IDT公司的F2923在开关切换时能够在所有端口提供恒定阻抗,同时不影响隔离度、线性度或插入损耗

美国加利福尼亚州圣何塞,20151124 - IDT公司(IDT®)(NASDAQ:IDTI)今天宣布推出业界首款采用正在申请专利的KZ恒阻抗技术的单极双掷(SPDT)RF开关产品, IDT F2923是一款低插入损耗单极双掷吸收式(absorptive)RF开关,设计用于包括基站(2G,3G,4G,5G)、无线回程、CATV和便携式手持设备等多种RF应用。

F2923采用的KZ技术可以在射频端口间切换时控制所有端口的阻抗,保持了回波损耗。对于没有采用KZ技术的常规开关,由于在开关时不能很好地控制开关阻抗,因而在切换RF路径时会产生较大的电压驻波比(VSWR)瞬态,该VSWR瞬态会降低系统性能以及可靠性。在各种不同的动态或“热交换”方案下,Kz技术的优势包括:

  • 最小化TDD系统中切换的Tx/Rx频率合成器阻抗牵引和恢复时间
  • 在功率放大器、驱动器和低噪声放大器等两个RF器件之间切换时,可避免产生有害和错误的瞬态
  • 在开关如3dB 耦合器(coupler)或者 4通道功分器等分布式网络的一个路径时,能够使未切换路径瞬态幅度和相位误差最小化

IDT公司射频事业部总经理Chris Stephens 介绍说:“对于最新的SPDT开关产品,我们要强调能够大幅改善开关在线切换性能的新KZ技术。F2923的推出再次证明IDT公司在系统设计专家所期望的核心RF技术创新方面的领导地位。”

除了KZ技术,该器件还可提供下述性能:

  • 在2GHz下,插入损耗仅为0.48dB
  • IIP3大于66dBm @ 2GHz
  • 在2GHz下,业界领先的74 dB隔离度

IDT公司创新的Kz技术覆盖从300kHz至8000MHz的宽频率范围,在从一个RF端口切换到另一个时能够确保器件具有近乎恒定的阻抗(VSWR <1.4:1,其他标准开关相比之下为9:1),同时不影响隔离度、线性度或插入损耗。F2923采用3.3V单电源正电压供电,支持标准的1.8V和3.3V控制逻辑电平。

供货信息

F2923开关目前可提供样片,以4×4mm 20-TQFN封装供货。

About IDT RF Products

IDT offers high-performance and full-featured radio frequency (RF) products that deliver exceptional performance in compact packages. All IDT RF signal path devices are silicon based, offering inherent advantages over GaAs-based products. The portfolio includes RF mixers, RF and IF variable gain amplifiers (VGA), digital step attenuators (DSA), demodulators, broadband modulators, RF switches, and wideband voltage variable attenuators. IDT’s RF devices are ideal for use in such products as cellular 4G base stations, broadband repeaters, distributed antenna systems and microwave backhaul equipment.

About IDT

Integrated Device Technology, Inc., develops system-level solutions that optimize its customers’ applications. IDT uses its market leadership in timing, serial switching and interfaces, and adds analog and system expertise to provide complete application-optimized, mixed-signal solutions for the communications, computing and consumer segments. Headquartered in San Jose, Calif., IDT has design, manufacturing, sales facilities and distribution partners throughout the world. IDT stock is traded on the NASDAQ Global Select Stock Market® under the symbol “IDTI.” Additional information about IDT is accessible at www.IDT.com. Follow IDT on FacebookLinkedIn,TwitterYouTube  and Google+.

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Contact details for publication: 
IDT Europe Limited
Phone: +44 (0) 1372 363339
Email: idteurope@idt.com 
Website: www.idt.com

Contact details for editorial enquiries:

Dean Solov
IDT Public Relations Manager
Phone: (408) 284-2608
E-mail: Dean.Solov@idt.com

Issued by: 
Simon Krelle, Pinnacle Marketing Communications Ltd
Tel: +44 (0) 20 8869 9339
Web: www.pinnacle-marketing.com
E-mail: s.krelle@pinnaclemarcom.com

 

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