Ex parte QUAN - Page 3




                 Appeal No. 96-2408                                                                                                                     
                 Application No. 08/246,538                                                                                                             



                                   said second conductive pattern further defining a                                                                    
                 ground plane region adjacent said transmit/receive port end of                                                                         
                 said element and underlying said microstripline conductors,                                                                            
                 said ground plane region transitioning to said second                                                                                  
                 conductive strip comprising said broadside coupled strip                                                                               
                 transmission line region; and                                                                                                          
                                   a circulator device integrated with said broadside                                                                   
                 coupled strip transmission line region such that the                                                                                   
                 circulator device is mounted on said dielectric board and                                                                              
                 includes a terminal connected to one of said conductive strips                                                                         
                 comprising said broadside coupled strip transmission line                                                                              
                 region, said circulator device connecting said broadside                                                                               
                 coupled strip transmission line region to said first                                                                                   
                 microstripline conductor without a balun, and connecting said                                                                          
                 broadside coupled strip transmission line region to said                                                                               
                 second microstripline conductor without a balun, said                                                                                  
                 circulator device electrically isolating said first                                                                                    
                 microstripline conductor from said second microstripline                                                                               
                 conductor at microwave frequencies, said circulator device                                                                             
                 including a first terminal connected to said first                                                                                     
                 microstripline conductor, a second terminal connected to said                                                                          
                 first conductive strip comprising said broadside coupled strip                                                                         
                 transmission line region, and a third terminal connected to                                                                            
                 said second microstripline conductor.2                                                                                                 

                          The examiner relies on the following references:                                                                              
                 Nester                                       4,500,887                                             Feb. 19,                            
                 1985                                                                                                                                   
                 Fassett                                      4,509,055                                             Apr.  2,                            
                 1985                                                                                                                                   
                 Sharma                                       4,782,346                                             Nov.  1,                            
                 1988                                                                                                                                   

                          2This claim is as presented in the amendment after final                                                                      
                 (Amendment D) filed August 7, 1995 (Paper No. 11) which was                                                                            
                 indicated by the examiner in the answer as being entered.                                                                              
                                                                           3                                                                            





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