安立知發表新一代向量訊號產生器MG3710A.

新一代的無線通訊系統所需的射頻(RF)測試訊號多被要求能夠同時驗證像是被使用於手機移動通訊系統、無線區域網路、數位廣播系統、車用電子裝置、窄頻公共通訊及工業無線電等無線通訊系統之TRx特性。現今行動終端裝置已朝向越來越多元的系統發展，以同步支援多重功能(如:ISDB-T、無線區域網路等)及電信服務(如LTE及WCDMA)。此外，新的LTE Advanced*³規範(自MIMO*⁴的技術至下一代LTE的規範)更需要新的carrier aggregation 功能承載不同頻段上正交多載波*⁵，以期能提供更高的傳輸速率。

Anritsu 新推出的MG3710A可於單一機台上安裝兩個RF*¹訊號源輸出，每一個訊號源均可輸出兩組調變訊號*²，亦即可同時提供四組RF訊號輸出。換言之，只需要一台新推出的MG3710A即可支援以往需要多台昂貴訊號產生器才能完成的測試。憑藉著可單機輸出四組不同RF訊號的強大效能, MG3710A將可為使用者大幅節省投入多重系統無線終端裝置、基地台、放大器、數位公眾及工業無線電系統的研發及生產成本。 

[產品簡述] 

MG3710A RF輸出訊號可操作的頻段有三種，100 kHz ~ 2.7 GHz /100 kHz ~ 4 GHz /100 kHz ~ 6 GHz，分別可應用於LTE、WCDMA、GSM、CDMA2000、無線區域網路、數位寬頻系統、窄頻公眾及工業無線電之用途。MG3710A可支援將兩個RF訊號源輸出安裝於單一機台，每一個訊號源均可輸出兩組調變訊號，亦即，MG3710A可同時提供四組RF訊號輸出。

[產品特點] 

■ 囊括所有的RF的測試規範

MG3710A的內建波形模式涵蓋所有的規範- LTE、3G W-CDMA/HSPA、 CDMA2000、2G GSM、PDC、無線區域網路、藍芽及數位廣播系統ISDB-T等。藉由不同波形模式的選擇即可輕鬆取得所需的輸出測試訊號。此外，若搭配使用個別授權之IQproducer軟體，更可依需求製作出不同的波形模式以輸出新的RF測試訊號。 

■ 支援MIMO以及Carrier Aggregation*⁶ 功能

在新的LTE Advanced的規範中指出，Carrier aggregation 功能的未來發展為HSPA及LTE終端裝置結合MIMO技術以提昇傳輸速率的關鍵技術。

MIMO及carrier aggregation 功能之發展將需要使用多組訊號源，而MG3710A單機即可完成此項工作，較之傳統的訊號產生器，將可大幅降低使用者的設備成本。 

■ 全面升級的優異效能

新一代MG3710A不僅在基礎效能如ACLR*⁷及SSB的相位雜訊*⁸處理上有著極優異的表現，更有著高品質的RF訊號輸出能力。MG3710A 的應用範圍廣泛，涵蓋寬頻的手機通訊系統到窄頻的通訊系統(像是車用電子、數位公眾及工業無線電系統等)，絕對是理想無線通訊測試方案的首選。 

■ 靈活的測試架構

MG3710A的訊號輸出功率及頻率架構可依照客戶的不同需求作選擇，以符合各種不同的應用需要。此外，若選配安裝BER*⁹測試及AWGN*¹⁰產生器，MG3710A更能夠為你量身訂做出不同的架構。

[Target Markets and Applications]

■ Target Markets: Makers of mobile phones, base stations, communications devices and electronic parts

■ Applications: R&D, manufacturing and service of multisystem smartphones/mobile phones, base station infrastructure, wireless LAN and Bluetooth^® equipment, digital broadcast equipment, automotive electronics, public and private narrowband radio, etc. 

[Terminology]

*1 RF: Radio Frequency

Frequencies in the electromagnetic spectrum used by wireless signals.

 *2 Modulation

Wireless communication systems transfer information by converting it to electrical signals. The process of imposing the converted electrical signal on the carrier wave is called modulation.

*3 LTE Advanced

Fourth generation (4G) mobile communications standard approved by ITU. LTE Advanced aims to increase transmission speeds for the LTE standard now spreading worldwide to 1 Gbps when stationary and 100 Mbps when moving. Currently, 3GPP is deciding the international standard.

*4 MIMO: Multiple-Input Multiple-Output

Abbreviation for technology to widen data send and receive bands by combining multiple antennas. 

*5 Carrier Wave

Signal on which modulated data imposed.

*6 Carrier Aggregation

In mobile systems, increasing the bandwidth increases the amount of data transfer at high speed. Carrier aggregation is a technology for increasing the bandwidth by aggregating multiple carrier waves. Carriers with 10- and 20-MHz bands can use this technology to use the 30-MHz band to increase average and peak speeds. 

*7 ACLR: Adjacent Channel Leakage Power Ratio

Ratio of leakage power between carrier wave and adjacent channels used as an index of degree of interference suffered by adjacent communications channels.

*8: SSB Phase Noise

Surplus frequency components always present in Single Side Band (SSB) at signal generation.

*9 BER: Bit Error Rate

Ratio of error data in transferred data when random sent digital data demodulated.

*10 AWGN: Additive White Gaussian Noise

Noise with characteristics approaching natural white noise.