Agilent 11691D/11692D Directional Couplers 2 to 18 GHz Product Overview Broadband 20 dB directional couplers Models 11691D and 11692D high directivity couplers are precision instruments designed for broadband swept reflectometer applications in the 2 to 18 GHz frequency range. With their wide frequency coverage, one of these couplers can replace several couplers without performance degradation, thus adding convenience and economy to swept reflection and transmission coaxial microwave measurements by reducing setup and calibration time. In addition, the broad frequency coverage of the 11691D directional coupler makes it ideal for leveling applications of broadband sources. Its high directivity makes it possible to achieve excellent source matches not achievable with directional detectors. Specifications Simultaneous reflection and transmission measurement These couplers are ideal in reflectometry measurements. The reflection and transmission characteristics of a device can be measured conveniently from 2 to 18 GHz. Figure 1 shows a test configuration in which an 11692D dual coupler and an 11691D single coupler are used to separate and isolate the incident, reflected, and transmitted signals in a sweptfrequency measurement of reflection and transmission. These signals are detected and their ratio displayed on a CRT. The 11691D single coupler compensates in the transmitted signal for the coupling variations "seen" by the reference detector. The compensated ratio (Etran/Eref), being virtually flat, permits highresolution transmission measurements. These couplers are ideal companions for the 8755 frequency response test set, a 0.1 to 18 GHz detection and display system. Figure 1. Setup for simultaneous swept measurement of insertion loss (A/R) and return loss (B/R), using 11691D and 11692D couplers. 2 Frequency range Minimum directivity Maximum primary line SWR Maximum auxiliary port(s) SWR Nominal coupling (dB) Maximum coupling variation with frequency (dB) Tracking auxiliary arms Maximum primary line residual loss Primary line power Handling capability Net weight Dimensions 11691D 2 to 18 GHz 2 to 8 GHz: 30 dB 11692D 2 to 18 GHz 2 to18 GHz: 30 dB 8 to 18 GHz: 26 dB1 2 to 12.4 GHz: 1.3 12.4 to 18 GHz: 1.40 1.3 20 1 dB * < 2 dB 50 average 250 peak 1.93 kg (4 1b, 4 oz) 404.8 mm (15-15/16 in) L 133.4 mm (5-1/4 in) H 42.9 mm (1-11/16 in)W 8 to 18 GHz: 26 dB1 2 to 12.4 GHz: 1.3 12.4 to 18 GHz: 1.40 1.3 20 l dB2 0.7 dB3* < 1.5 dB 50 average 250 peak 2.72 kg (6 1b, 0 oz) 404.8 mm (15-15/16 in) L 133.4 mm (5-1/4 in) H 42.9 mm (1 -11/16 in)W 11691D connector Option Primary line Input/output Auxiliary arms Standard APC-7/APC-7 N(f) 11692D connector options Option Primary line Input/output Auxiliary arms Incident/reflection 11692D-005 11692D-001 11692D-002 11692D-003 11692D-004 N(f)/APC-7 N(f)/N(f) N(f)/N(m) N(f)/APC-7 APC-7/APC-7 N(f)/N(f) N(f)/N(f) N(f)/N(f) APC-7/APC-7 APC-7/APC-7 Figure 2. Directivity specifications. Connectors The APC-7 and type-N connectors are stainless steel designed for durability. The type-N connectors conform to MIL-C-39012 or MIL-C-71. Figure 3. Typical coupling curve. 1. 24 dB with type-N connector on the INPUT PORT (11691D) or TEST PORT (11692D). 2. Incident to test port. 3. With the test port shorted and not including source match ripple. * Typical tracking between 11691D and 11692D is 0.07 dB. 3 Agilent Technologies' Test and Measurement Support, Services, and Assistance Agilent Technologies aims to maximize the value you receive, while minimizing your risk and problems. We strive to ensure that you get the test and measurement capabilities you paid for and obtain the support you need. Our extensive support resources and services can help you choose the right Agilent products for your applications and apply them successfully. Every instrument and system we sell has a global warranty. 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Agilent T&M Software and Connectivity Agilent's Test and Measurement software and connectivity products, solutions and developer network allows you to take time out of connecting your instruments to your computer with tools based on PC standards, so you can focus on your tasks, not on your connections. Visit www.agilent.com/find/connectivity for more information. Phone or Fax United States: (tel) 800 452 4844 Canada: (tel) 877 894 4414 (fax) 905 282 6495 China: (tel) 800 810 0189 (fax) 800 820 2816 Japan: (tel) (81) 426 56 7832 (fax) (81) 426 56 7840 Korea: (tel) (82 2) 2004 5004 (fax) (82 2) 2004 5115 Latin America: (tel) (305) 269 7500 (fax) (305) 269 7599 Taiwan: (tel) 0800 047 866 (fax) 0800 286 331 Other Asia Pacific Countries: (tel) (65) 6375 8100 (fax) (65) 6836 0252 Email: tm_asia@agilent.com Online Assistance: ww.agilent.com/find/assist Product specifications and descriptions in this document subject to change without notice. (c) Agilent Technologies, Inc. 2001, 2002 Printed in USA, September 18, 2002 5952-1145