891\u7387<\/strong><\/p>\n\u6240\u6709 SRS<\/a> RF \u4fe1\u53f7\u53d1\u751f\u5668\u5747\u5177\u6709\u7ea7\u8054\u653e\u5927\u5668\u548c\u6570\u5b57\u8870\u51cf\u5668\uff0c\u63d0\u4f9b\u6700\u591a +25 dB \u7684\u589e\u76ca\u548c -130 dB \u7684\u8870\u51cf\u3002\u901a\u8fc7\u5de5\u5382\u6821\u51c6\uff0c\u8f93\u51fa\u529f\u7387\u5728\u6bcf\u4e2a\u8870\u51cf\u5668\u6b65\u8fdb\u7684 32 \u4e2a\u9891\u7387\u70b9\u4e0a\u6d4b\u91cf\uff0c\u5e76\u4f7f\u7528\u5185\u5b58\u77e9\u9635\u8fdb\u884c\u63d2\u503c\uff0c\u786e\u4fdd\u6700\u4f73\u8870\u51cf\u5668\u8bbe\u7f6e\u3002\u6a21\u62df\u8870\u51cf\u5668\u7528\u4e8e\u5728\u77e9\u9635\u5143\u7d20\u4e4b\u95f4\u63d0\u4f9b 0.01 dB \u5206\u8fa8\u7387\uff0c\u5e76\u8865\u507f\u6b8b\u4f59\u7684\u70ed\u6548\u5e94\u3002<\/p>\nOCXO \u6216\u94f7\u57fa\u51c6<\/strong><\/p>\nSG390 \u7cfb\u5217\u914d\u5907\u70e4\u7bb1\u63a7\u5236\u6676\u4f53\u632f\u8361\u5668\uff08OCXO\uff09\u57fa\u51c6\uff0c\u63d0\u4f9b\u975e\u5e38\u4f4e\u7684\u76f8\u4f4d\u566a\u58f0\u548c\u8001\u5316\u3002\u53ef\u9009\u7684\u94f7\u632f\u8361\u5668<\/a>\uff08Opt. 04\uff09\u53ef\u663e\u8457\u964d\u4f4e\u9891\u7387\u8001\u5316\u5e76\u6539\u5584\u6e29\u5ea6\u7a33\u5b9a\u6027\u3002\u540e\u9762\u677f\u63d0\u4f9b\u5916\u90e8 10 MHz \u57fa\u51c6\u8f93\u5165\u3002<\/p>\n\u7b80\u4fbf\u901a\u8baf<\/strong><\/p>\n\u652f\u6301 GPIB\u3001RS-232 \u548c Ethernet \u63a5\u53e3\u7684\u8fdc\u7a0b\u64cd\u4f5c\uff0c\u6240\u6709\u4eea\u5668\u529f\u80fd\u5747\u53ef\u901a\u8fc7\u8fd9\u4e9b\u63a5\u53e3\u63a7\u5236\u548c\u8bfb\u53d6\u3002\u6700\u591a\u53ef\u5728\u975e\u6613\u5931\u6027\u5185\u5b58\u4e2d\u4fdd\u5b58\u4e5d\u79cd\u4eea\u5668\u914d\u7f6e\u3002<\/p>\n
\n\n\n\n\n\n\n\n\n\n\n
SG390 \u7cfb\u5217\u4fe1\u53f7\u53d1\u751f\u5668\u57fa\u4e8e\u4e00\u79cd\u79f0\u4e3a\u201c\u6709\u7406\u8fd1\u4f3c\u9891\u7387\u5408\u6210\u201d\uff08RAFS\uff09\u7684\u65b0\u6280\u672f\u3002RAFS \u4f7f\u7528\u5c0f\u6574\u6570\u9664\u6570\u5728\u4f20\u7edf\u7684\u76f8\u4f4d\u9501\u5b9a\u73af\uff08PLL\uff09\u4e2d\u5408\u6210\u63a5\u8fd1\u671f\u671b\u9891\u7387\u7684\u4fe1\u53f7\uff0c\u901a\u8fc7\u8c03\u6574 PLL \u53c2\u8003\u9891\u7387\uff0c\u4f7f\u5176\u751f\u6210\u7cbe\u786e\u9891\u7387\uff0c\u4ece\u800c\u63d0\u4f9b\u4f4e\u76f8\u4f4d\u566a\u58f0\uff0c\u51e0\u4e4e\u65e0\u9650\u7684\u9891\u7387\u5206\u8fa8\u7387\uff0c\u65e0\u9700\u4f7f\u7528\u5206\u6570-N \u5408\u6210\u5668\u6216 YIG \u632f\u8361\u5668\u3002<\/p>\n
\u6a21\u62df\u8c03\u5236<\/strong><\/p>\n SG390 \u4fe1\u53f7\u53d1\u751f\u5668\u63d0\u4f9b\u591a\u79cd\u8c03\u5236\u80fd\u529b\uff0c\u5305\u62ec\u5e45\u5ea6\u8c03\u5236\uff08AM\uff09\u3001\u9891\u7387\u8c03\u5236\uff08FM\uff09\u3001\u76f8\u4f4d\u8c03\u5236\uff08\u03a6M\uff09\u548c\u8109\u51b2\u8c03\u5236\u3002\u5185\u90e8\u8c03\u5236\u6e90\u751f\u6210\u6b63\u5f26\u6ce2\u3001\u659c\u5761\u6ce2\u3001\u952f\u9f7f\u6ce2\u3001\u65b9\u6ce2\u548c\u566a\u58f0\u6ce2\u5f62\u3002\u5916\u90e8\u8c03\u5236\u4fe1\u53f7\u53ef\u63a5\u5165\u540e\u9762\u677f\u7684\u8c03\u5236\u8f93\u5165\u3002\u5185\u90e8\u8c03\u5236\u53d1\u751f\u5668\u4f5c\u4e3a\u8f93\u51fa\u4e5f\u53ef\u5728\u540e\u9762\u677f\u627e\u5230\u3002\u4e0e\u4f20\u7edf\u6a21\u62df\u4fe1\u53f7\u53d1\u751f\u5668\u4e0d\u540c\uff0cSG390 \u7cfb\u5217\u53ef\u5728 DC \u5230 62.5 MHz \u9891\u7387\u8303\u56f4\u5185\u8fde\u7eed\u626b\u9891\uff0c62.5 MHz \u4ee5\u4e0a\u7684\u626b\u9891\u8303\u56f4\u8d85\u8fc7\u4e00\u4e2a\u500d\u9891\u7a0b\u3002<\/p>\n \u77e2\u91cf\u8c03\u5236<\/strong><\/p>\n SG390 \u7cfb\u5217\u652f\u6301 RF \u8f7d\u6ce2\u9891\u7387\u5728 400 MHz \u81f3 6.075 GHz \u4e4b\u95f4\u7684\u5b8c\u6574\u77e2\u91cf\u4fe1\u53f7\u8c03\u5236\u3002\u5177\u5907 125 MHz \u5de5\u4f5c\u9891\u7387\u7684\u53cc\u57fa\u5e26\u4efb\u610f\u6ce2\u5f62\u53d1\u751f\u5668\uff0c\u652f\u6301\u5e38\u89c1\u77e2\u91cf\u8c03\u5236\u65b9\u6848\uff1aASK\u3001QPSK\u3001DQPSK\u3001\u03c0\/4 DQPSK\u30018PSK\u3001FSK\u3001CPM\u3001QAM\uff084 \u81f3 256\uff09\u30018VSB \u548c 16VSB\u3002\u5185\u7f6e\u6807\u51c6\u8109\u51b2\u6210\u5f62\u6ee4\u6ce2\u5668\uff0c\u5305\u62ec\u5347\u4f59\u5f26\u3001\u6839\u5347\u4f59\u5f26\u3001\u9ad8\u65af\u3001\u77e9\u5f62\u3001\u4e09\u89d2\u5f62\u7b49\uff0c\u8fd8\u652f\u6301\u76f4\u63a5\u6ce8\u5165\u52a0\u6027\u767d\u566a\u58f0\uff08AWGN\uff09\u3002<\/p>\n \u5185\u90e8\u57fa\u5e26\u53d1\u751f\u5668<\/strong><\/p>\n SG390 \u7cfb\u5217\u91c7\u7528\u65b0\u578b I\/Q \u8c03\u5236\u67b6\u6784\uff0c\u63d0\u4f9b\u5feb\u901f\u3001\u7528\u6237\u53cb\u597d\u7684\u6ce2\u5f62\u751f\u6210\u3002\u57fa\u5e26\u53d1\u751f\u5668\u652f\u6301\u64ad\u653e\u7eaf\u6570\u5b57\u6570\u636e\uff0c\u81ea\u52a8\u5c06\u6570\u5b57\u7b26\u53f7\u6620\u5c04\u5230\u9009\u5b9a\u7684 I\/Q \u661f\u5ea7\uff0c\u7b26\u53f7\u901f\u7387\u9ad8\u8fbe 6 MHz\uff0c\u5e76\u901a\u8fc7\u9009\u5b9a\u7684\u8109\u51b2\u6210\u5f62\u6ee4\u6ce2\u5668\u751f\u6210\u6700\u7ec8\u6ce2\u5f62\u3002\u6b64\u57fa\u5e26\u4fe1\u53f7\u901a\u8fc7\u6807\u51c6 I\/Q \u8c03\u5236\u6280\u672f\u8c03\u5236\u5230 RF \u8f7d\u6ce2\u4e0a\u3002\u9884\u8bbe\u7684\u901a\u4fe1\u534f\u8bae\uff08\u5982 GSM\u3001GSM EDGE\u3001W-CDMA\u3001APCO-25\u3001DECT \u7b49\uff09\u53ef\u5feb\u901f\u914d\u7f6e\u4fe1\u53f7\u53d1\u751f\u5668\u7684\u8c03\u5236\u7c7b\u578b\u3001\u7b26\u53f7\u6570\u636e\u901f\u7387\u7b49\uff0c\u65e0\u9700\u5916\u90e8\u8ba1\u7b97\u673a\u6216\u7b2c\u4e09\u65b9\u8f6f\u4ef6\u3002<\/p>\n \u5916\u90e8 I\/Q \u8c03\u5236<\/strong><\/p>\n \u540e\u9762\u677f BNC I\/Q \u8c03\u5236\u8f93\u5165\u548c\u8f93\u51fa\u652f\u6301\u901a\u8fc7\u5916\u90e8\u6e90\u8fdb\u884c\u4efb\u610f\u77e2\u91cf\u8c03\u5236\uff0c\u5916\u90e8\u4fe1\u53f7\u8def\u5f84\u652f\u6301\u8d85\u8fc7 300 MHz \u5e26\u5bbd\uff0c\u6ee1\u91cf\u7a0b\u8303\u56f4\u4e3a \u00b10.5 V\uff0c\u8f93\u5165\u963b\u6297\u4e3a 50 \u03a9\u3002<\/p>\n \u529f\u7387\u4e0e\u9891\u7387<\/strong><\/p>\n \u6240\u6709 SRS<\/a> RF \u4fe1\u53f7\u53d1\u751f\u5668\u5747\u5177\u6709\u7ea7\u8054\u653e\u5927\u5668\u548c\u6570\u5b57\u8870\u51cf\u5668\uff0c\u63d0\u4f9b\u6700\u591a +25 dB \u7684\u589e\u76ca\u548c -130 dB \u7684\u8870\u51cf\u3002\u901a\u8fc7\u5de5\u5382\u6821\u51c6\uff0c\u8f93\u51fa\u529f\u7387\u5728\u6bcf\u4e2a\u8870\u51cf\u5668\u6b65\u8fdb\u7684 32 \u4e2a\u9891\u7387\u70b9\u4e0a\u6d4b\u91cf\uff0c\u5e76\u4f7f\u7528\u5185\u5b58\u77e9\u9635\u8fdb\u884c\u63d2\u503c\uff0c\u786e\u4fdd\u6700\u4f73\u8870\u51cf\u5668\u8bbe\u7f6e\u3002\u6a21\u62df\u8870\u51cf\u5668\u7528\u4e8e\u5728\u77e9\u9635\u5143\u7d20\u4e4b\u95f4\u63d0\u4f9b 0.01 dB \u5206\u8fa8\u7387\uff0c\u5e76\u8865\u507f\u6b8b\u4f59\u7684\u70ed\u6548\u5e94\u3002<\/p>\n OCXO \u6216\u94f7\u57fa\u51c6<\/strong><\/p>\n SG390 \u7cfb\u5217\u914d\u5907\u70e4\u7bb1\u63a7\u5236\u6676\u4f53\u632f\u8361\u5668\uff08OCXO\uff09\u57fa\u51c6\uff0c\u63d0\u4f9b\u975e\u5e38\u4f4e\u7684\u76f8\u4f4d\u566a\u58f0\u548c\u8001\u5316\u3002\u53ef\u9009\u7684\u94f7\u632f\u8361\u5668<\/a>\uff08Opt. 04\uff09\u53ef\u663e\u8457\u964d\u4f4e\u9891\u7387\u8001\u5316\u5e76\u6539\u5584\u6e29\u5ea6\u7a33\u5b9a\u6027\u3002\u540e\u9762\u677f\u63d0\u4f9b\u5916\u90e8 10 MHz \u57fa\u51c6\u8f93\u5165\u3002<\/p>\n \u7b80\u4fbf\u901a\u8baf<\/strong><\/p>\n \u652f\u6301 GPIB\u3001RS-232 \u548c Ethernet \u63a5\u53e3\u7684\u8fdc\u7a0b\u64cd\u4f5c\uff0c\u6240\u6709\u4eea\u5668\u529f\u80fd\u5747\u53ef\u901a\u8fc7\u8fd9\u4e9b\u63a5\u53e3\u63a7\u5236\u548c\u8bfb\u53d6\u3002\u6700\u591a\u53ef\u5728\u975e\u6613\u5931\u6027\u5185\u5b58\u4e2d\u4fdd\u5b58\u4e5d\u79cd\u4eea\u5668\u914d\u7f6e\u3002<\/p>\n