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| QHD-2N-0.45G QUAD HYBRID PRELIMINARY REV: 009, 11/17/04 TECHNICAL DESCRIPTION FEATURES * 350 - 520 MHz * LOW LOSS * HIGH ISOLATION * EXCELLENT PHASE/AMPLITUDE BALANCE * HIGH POWER HANDLING * SURFACE MOUNT APPLICATIONS * CDMA 450 BASE STATION POWER AMPLIFIERS * UHF LAND MOBILE RADIO BASE STATION POWER AMPLIFIERS * UHF RADAR (400-500 MHz) The QHD-2N-0.45G series is a member of the Multi-Mix QHD family of 3-dB 90 couplers for use in the 350-520 MHz range. The QHD-2N-0.45G exhibits low insertion loss, low VSWR, and high isolation. Excellent phase and amplitude balance and high RF power handling capability make this series ideal for use in base station power amplifiers in particular and radio transceivers, receiver/antenna multicouplers and RF signal distribution and processing equipment in general. The construction of QHD quad hybrids is based on fusion bonded multiplayer stripline structures. The fusion bonding process yields homogeneous monolithic dielectric structures with reliability, ruggedness, and electrical and thermal performance that are superior to conventional adhesive bonding techniques. GENERAL SPECIFICATIONS FREQUENCY RANGE (MHz) 350 - 380 380- 520 PHASE BALANCE (MAX) 90 3 INPUT POWER (CW, MAX) 125 W ISOLATION (dB MIN) 18 20 SIZE (INCHES) 0.65 x 0.48 x 0.155 INSERTION LOSS (dB MAX) VSWR (MAX) 1.25:1 1.20:1 RF INTERFACE Surface Mount AMPLITUDE BALANCE (dB MAX) 0.4 0.3 OPERATING TEMPERATURE -55 - +85 C 0.3 WEIGHT (GRAMS/OZ.) 2.10 / .074 PACKAGE OUTLINE PORT 1 0.650 0.050 TYP. PORT 2 0.050 TYP. PORT 4 R. 0.0 52 0.024 TYP. QHD-2N-0.45G PORT 3 4X THE MULTI-MIX MICROTECHNOLOGY(R) GROUP IS ISO 9001:2000 REGISTERED U.S. Patent 6,099,677 and other Patents Pending. Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006 Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: MMFM@merrimacind.com / www.Multi-Mix.com 0.480 0.155 TYPICAL PERFORMANCE QHD-2N-0.45G Coupling Coupled -2 -2.25 -2.5 Magnitude (dB) Magnitude (dB) -2.75 -3 -3.25 -3.5 -3.75 -4 -4.25 -4.5 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 Frequency (MHz) -35 -40 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 Frequency (MHz) Isolation Direct 0 -5 -10 -15 -20 -25 -30 VSWR Port 1 1.5 Port 2 Port 3 Port 4 -85 -86 1.4 Phase (Degrees) -87 -88 -89 -90 -91 -92 -93 -94 1 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 Frequency (MHz) Phase Balance VSWR 1.3 1.2 1.1 -95 350 360 370 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 Frequency (MHz) MOUNTING CONFIGURATION GROUND PLANE OF UNIT SHOULD BE SOLDERED TO GROUND PLANE OF CIRCUIT BOARD FOR OPTIMUM PERFORMANCE. 0.537 [13.64] GROUND PLANE S VIA H UND OUG GROD THR TE PLA 0.063 [1.60] 0.380 [9.65] 0.068 [1.73] 50 OHM LINE .032 DIELECTRIC THICKNESS ER = 3.38 TRUTH TABLE 1 1 2 3 4 Input Iso -90 0 2 Iso Input 0 -90 3 -90 0 Input Iso 0.034 TYP. [0.86] 0.050 [1.27] 4 0 -90 Iso Input Merrimac Industries / 41 Fairfield Place, West Caldwell, NJ 07006 Tel: 1.888.434.MMFM / Fax: 973.882.5990 / Email: MMFM@merrimacind.com / www.Multi-Mix.com |
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