Agilent English 2013-06-17 PDF 925 KB 5091-6188E c20140915 [9] free download

File name English _ 2013-06-17 _ PDF 925 KB 5091-6188E c20140915 [9].pdf

Keysight Technologies 87300B,C,D and 87301B,C,D,E Directional Couplers 87310B Hybrid Coupler Technical Overview Introduction The Keysight Technologies, Inc. 87300 series of compact, broadband directional/sampling and hybrid couplers are well suited for signal monitoring or, when combined with a coaxial detector, signal level- ing. See page 2 for the wide range of product offerings. Product Applications These compact, broadband directional couplers are important components for many microwave measurement systems. Although most modern signal generators and sweepers supply signals whose power levels are stable with respect to frequency, variations in signal level are introduced due to the cable losses (which increase with frequency) and the frequency response of other components in the signal path. Inserting a directional coupler into the system with a suitable microwave detector to sup- ply feedback to the ALC circuit of a signal generator or sweeper provides a leveled signal at a particu- lar point in the system (Figure 8). Keysight 8474B,C,E detectors offer excellent broad-band frequency response and low SWR for this application. Other applications include power monitoring with an 848X series power sensor connected to the sampling port. Connect the sampled signal port to a microwave counter to monitor frequency or to a signal analyzer for frequency spectrum monitoring (Figure 9). (See Figures 8 and 9 on page 4.) Features and Description